repos/blastem: blastem.c annotate

annotate blastem.c @ 604:39d7d463ed5b

Get Z80 banked access sort of working again

author	Michael Pavone <pavone@retrodev.com>
date	Fri, 26 Dec 2014 19:37:59 -0800
parents	452ad0b42afa
children	cf73b72c6d1e

rev	line source
467 140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 464 diff changeset	1 /*
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 464 diff changeset	2 Copyright 2013 Michael Pavone
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	3 This file is part of BlastEm.
467 140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 464 diff changeset	4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 464 diff changeset	5 */
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	6 #include "68kinst.h"
569 9b7fcf748be0 Rename x86_68k_options and m68k_to_x86.h to m68k_options and m68k_core.h respectively Michael Pavone <pavone@retrodev.com> parents: 565 diff changeset	7 #include "m68k_core.h"
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	8 #include "z80_to_x86.h"
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	9 #include "mem.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	10 #include "vdp.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	11 #include "render.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	12 #include "blastem.h"
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	13 #include "gdb_remote.h"
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	14 #include "gst.h"
496 6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere Mike Pavone <pavone@retrodev.com> parents: 488 diff changeset	15 #include "util.h"
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	16 #include <stdio.h>
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	17 #include <stdlib.h>
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	18 #include <string.h>
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	19
531 46a60bb5f785 Update version number Mike Pavone <pavone@retrodev.com> parents: 529 diff changeset	20 #define BLASTEM_VERSION "0.2.0"
464 226ed16b1fb6 Added version flag Mike Pavone <pavone@retrodev.com> parents: 463 diff changeset	21
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	22 #define MCLKS_NTSC 53693175
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	23 #define MCLKS_PAL 53203395
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	24
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	25 #define MCLKS_PER_68K 7
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	26 #define MCLKS_PER_YM MCLKS_PER_68K
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	27 #define MCLKS_PER_Z80 15
354 15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	28 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	29
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	30 //TODO: Figure out the exact value for this
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	31 #define LINES_NTSC 262
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	32 #define LINES_PAL 312
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	33
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	34 #define MAX_SOUND_CYCLES 100000
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	35
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	36 uint32_t mclks_per_frame = MCLKS_LINE*LINES_NTSC;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	37
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	38 uint16_t cart[CARTRIDGE_WORDS];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	39 uint16_t ram[RAM_WORDS];
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	40 uint8_t z80_ram[Z80_RAM_BYTES];
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	41
215 2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	42 int headless = 0;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	43 int exit_after = 0;
265 c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	44 int z80_enabled = 1;
356 79e4b466e7d0 Get rid of debug puts and limit based on audio rather than frame rate by default. Mike Pavone <pavone@retrodev.com> parents: 354 diff changeset	45 int frame_limit = 0;
215 2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	46
430 7f84090ab1cd Add config file parser and default config file Mike Pavone <pavone@retrodev.com> parents: 425 diff changeset	47 tern_node * config;
7f84090ab1cd Add config file parser and default config file Mike Pavone <pavone@retrodev.com> parents: 425 diff changeset	48
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	49 #ifndef MIN
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	50 #define MIN(a,b) ((a) < (b) ? (a) : (b))
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	51 #endif
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	52
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	53 #define SMD_HEADER_SIZE 512
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	54 #define SMD_MAGIC1 0x03
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	55 #define SMD_MAGIC2 0xAA
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	56 #define SMD_MAGIC3 0xBB
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	57 #define SMD_BLOCK_SIZE 0x4000
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	58
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	59 int load_smd_rom(long filesize, FILE * f)
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	60 {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	61 uint8_t block[SMD_BLOCK_SIZE];
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	62 filesize -= SMD_HEADER_SIZE;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	63 fseek(f, SMD_HEADER_SIZE, SEEK_SET);
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	64
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	65 uint16_t * dst = cart;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	66 while (filesize > 0) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	67 fread(block, 1, SMD_BLOCK_SIZE, f);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	68 for (uint8_t low = block, high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	69 (dst++) = high << 8 \| *low;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	70 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	71 filesize -= SMD_BLOCK_SIZE;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	72 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	73 return 1;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	74 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	75
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	76 int load_rom(char * filename)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	77 {
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	78 uint8_t header[10];
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	79 FILE * f = fopen(filename, "rb");
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	80 if (!f) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	81 return 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	82 }
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	83 fread(header, 1, sizeof(header), f);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	84 fseek(f, 0, SEEK_END);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	85 long filesize = ftell(f);
158 a2ab895d9708 Fix predec address mode when used as source Mike Pavone <pavone@retrodev.com> parents: 153 diff changeset	86 if (filesize/2 > CARTRIDGE_WORDS) {
a2ab895d9708 Fix predec address mode when used as source Mike Pavone <pavone@retrodev.com> parents: 153 diff changeset	87 //carts bigger than 4MB not currently supported
a2ab895d9708 Fix predec address mode when used as source Mike Pavone <pavone@retrodev.com> parents: 153 diff changeset	88 filesize = CARTRIDGE_WORDS*2;
a2ab895d9708 Fix predec address mode when used as source Mike Pavone <pavone@retrodev.com> parents: 153 diff changeset	89 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	90 fseek(f, 0, SEEK_SET);
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	91 if (header[1] == SMD_MAGIC1 && header[8] == SMD_MAGIC2 && header[9] == SMD_MAGIC3) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	92 int i;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	93 for (i = 3; i < 8; i++) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	94 if (header[i] != 0) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	95 break;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	96 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	97 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	98 if (i == 8) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	99 if (header[2]) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	100 fprintf(stderr, "%s is a split SMD ROM which is not currently supported", filename);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	101 exit(1);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	102 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	103 return load_smd_rom(filesize, f);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	104 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	105 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	106 fread(cart, 2, filesize/2, f);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	107 fclose(f);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	108 for(unsigned short * cur = cart; cur - cart < (filesize/2); ++cur)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	109 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	110 cur = (cur >> 8) \| (*cur << 8);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	111 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	112 //TODO: Mirror ROM
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	113 return 1;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	114 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	115
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	116 uint16_t read_dma_value(uint32_t address)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	117 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	118 //addresses here are word addresses (i.e. bit 0 corresponds to A1), so no need to do div by 2
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	119 if (address < 0x200000) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	120 return cart[address];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	121 } else if(address >= 0x700000) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	122 return ram[address & 0x7FFF];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	123 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	124 //TODO: Figure out what happens when you try to DMA from weird adresses like IO or banked Z80 area
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	125 return 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	126 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	127
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	128 //TODO: Make these dependent on the video mode
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	129 //#define VINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_68K)
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	130 #define ZVINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_Z80)
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	131 //#define VINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_68K)
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	132 //#define ZVINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_Z80)
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	133
186 02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	134 void adjust_int_cycle(m68k_context * context, vdp_context * v_context)
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	135 {
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	136 context->int_cycle = CYCLE_NEVER;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	137 if ((context->status & 0x7) < 6) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	138 uint32_t next_vint = vdp_next_vint(v_context);
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	139 if (next_vint != CYCLE_NEVER) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	140 next_vint /= MCLKS_PER_68K;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	141 context->int_cycle = next_vint;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	142 context->int_num = 6;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	143 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	144 if ((context->status & 0x7) < 4) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	145 uint32_t next_hint = vdp_next_hint(v_context);
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	146 if (next_hint != CYCLE_NEVER) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	147 next_hint /= MCLKS_PER_68K;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	148 if (next_hint < context->int_cycle) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	149 context->int_cycle = next_hint;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	150 context->int_num = 4;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	151
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	152 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	153 }
186 02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	154 }
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	155 }
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	156
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	157 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	158 /*printf("Cyc: %d, Trgt: %d, Int Cyc: %d, Int: %d, Mask: %X, V: %d, H: %d, HICount: %d, HReg: %d, Line: %d\n",
32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	159 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7),
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	160 v_context->regs[REG_MODE_2] & 0x20, v_context->regs[REG_MODE_1] & 0x10, v_context->hint_counter, v_context->regs[REG_HINT], v_context->cycles / MCLKS_LINE);*/
186 02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	161 }
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	162
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	163 int break_on_sync = 0;
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	164 int save_state = 0;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	165
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	166 uint8_t reset = 1;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	167 uint8_t need_reset = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	168 uint8_t busreq = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	169 uint8_t busack = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	170 uint32_t busack_cycle = CYCLE_NEVER;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	171 uint8_t new_busack = 0;
280 9ee64039ddeb Fix bank register update Mike Pavone <pavone@retrodev.com> parents: 279 diff changeset	172 //#define DO_DEBUG_PRINT
268 6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	173 #ifdef DO_DEBUG_PRINT
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	174 #define dprintf printf
271 969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros Mike Pavone <pavone@retrodev.com> parents: 268 diff changeset	175 #define dputs puts
268 6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	176 #else
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	177 #define dprintf
271 969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros Mike Pavone <pavone@retrodev.com> parents: 268 diff changeset	178 #define dputs
268 6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	179 #endif
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	180
402 de2c085ce174 Assert z80 interrupt longer so that they are not missed when they should not be Mike Pavone <pavone@retrodev.com> parents: 398 diff changeset	181 #define Z80_VINT_DURATION 128
de2c085ce174 Assert z80 interrupt longer so that they are not missed when they should not be Mike Pavone <pavone@retrodev.com> parents: 398 diff changeset	182
268 6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	183 void sync_z80(z80_context * z_context, uint32_t mclks)
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	184 {
565 9324f721efa6 Add a separate flag/define for disabling the Z80 at compile time to ease refactoring Michael Pavone <pavone@retrodev.com> parents: 558 diff changeset	185 #ifndef NO_Z80
265 c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	186 if (z80_enabled && !reset && !busreq) {
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 327 diff changeset	187 genesis_context * gen = z_context->system;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	188 z_context->sync_cycle = mclks / MCLKS_PER_Z80;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	189 if (z_context->current_cycle < z_context->sync_cycle) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	190 if (need_reset) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	191 z80_reset(z_context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	192 need_reset = 0;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	193 }
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	194 uint32_t vint_cycle = vdp_next_vint_z80(gen->vdp) / MCLKS_PER_Z80;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	195 while (z_context->current_cycle < z_context->sync_cycle) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	196 if (z_context->iff1 && z_context->current_cycle < (vint_cycle + Z80_VINT_DURATION)) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	197 z_context->int_cycle = vint_cycle < z_context->int_enable_cycle ? z_context->int_enable_cycle : vint_cycle;
602 452ad0b42afa Set int_cycle to CYCLE_NEVER in sync_z80 so that the interrupt routine isn't taken inappropriately now that the kludge in handle_cycle_limit_int has been removed Michael Pavone <pavone@retrodev.com> parents: 593 diff changeset	198 } else {
452ad0b42afa Set int_cycle to CYCLE_NEVER in sync_z80 so that the interrupt routine isn't taken inappropriately now that the kludge in handle_cycle_limit_int has been removed Michael Pavone <pavone@retrodev.com> parents: 593 diff changeset	199 z_context->int_cycle = CYCLE_NEVER;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	200 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	201 z_context->target_cycle = z_context->sync_cycle < z_context->int_cycle ? z_context->sync_cycle : z_context->int_cycle;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	202 dprintf("Running Z80 from cycle %d to cycle %d. Native PC: %p\n", z_context->current_cycle, z_context->sync_cycle, z_context->native_pc);
593 5ef3fe516da9 Z80 core is sort of working again Michael Pavone <pavone@retrodev.com> parents: 592 diff changeset	203 z_context->run(z_context);
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	204 dprintf("Z80 ran to cycle %d\n", z_context->current_cycle);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	205 }
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	206 }
548 a3afee2271ce Initial work on the x86-32 target Michael Pavone <pavone@retrodev.com> parents: 534 diff changeset	207 } else
a3afee2271ce Initial work on the x86-32 target Michael Pavone <pavone@retrodev.com> parents: 534 diff changeset	208 #endif
a3afee2271ce Initial work on the x86-32 target Michael Pavone <pavone@retrodev.com> parents: 534 diff changeset	209 {
289 1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	210 z_context->current_cycle = mclks / MCLKS_PER_Z80;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	211 }
268 6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	212 }
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	213
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	214 void sync_sound(genesis_context * gen, uint32_t target)
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	215 {
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	216 //printf("YM \| Cycle: %d, bpos: %d, PSG \| Cycle: %d, bpos: %d\n", gen->ym->current_cycle, gen->ym->buffer_pos, gen->psg->cycles, gen->psg->buffer_pos * 2);
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	217 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) {
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	218 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES;
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	219 //printf("Running PSG to cycle %d\n", cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	220 psg_run(gen->psg, cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	221 //printf("Running YM-2612 to cycle %d\n", cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	222 ym_run(gen->ym, cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	223 }
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	224 psg_run(gen->psg, target);
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	225 ym_run(gen->ym, target);
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	226
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	227 //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2);
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	228 }
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	229
321 146c87616b05 Don't update interrupt mask on non-interrupt exceptions Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	230 uint32_t frame=0;
268 6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	231 m68k_context * sync_components(m68k_context * context, uint32_t address)
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	232 {
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	233 //TODO: Handle sync targets smaller than a single frame
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	234 genesis_context * gen = context->system;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	235 vdp_context * v_context = gen->vdp;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	236 z80_context * z_context = gen->z80;
268 6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	237 uint32_t mclks = context->current_cycle * MCLKS_PER_68K;
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset Mike Pavone <pavone@retrodev.com> parents: 266 diff changeset	238 sync_z80(z_context, mclks);
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	239 if (mclks >= mclks_per_frame) {
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	240 sync_sound(gen, mclks);
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	241 gen->ym->current_cycle -= mclks_per_frame;
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	242 gen->psg->cycles -= mclks_per_frame;
374 d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 372 diff changeset	243 if (gen->ym->write_cycle != CYCLE_NEVER) {
d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 372 diff changeset	244 gen->ym->write_cycle = gen->ym->write_cycle >= mclks_per_frame/MCLKS_PER_68K ? gen->ym->write_cycle - mclks_per_frame/MCLKS_PER_68K : 0;
d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 372 diff changeset	245 }
453 b491df8bdbc0 Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements. Mike Pavone <pavone@retrodev.com> parents: 452 diff changeset	246 //printf("reached frame end \| 68K Cycles: %d, MCLK Cycles: %d\n", context->current_cycle, mclks);
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	247 vdp_run_context(v_context, mclks_per_frame);
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	248
215 2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	249 if (!headless) {
338 5c34a9c39394 Re-enable frame limit, but add a command line flag to disable it Mike Pavone <pavone@retrodev.com> parents: 336 diff changeset	250 break_on_sync \|= wait_render_frame(v_context, frame_limit);
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	251 } else if(exit_after){
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	252 --exit_after;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	253 if (!exit_after) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	254 exit(0);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	255 }
215 2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	256 }
321 146c87616b05 Don't update interrupt mask on non-interrupt exceptions Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	257 frame++;
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	258 mclks -= mclks_per_frame;
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	259 vdp_adjust_cycles(v_context, mclks_per_frame);
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	260 io_adjust_cycles(gen->ports, context->current_cycle, mclks_per_frame/MCLKS_PER_68K);
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	261 io_adjust_cycles(gen->ports+1, context->current_cycle, mclks_per_frame/MCLKS_PER_68K);
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	262 io_adjust_cycles(gen->ports+2, context->current_cycle, mclks_per_frame/MCLKS_PER_68K);
344 b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	263 if (busack_cycle != CYCLE_NEVER) {
b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	264 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) {
b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	265 busack_cycle -= mclks_per_frame/MCLKS_PER_68K;
b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	266 } else {
b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	267 busack_cycle = CYCLE_NEVER;
b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	268 busack = new_busack;
b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	269 }
b46771135442 Handle busack across frame boundary Mike Pavone <pavone@retrodev.com> parents: 343 diff changeset	270 }
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	271 context->current_cycle -= mclks_per_frame/MCLKS_PER_68K;
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	272 if (z_context->current_cycle >= mclks_per_frame/MCLKS_PER_Z80) {
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	273 z_context->current_cycle -= mclks_per_frame/MCLKS_PER_Z80;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	274 } else {
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	275 z_context->current_cycle = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	276 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	277 if (mclks) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	278 vdp_run_context(v_context, mclks);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	279 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	280 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	281 //printf("running VDP for %d cycles\n", mclks - v_context->cycles);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	282 vdp_run_context(v_context, mclks);
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	283 sync_sound(gen, mclks);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	284 }
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	285 if (context->int_ack) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	286 vdp_int_ack(v_context, context->int_ack);
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	287 context->int_ack = 0;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 290 diff changeset	288 }
186 02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	289 adjust_int_cycle(context, v_context);
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	290 if (address) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	291 if (break_on_sync) {
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	292 break_on_sync = 0;
209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	293 debugger(context, address);
209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	294 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	295 if (save_state) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	296 save_state = 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	297 while (!z_context->pc)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	298 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	299 sync_z80(z_context, z_context->current_cycle * MCLKS_PER_Z80 + MCLKS_PER_Z80);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	300 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	301 save_gst(gen, "savestate.gst", address);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	302 }
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	303 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	304 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	305 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	306
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	307 m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	308 {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	309 if (vdp_port & 0x2700E0) {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	310 printf("machine freeze due to write to address %X\n", 0xC00000 \| vdp_port);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	311 exit(1);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	312 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	313 vdp_port &= 0x1F;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	314 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle);
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	315 sync_components(context, 0);
263 2989ed7b8608 Add a second context pointer to m68k_context so that try_fifo_write can still have easy access to the VDP. Handle writes to Z80 code addresses from the 68K. Mike Pavone <pavone@retrodev.com> parents: 260 diff changeset	316 vdp_context * v_context = context->video_context;
508 b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	317 genesis_context * gen = context->system;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	318 if (vdp_port < 0x10) {
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	319 int blocked;
345 29d2ca563499 Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall. Mike Pavone <pavone@retrodev.com> parents: 344 diff changeset	320 uint32_t before_cycle = v_context->cycles;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	321 if (vdp_port < 4) {
508 b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	322 gen->bus_busy = 1;
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	323 while (vdp_data_port_write(v_context, value) < 0) {
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	324 while(v_context->flags & FLAG_DMA_RUN) {
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	325 vdp_run_dma_done(v_context, mclks_per_frame);
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	326 if (v_context->cycles >= mclks_per_frame) {
534 c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	327 context->current_cycle = v_context->cycles / MCLKS_PER_68K;
c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	328 if (context->current_cycle * MCLKS_PER_68K < mclks_per_frame) {
c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	329 ++context->current_cycle;
215 2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	330 }
534 c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	331 sync_components(context, 0);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	332 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	333 }
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	334 //context->current_cycle = v_context->cycles / MCLKS_PER_68K;
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	335 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	336 } else if(vdp_port < 8) {
508 b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	337 gen->bus_busy = 1;
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	338 blocked = vdp_control_port_write(v_context, value);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	339 if (blocked) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	340 while (blocked) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	341 while(v_context->flags & FLAG_DMA_RUN) {
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	342 vdp_run_dma_done(v_context, mclks_per_frame);
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	343 if (v_context->cycles >= mclks_per_frame) {
534 c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	344 context->current_cycle = v_context->cycles / MCLKS_PER_68K;
c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	345 if (context->current_cycle * MCLKS_PER_68K < mclks_per_frame) {
c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	346 ++context->current_cycle;
215 2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	347 }
534 c641006da28e Properly sync hardware when frame end is reached during DMA Mike Pavone <pavone@retrodev.com> parents: 531 diff changeset	348 sync_components(context, 0);
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	349 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	350 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	351 if (blocked < 0) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	352 blocked = vdp_control_port_write(v_context, value);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	353 } else {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	354 blocked = 0;
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	355 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	356 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	357 } else {
186 02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write Mike Pavone <pavone@retrodev.com> parents: 185 diff changeset	358 adjust_int_cycle(context, v_context);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	359 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	360 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	361 printf("Illegal write to HV Counter port %X\n", vdp_port);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	362 exit(1);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	363 }
345 29d2ca563499 Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall. Mike Pavone <pavone@retrodev.com> parents: 344 diff changeset	364 if (v_context->cycles != before_cycle) {
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	365 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for write\n", v_context->cycles / MCLKS_PER_68K - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle);
345 29d2ca563499 Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall. Mike Pavone <pavone@retrodev.com> parents: 344 diff changeset	366 context->current_cycle = v_context->cycles / MCLKS_PER_68K;
29d2ca563499 Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall. Mike Pavone <pavone@retrodev.com> parents: 344 diff changeset	367 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	368 } else if (vdp_port < 0x18) {
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	369 sync_sound(gen, context->current_cycle * MCLKS_PER_68K);
354 15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	370 psg_write(gen->psg, value);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	371 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	372 //TODO: Implement undocumented test register(s)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	373 }
508 b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	374 if (gen->bus_busy)
b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	375 {
b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	376 //Lock the Z80 out of the bus until the VDP access is complete
b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	377 sync_z80(gen->z80, v_context->cycles);
b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	378 gen->bus_busy = 0;
b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff. Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	379 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	380 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	381 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	382
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	383 m68k_context * vdp_port_write_b(uint32_t vdp_port, m68k_context * context, uint8_t value)
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	384 {
357 fa7ea48be9a9 Allow VDP/PSG writes from Z80 Mike Pavone <pavone@retrodev.com> parents: 356 diff changeset	385 return vdp_port_write(vdp_port, context, vdp_port < 0x10 ? value \| value << 8 : ((vdp_port & 1) ? value : 0));
fa7ea48be9a9 Allow VDP/PSG writes from Z80 Mike Pavone <pavone@retrodev.com> parents: 356 diff changeset	386 }
fa7ea48be9a9 Allow VDP/PSG writes from Z80 Mike Pavone <pavone@retrodev.com> parents: 356 diff changeset	387
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	388 void * z80_vdp_port_write(uint32_t vdp_port, void * vcontext, uint8_t value)
357 fa7ea48be9a9 Allow VDP/PSG writes from Z80 Mike Pavone <pavone@retrodev.com> parents: 356 diff changeset	389 {
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	390 z80_context * context = vcontext;
357 fa7ea48be9a9 Allow VDP/PSG writes from Z80 Mike Pavone <pavone@retrodev.com> parents: 356 diff changeset	391 genesis_context * gen = context->system;
358 9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	392 if (vdp_port & 0xE0) {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	393 printf("machine freeze due to write to Z80 address %X\n", 0x7F00 \| vdp_port);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	394 exit(1);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	395 }
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	396 if (vdp_port < 0x10) {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	397 //These probably won't currently interact well with the 68K accessing the VDP
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	398 vdp_run_context(gen->vdp, context->current_cycle * MCLKS_PER_Z80);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	399 if (vdp_port < 4) {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	400 vdp_data_port_write(gen->vdp, value << 8 \| value);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	401 } else if (vdp_port < 8) {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	402 vdp_control_port_write(gen->vdp, value << 8 \| value);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	403 } else {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	404 printf("Illegal write to HV Counter port %X\n", vdp_port);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	405 exit(1);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	406 }
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	407 } else if (vdp_port < 0x18) {
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	408 sync_sound(gen, context->current_cycle * MCLKS_PER_Z80);
358 9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	409 psg_write(gen->psg, value);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	410 } else {
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	411 vdp_test_port_write(gen->vdp, value);
358 9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator Mike Pavone <pavone@retrodev.com> parents: 357 diff changeset	412 }
357 fa7ea48be9a9 Allow VDP/PSG writes from Z80 Mike Pavone <pavone@retrodev.com> parents: 356 diff changeset	413 return context;
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	414 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	415
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	416 uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context)
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	417 {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	418 if (vdp_port & 0x2700E0) {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	419 printf("machine freeze due to read from address %X\n", 0xC00000 \| vdp_port);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	420 exit(1);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	421 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	422 vdp_port &= 0x1F;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	423 uint16_t value;
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	424 sync_components(context, 0);
263 2989ed7b8608 Add a second context pointer to m68k_context so that try_fifo_write can still have easy access to the VDP. Handle writes to Z80 code addresses from the 68K. Mike Pavone <pavone@retrodev.com> parents: 260 diff changeset	425 vdp_context * v_context = context->video_context;
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	426 uint32_t before_cycle = v_context->cycles;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	427 if (vdp_port < 0x10) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	428 if (vdp_port < 4) {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	429 value = vdp_data_port_read(v_context);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	430 } else if(vdp_port < 8) {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	431 value = vdp_control_port_read(v_context);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	432 } else {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	433 value = vdp_hv_counter_read(v_context);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	434 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	435 }
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	436 } else if (vdp_port < 0x18){
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	437 printf("Illegal read from PSG port %X\n", vdp_port);
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	438 exit(1);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	439 } else {
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	440 value = vdp_test_port_read(v_context);
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	441 }
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	442 if (v_context->cycles != before_cycle) {
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	443 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for read\n", v_context->cycles / MCLKS_PER_68K - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle);
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 469 diff changeset	444 context->current_cycle = v_context->cycles / MCLKS_PER_68K;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	445 }
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	446 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	447 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	448
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	449 uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context)
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	450 {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	451 uint16_t value = vdp_port_read(vdp_port, context);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	452 if (vdp_port & 1) {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	453 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	454 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	455 return value >> 8;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	456 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	457 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	458
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	459 uint8_t z80_vdp_port_read(uint32_t vdp_port, void * vcontext)
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	460 {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	461 z80_context * context = vcontext;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	462 if (vdp_port & 0xE0) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	463 printf("machine freeze due to read from Z80 address %X\n", 0x7F00 \| vdp_port);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	464 exit(1);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	465 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	466 genesis_context * gen = context->system;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	467 vdp_port &= 0x1F;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	468 uint16_t ret;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	469 if (vdp_port < 0x10) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	470 //These probably won't currently interact well with the 68K accessing the VDP
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	471 vdp_run_context(gen->vdp, context->current_cycle * MCLKS_PER_Z80);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	472 if (vdp_port < 4) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	473 ret = vdp_data_port_read(gen->vdp);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	474 } else if (vdp_port < 8) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	475 ret = vdp_control_port_read(gen->vdp);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	476 } else {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	477 printf("Illegal write to HV Counter port %X\n", vdp_port);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	478 exit(1);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	479 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	480 } else {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	481 //TODO: Figure out the correct value today
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	482 ret = 0xFFFF;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	483 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	484 return vdp_port & 1 ? ret : ret >> 8;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	485 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	486
279 6be6056735a9 Fix native address lookup in bannked memory area Mike Pavone <pavone@retrodev.com> parents: 276 diff changeset	487 uint32_t zram_counter = 0;
289 1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	488 #define Z80_ACK_DELAY 3
336 87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	489 #define Z80_BUSY_DELAY 1//TODO: Find the actual value for this
289 1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	490 #define Z80_REQ_BUSY 1
1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	491 #define Z80_REQ_ACK 0
1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	492 #define Z80_RES_BUSACK reset
279 6be6056735a9 Fix native address lookup in bannked memory area Mike Pavone <pavone@retrodev.com> parents: 276 diff changeset	493
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	494 m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	495 {
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	496 genesis_context * gen = context->system;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	497 if (location < 0x10000) {
336 87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	498 if (busack_cycle <= context->current_cycle) {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	499 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	500 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	501 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	502 if (!(busack \|\| reset)) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	503 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	504 if (location < 0x4000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	505 z80_ram[location & 0x1FFF] = value;
565 9324f721efa6 Add a separate flag/define for disabling the Z80 at compile time to ease refactoring Michael Pavone <pavone@retrodev.com> parents: 558 diff changeset	506 #ifndef NO_Z80
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	507 z80_handle_code_write(location & 0x1FFF, gen->z80);
548 a3afee2271ce Initial work on the x86-32 target Michael Pavone <pavone@retrodev.com> parents: 534 diff changeset	508 #endif
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	509 } else if (location < 0x6000) {
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	510 sync_sound(gen, context->current_cycle * MCLKS_PER_68K);
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	511 if (location & 1) {
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	512 ym_data_write(gen->ym, value);
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	513 } else if(location & 2) {
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	514 ym_address_write_part2(gen->ym, value);
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	515 } else {
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	516 ym_address_write_part1(gen->ym, value);
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	517 }
405 042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	518 } else if (location == 0x6000) {
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	519 gen->z80->bank_reg = (gen->z80->bank_reg >> 1 \| value << 8) & 0x1FF;
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	520 if (gen->z80->bank_reg < 0x80) {
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	521 gen->z80->mem_pointers[1] = (gen->z80->bank_reg << 15) + ((char *)gen->z80->mem_pointers[2]);
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	522 } else {
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	523 gen->z80->mem_pointers[1] = NULL;
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	524 }
395 0b5f93358a93 Add debugger command for saving Z80 RAM to a file Mike Pavone <pavone@retrodev.com> parents: 392 diff changeset	525 } else {
0b5f93358a93 Add debugger command for saving Z80 RAM to a file Mike Pavone <pavone@retrodev.com> parents: 392 diff changeset	526 printf("68K write to unhandled Z80 address %X\n", location);
0b5f93358a93 Add debugger command for saving Z80 RAM to a file Mike Pavone <pavone@retrodev.com> parents: 392 diff changeset	527 exit(1);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	528 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	529 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	530 } else {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	531 location &= 0x1FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	532 if (location < 0x100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	533 switch(location/2)
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	534 {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	535 case 0x1:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	536 io_data_write(gen->ports, value, context->current_cycle);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	537 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	538 case 0x2:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	539 io_data_write(gen->ports+1, value, context->current_cycle);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	540 break;
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	541 case 0x3:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	542 io_data_write(gen->ports+2, value, context->current_cycle);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	543 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	544 case 0x4:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	545 gen->ports[0].control = value;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	546 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	547 case 0x5:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	548 gen->ports[1].control = value;
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	549 break;
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	550 case 0x6:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	551 gen->ports[2].control = value;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	552 break;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	553 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	554 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	555 if (location == 0x1100) {
336 87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	556 if (busack_cycle <= context->current_cycle) {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	557 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	558 busack_cycle = CYCLE_NEVER;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	559 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	560 if (value & 1) {
271 969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros Mike Pavone <pavone@retrodev.com> parents: 268 diff changeset	561 dputs("bus requesting Z80");
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	562
336 87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	563 if(!reset && !busreq) {
482 4b24260125f3 Theoretically more correct timing of Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 471 diff changeset	564 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K + Z80_ACK_DELAY*MCLKS_PER_Z80);
4b24260125f3 Theoretically more correct timing of Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 471 diff changeset	565 busack_cycle = (gen->z80->current_cycle * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY;
289 1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	566 new_busack = Z80_REQ_ACK;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	567 }
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	568 busreq = 1;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	569 } else {
482 4b24260125f3 Theoretically more correct timing of Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 471 diff changeset	570 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K);
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	571 if (busreq) {
271 969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros Mike Pavone <pavone@retrodev.com> parents: 268 diff changeset	572 dputs("releasing z80 bus");
280 9ee64039ddeb Fix bank register update Mike Pavone <pavone@retrodev.com> parents: 279 diff changeset	573 #ifdef DO_DEBUG_PRINT
279 6be6056735a9 Fix native address lookup in bannked memory area Mike Pavone <pavone@retrodev.com> parents: 276 diff changeset	574 char fname[20];
6be6056735a9 Fix native address lookup in bannked memory area Mike Pavone <pavone@retrodev.com> parents: 276 diff changeset	575 sprintf(fname, "zram-%d", zram_counter++);
6be6056735a9 Fix native address lookup in bannked memory area Mike Pavone <pavone@retrodev.com> parents: 276 diff changeset	576 FILE * f = fopen(fname, "wb");
6be6056735a9 Fix native address lookup in bannked memory area Mike Pavone <pavone@retrodev.com> parents: 276 diff changeset	577 fwrite(z80_ram, 1, sizeof(z80_ram), f);
6be6056735a9 Fix native address lookup in bannked memory area Mike Pavone <pavone@retrodev.com> parents: 276 diff changeset	578 fclose(f);
280 9ee64039ddeb Fix bank register update Mike Pavone <pavone@retrodev.com> parents: 279 diff changeset	579 #endif
336 87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	580 busack_cycle = ((gen->z80->current_cycle + Z80_BUSY_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;
87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	581 new_busack = Z80_REQ_BUSY;
87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	582 busreq = 0;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	583 }
289 1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	584 //busack_cycle = CYCLE_NEVER;
1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	585 //busack = Z80_REQ_BUSY;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	586
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	587 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	588 } else if (location == 0x1200) {
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	589 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	590 if (value & 1) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	591 if (reset && busreq) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	592 new_busack = 0;
289 1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	593 busack_cycle = ((gen->z80->current_cycle + Z80_ACK_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	594 }
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	595 //TODO: Deal with the scenario in which reset is not asserted long enough
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	596 if (reset) {
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	597 need_reset = 1;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	598 //TODO: Add necessary delay between release of reset and start of execution
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	599 gen->z80->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80 + 16;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	600 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	601 reset = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	602 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	603 reset = 1;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	604 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	605 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	606 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	607 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	608 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	609 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	610
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	611 m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	612 {
404 88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions Mike Pavone <pavone@retrodev.com> parents: 402 diff changeset	613 if (location < 0x10000 \|\| (location & 0x1FFF) >= 0x100) {
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions Mike Pavone <pavone@retrodev.com> parents: 402 diff changeset	614 return io_write(location, context, value >> 8);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	615 } else {
404 88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions Mike Pavone <pavone@retrodev.com> parents: 402 diff changeset	616 return io_write(location, context, value);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	617 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	618 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	619
130 0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	620 #define USA 0x80
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	621 #define JAP 0x00
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	622 #define EUR 0xC0
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	623 #define NO_DISK 0x20
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	624 uint8_t version_reg = NO_DISK \| USA;
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	625
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	626 uint8_t io_read(uint32_t location, m68k_context * context)
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	627 {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	628 uint8_t value;
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	629 genesis_context *gen = context->system;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	630 if (location < 0x10000) {
336 87b65e5ce1ab Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too Mike Pavone <pavone@retrodev.com> parents: 335 diff changeset	631 if (busack_cycle <= context->current_cycle) {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	632 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	633 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	634 }
289 1cc0850ab6bc Hopefully more correct implementation of the Z80 busack status Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	635 if (!(busack==Z80_REQ_BUSY \|\| reset)) {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	636 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	637 if (location < 0x4000) {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	638 value = z80_ram[location & 0x1FFF];
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	639 } else if (location < 0x6000) {
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	640 sync_sound(gen, context->current_cycle * MCLKS_PER_68K);
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	641 value = ym_read_status(gen->ym);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	642 } else {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	643 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	644 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	645 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	646 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	647 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	648 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	649 location &= 0x1FFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	650 if (location < 0x100) {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	651 switch(location/2)
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	652 {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	653 case 0x0:
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	654 //version bits should be 0 for now since we're not emulating TMSS
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	655 value = version_reg;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	656 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	657 case 0x1:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	658 value = io_data_read(gen->ports, context->current_cycle);
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	659 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	660 case 0x2:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	661 value = io_data_read(gen->ports+1, context->current_cycle);
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	662 break;
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	663 case 0x3:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	664 value = io_data_read(gen->ports+2, context->current_cycle);
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	665 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	666 case 0x4:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	667 value = gen->ports[0].control;
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	668 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	669 case 0x5:
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	670 value = gen->ports[1].control;
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	671 break;
421 d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	672 case 0x6:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring Mike Pavone <pavone@retrodev.com> parents: 418 diff changeset	673 value = gen->ports[2].control;
405 042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again Mike Pavone <pavone@retrodev.com> parents: 404 diff changeset	674 break;
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	675 default:
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	676 value = 0xFF;
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	677 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	678 } else {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	679 if (location == 0x1100) {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	680 if (busack_cycle <= context->current_cycle) {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	681 busack = new_busack;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	682 busack_cycle = CYCLE_NEVER;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	683 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	684 value = Z80_RES_BUSACK \|\| busack;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	685 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d, busack: %d, busack_cycle %d)\n", value, context->current_cycle, reset, busack, busack_cycle);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	686 } else if (location == 0x1200) {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	687 value = !reset;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	688 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	689 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	690 printf("Byte read of unknown IO location: %X\n", location);
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	691 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	692 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	693 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	694 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	695 }
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	696
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	697 uint16_t io_read_w(uint32_t location, m68k_context * context)
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	698 {
404 88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions Mike Pavone <pavone@retrodev.com> parents: 402 diff changeset	699 uint16_t value = io_read(location, context);
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions Mike Pavone <pavone@retrodev.com> parents: 402 diff changeset	700 if (location < 0x10000 \|\| (location & 0x1FFF) < 0x100) {
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions Mike Pavone <pavone@retrodev.com> parents: 402 diff changeset	701 value = value \| (value << 8);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	702 } else {
404 88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions Mike Pavone <pavone@retrodev.com> parents: 402 diff changeset	703 value <<= 8;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	704 }
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	705 return value;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	706 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	707
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	708 void * z80_write_ym(uint32_t location, void * vcontext, uint8_t value)
290 171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	709 {
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	710 z80_context * context = vcontext;
290 171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	711 genesis_context * gen = context->system;
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	712 sync_sound(gen, context->current_cycle * MCLKS_PER_Z80);
290 171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	713 if (location & 1) {
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	714 ym_data_write(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	715 } else if (location & 2) {
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	716 ym_address_write_part2(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	717 } else {
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	718 ym_address_write_part1(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	719 }
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	720 return context;
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	721 }
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	722
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	723 uint8_t z80_read_ym(uint32_t location, void * vcontext)
290 171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	724 {
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	725 z80_context * context = vcontext;
290 171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	726 genesis_context * gen = context->system;
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	727 sync_sound(gen, context->current_cycle * MCLKS_PER_Z80);
290 171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	728 return ym_read_status(gen->ym);
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	729 }
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	730
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	731 uint8_t z80_read_bank(uint32_t location, void * vcontext)
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	732 {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	733 z80_context * context = vcontext;
604 39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	734 uint32_t address = context->bank_reg << 15 \| location;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	735 fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area\n", address);
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	736 return 0;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	737 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	738
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	739 void z80_write_bank(uint32_t location, void vcontext, uint8_t value)
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	740 {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	741 z80_context * context = vcontext;
604 39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	742 uint32_t address = context->bank_reg << 15 \| location;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	743 if (address >= 0xE00000) {
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	744 address &= 0xFFFF;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	745 ((uint8_t *)ram)[address ^ 1] = value;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	746 } else {
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	747 fprintf(stderr, "Unhandled write by Z80 to address %X through banked memory area\n", address);
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	748 }
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	749 return context;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	750 }
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	751
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	752 void z80_write_bank_reg(uint32_t location, void vcontext, uint8_t value)
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	753 {
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	754 z80_context * context = vcontext;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	755
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	756 context->bank_reg = (context->bank_reg >> 1 \| value << 8) & 0x1FF;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	757 if (context->bank_reg < 0x80) {
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	758 context->mem_pointers[1] = context->mem_pointers[2] + (context->bank_reg << 15);
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	759 } else {
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	760 context->mem_pointers[1] = NULL;
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	761 }
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	762
592 4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	763 return context;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	764 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled Michael Pavone <pavone@retrodev.com> parents: 590 diff changeset	765
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	766 uint16_t read_sram_w(uint32_t address, m68k_context * context)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	767 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	768 genesis_context * gen = context->system;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	769 address &= gen->save_ram_mask;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	770 switch(gen->save_flags)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	771 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	772 case RAM_FLAG_BOTH:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	773 return gen->save_ram[address] << 8 \| gen->save_ram[address+1];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	774 case RAM_FLAG_EVEN:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	775 return gen->save_ram[address >> 1] << 8 \| 0xFF;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	776 case RAM_FLAG_ODD:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	777 return gen->save_ram[address >> 1] \| 0xFF00;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	778 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	779 return 0xFFFF;//We should never get here
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	780 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	781
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	782 uint8_t read_sram_b(uint32_t address, m68k_context * context)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	783 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	784 genesis_context * gen = context->system;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	785 address &= gen->save_ram_mask;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	786 switch(gen->save_flags)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	787 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	788 case RAM_FLAG_BOTH:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	789 return gen->save_ram[address];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	790 case RAM_FLAG_EVEN:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	791 if (address & 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	792 return 0xFF;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	793 } else {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	794 return gen->save_ram[address >> 1];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	795 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	796 case RAM_FLAG_ODD:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	797 if (address & 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	798 return gen->save_ram[address >> 1];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	799 } else {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	800 return 0xFF;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	801 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	802 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	803 return 0xFF;//We should never get here
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	804 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	805
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	806 m68k_context * write_sram_area_w(uint32_t address, m68k_context * context, uint16_t value)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	807 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	808 genesis_context * gen = context->system;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	809 if ((gen->bank_regs[0] & 0x3) == 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	810 address &= gen->save_ram_mask;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	811 switch(gen->save_flags)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	812 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	813 case RAM_FLAG_BOTH:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	814 gen->save_ram[address] = value >> 8;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	815 gen->save_ram[address+1] = value;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	816 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	817 case RAM_FLAG_EVEN:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	818 gen->save_ram[address >> 1] = value >> 8;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	819 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	820 case RAM_FLAG_ODD:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	821 gen->save_ram[address >> 1] = value;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	822 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	823 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	824 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	825 return context;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	826 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	827
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	828 m68k_context * write_sram_area_b(uint32_t address, m68k_context * context, uint8_t value)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	829 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	830 genesis_context * gen = context->system;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	831 if ((gen->bank_regs[0] & 0x3) == 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	832 address &= gen->save_ram_mask;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	833 switch(gen->save_flags)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	834 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	835 case RAM_FLAG_BOTH:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	836 gen->save_ram[address] = value;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	837 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	838 case RAM_FLAG_EVEN:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	839 if (!(address & 1)) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	840 gen->save_ram[address >> 1] = value;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	841 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	842 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	843 case RAM_FLAG_ODD:
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	844 if (address & 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	845 gen->save_ram[address >> 1] = value;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	846 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	847 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	848 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	849 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	850 return context;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	851 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	852
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	853 m68k_context * write_bank_reg_w(uint32_t address, m68k_context * context, uint16_t value)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	854 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	855 genesis_context * gen = context->system;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	856 address &= 0xE;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	857 address >>= 1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	858 gen->bank_regs[address] = value;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	859 if (!address) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	860 if (value & 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	861 context->mem_pointers[2] = NULL;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	862 } else {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	863 context->mem_pointers[2] = cart + 0x200000/2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	864 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	865 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	866 return context;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	867 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	868
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	869 m68k_context * write_bank_reg_b(uint32_t address, m68k_context * context, uint8_t value)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	870 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	871 if (address & 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	872 genesis_context * gen = context->system;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	873 address &= 0xE;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	874 address >>= 1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	875 gen->bank_regs[address] = value;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	876 if (!address) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	877 if (value & 1) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	878 context->mem_pointers[2] = NULL;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	879 } else {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	880 context->mem_pointers[2] = cart + 0x200000/2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	881 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	882 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	883 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	884 return context;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	885 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	886
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	887 void set_speed_percent(genesis_context * context, uint32_t percent)
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	888 {
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	889 uint32_t old_clock = context->master_clock;
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	890 context->master_clock = ((uint64_t)context->normal_clock * (uint64_t)percent) / 100;
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	891 while (context->ym->current_cycle != context->psg->cycles) {
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	892 sync_sound(context, context->psg->cycles + MCLKS_PER_PSG);
424 7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	893 }
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	894 ym_adjust_master_clock(context->ym, context->master_clock);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	895 psg_adjust_master_clock(context->psg, context->master_clock);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	896 }
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	897
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	898 #define ROM_END 0x1A4
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	899 #define RAM_ID 0x1B0
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	900 #define RAM_FLAGS 0x1B2
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	901 #define RAM_START 0x1B4
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	902 #define RAM_END 0x1B8
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	903 #define MAX_MAP_CHUNKS (4+7+1)
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	904 #define RAM_FLAG_MASK 0x1800
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	905
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	906 const memmap_chunk static_map[] = {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	907 {0, 0x400000, 0xFFFFFF, 0, MMAP_READ, cart,
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	908 NULL, NULL, NULL, NULL},
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	909 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ \| MMAP_WRITE \| MMAP_CODE, ram,
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	910 NULL, NULL, NULL, NULL},
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	911 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, NULL,
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	912 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write,
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	913 (read_8_fun)vdp_port_read_b, (write_8_fun)vdp_port_write_b},
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	914 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, NULL,
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	915 (read_16_fun)io_read_w, (write_16_fun)io_write_w,
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	916 (read_8_fun)io_read, (write_8_fun)io_write}
467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	917 };
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	918
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	919 char * sram_filename;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	920 genesis_context * genesis;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	921 void save_sram()
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	922 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	923 FILE * f = fopen(sram_filename, "wb");
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	924 if (!f) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	925 fprintf(stderr, "Failed to open SRAM file %s for writing\n", sram_filename);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	926 return;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	927 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	928 uint32_t size = genesis->save_ram_mask+1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	929 if (genesis->save_flags != RAM_FLAG_BOTH) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	930 size/= 2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	931 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	932 fwrite(genesis->save_ram, 1, size, f);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	933 fclose(f);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	934 printf("Saved SRAM to %s\n", sram_filename);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	935 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	936
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	937 void init_run_cpu(genesis_context * gen, FILE * address_log, char * statefile, uint8_t * debugger)
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	938 {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	939 m68k_context context;
569 9b7fcf748be0 Rename x86_68k_options and m68k_to_x86.h to m68k_options and m68k_core.h respectively Michael Pavone <pavone@retrodev.com> parents: 565 diff changeset	940 m68k_options opts;
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	941 gen->m68k = &context;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	942 memmap_chunk memmap[MAX_MAP_CHUNKS];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	943 uint32_t num_chunks;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	944 void * initial_mapped = NULL;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	945 gen->save_ram = NULL;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	946 //TODO: Handle carts larger than 4MB
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	947 //TODO: Handle non-standard mappers
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	948 uint32_t size;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	949 if ((cart[RAM_ID/2] & 0xFF) == 'A' && (cart[RAM_ID/2] >> 8) == 'R') {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	950 //Cart has save RAM
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	951 uint32_t rom_end = ((cart[ROM_END/2] << 16) \| cart[ROM_END/2+1]) + 1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	952 uint32_t ram_start = (cart[RAM_START/2] << 16) \| cart[RAM_START/2+1];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	953 uint32_t ram_end = (cart[RAM_END/2] << 16) \| cart[RAM_END/2+1];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	954 uint16_t ram_flags = cart[RAM_FLAGS/2];
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	955 gen->save_flags = ram_flags & RAM_FLAG_MASK;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	956 memset(memmap, 0, sizeof(memmap_chunk)*2);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	957 if (ram_start >= rom_end) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	958 memmap[0].end = rom_end;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	959 memmap[0].mask = 0xFFFFFF;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	960 memmap[0].flags = MMAP_READ;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	961 memmap[0].buffer = cart;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	962
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	963 ram_start &= 0xFFFFFE;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	964 ram_end \|= 1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	965 memmap[1].start = ram_start;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	966 gen->save_ram_mask = memmap[1].mask = ram_end-ram_start;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	967 ram_end += 1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	968 memmap[1].end = ram_end;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	969 memmap[1].flags = MMAP_READ \| MMAP_WRITE;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	970 size = ram_end-ram_start;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	971 if ((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_ODD) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	972 memmap[1].flags \|= MMAP_ONLY_ODD;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	973 size /= 2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	974 } else if((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_EVEN) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	975 memmap[1].flags \|= MMAP_ONLY_EVEN;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	976 size /= 2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	977 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	978 memmap[1].buffer = gen->save_ram = malloc(size);
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	979
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	980 memcpy(memmap+2, static_map+1, sizeof(static_map)-sizeof(static_map[0]));
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	981 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	982 } else {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	983 //Assume the standard Sega mapper for now
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	984 memmap[0].end = 0x200000;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	985 memmap[0].mask = 0xFFFFFF;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	986 memmap[0].flags = MMAP_READ;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	987 memmap[0].buffer = cart;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	988
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	989 memmap[1].start = 0x200000;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	990 memmap[1].end = 0x400000;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	991 memmap[1].mask = 0x1FFFFF;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	992 ram_start &= 0xFFFFFE;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	993 ram_end \|= 1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	994 gen->save_ram_mask = ram_end-ram_start;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	995 memmap[1].flags = MMAP_READ \| MMAP_PTR_IDX \| MMAP_FUNC_NULL;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	996 memmap[1].ptr_index = 2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	997 memmap[1].read_16 = (read_16_fun)read_sram_w;//these will only be called when mem_pointers[2] == NULL
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	998 memmap[1].read_8 = (read_8_fun)read_sram_b;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	999 memmap[1].write_16 = (write_16_fun)write_sram_area_w;//these will be called all writes to the area
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1000 memmap[1].write_8 = (write_8_fun)write_sram_area_b;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1001 memcpy(memmap+2, static_map+1, sizeof(static_map)-sizeof(static_map[0]));
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1002 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+1;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1003 memset(memmap+num_chunks, 0, sizeof(memmap[num_chunks]));
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1004 memmap[num_chunks].start = 0xA13000;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1005 memmap[num_chunks].end = 0xA13100;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1006 memmap[num_chunks].mask = 0xFF;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1007 memmap[num_chunks].write_16 = (write_16_fun)write_bank_reg_w;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1008 memmap[num_chunks].write_8 = (write_8_fun)write_bank_reg_b;
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1009 num_chunks++;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1010 ram_end++;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1011 size = ram_end-ram_start;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1012 if ((ram_flags & RAM_FLAG_MASK) != RAM_FLAG_BOTH) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1013 size /= 2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1014 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1015 gen->save_ram = malloc(size);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1016 memmap[1].buffer = initial_mapped = cart + 0x200000/2;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1017 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1018 } else {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1019 memcpy(memmap, static_map, sizeof(static_map));
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1020 num_chunks = sizeof(static_map)/sizeof(memmap_chunk);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1021 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1022 if (gen->save_ram) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1023 memset(gen->save_ram, 0, size);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1024 FILE * f = fopen(sram_filename, "rb");
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1025 if (f) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1026 uint32_t read = fread(gen->save_ram, 1, size, f);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1027 fclose(f);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1028 if (read > 0) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1029 printf("Loaded SRAM from %s\n", sram_filename);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1030 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1031 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1032 atexit(save_sram);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1033 }
570 76bba9ffe351 Initial stab at separating the generic parts of the 68K core from the host-cpu specific parts. Michael Pavone <pavone@retrodev.com> parents: 569 diff changeset	1034 init_m68k_opts(&opts, memmap, num_chunks);
211 464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1035 opts.address_log = address_log;
558 dc9f178085a0 Use a typedef code_ptr in place of uint8_t * in 68K core to better support host instruction sets with different instruction word sizes. Make x86_68k_options contain a cpu_options so that gen_mem_fun can eventually be shared with the Z80 core. Mike Pavone <pavone@retrodev.com> parents: 548 diff changeset	1036 init_68k_context(&context, opts.gen.native_code_map, &opts);
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1037
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	1038 context.video_context = gen->vdp;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	1039 context.system = gen;
211 464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1040 //cartridge ROM
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1041 context.mem_pointers[0] = cart;
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	1042 context.target_cycle = context.sync_cycle = mclks_per_frame/MCLKS_PER_68K;
211 464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1043 //work RAM
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1044 context.mem_pointers[1] = ram;
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1045 //save RAM/map
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1046 context.mem_pointers[2] = initial_mapped;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1047 context.mem_pointers[3] = (uint16_t *)gen->save_ram;
211 464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1048 uint32_t address;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1049 address = cart[2] << 16 \| cart[3];
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1050 translate_m68k_stream(address, &context);
424 7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1051 if (statefile) {
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1052 uint32_t pc = load_gst(gen, statefile);
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1053 if (!pc) {
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	1054 fprintf(stderr, "Failed to load save state %s\n", statefile);
424 7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1055 exit(1);
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1056 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	1057 printf("Loaded %s\n", statefile);
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1058 if (debugger) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1059 insert_breakpoint(&context, pc, debugger);
424 7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1060 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	1061 adjust_int_cycle(gen->m68k, gen->vdp);
565 9324f721efa6 Add a separate flag/define for disabling the Z80 at compile time to ease refactoring Michael Pavone <pavone@retrodev.com> parents: 558 diff changeset	1062 #ifndef NO_Z80
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 447 diff changeset	1063 gen->z80->native_pc = z80_get_native_address_trans(gen->z80, gen->z80->pc);
548 a3afee2271ce Initial work on the x86-32 target Michael Pavone <pavone@retrodev.com> parents: 534 diff changeset	1064 #endif
424 7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1065 start_68k_context(&context, pc);
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1066 } else {
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1067 if (debugger) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1068 insert_breakpoint(&context, address, debugger);
424 7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1069 }
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1070 m68k_reset(&context);
211 464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1071 }
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1072 }
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	1073
340 58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1074 char title[64];
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1075
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1076 #define TITLE_START 0x150
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1077 #define TITLE_END (TITLE_START+48)
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1078
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1079 void update_title()
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1080 {
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1081 uint16_t *last = cart + TITLE_END/2 - 1;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1082 while(last > cart + TITLE_START/2 && *last == 0x2020)
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1083 {
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1084 last--;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1085 }
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1086 uint16_t *start = cart + TITLE_START/2;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1087 char *cur = title;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1088 char last_char = ' ';
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1089 for (; start != last; start++)
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1090 {
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1091 if ((last_char != ' ' \|\| (start >> 8) != ' ') && (start >> 8) < 0x80) {
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1092 (cur++) = start >> 8;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1093 last_char = *start >> 8;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1094 }
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1095 if (last_char != ' ' \|\| (start & 0xFF) != ' ' && (start & 0xFF) < 0x80) {
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1096 (cur++) = start;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1097 last_char = *start & 0xFF;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1098 }
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1099 }
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1100 (cur++) = start >> 8;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1101 if ((*start & 0xFF) != ' ') {
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1102 (cur++) = start;
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1103 }
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1104 strcpy(cur, " - BlastEm");
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1105 }
58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1106
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1107 #define REGION_START 0x1F0
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1108
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1109 int detect_specific_region(char region)
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1110 {
346 aff29d50afd5 Fix a region detection bug Mike Pavone <pavone@retrodev.com> parents: 345 diff changeset	1111 return (cart[REGION_START/2] & 0xFF) == region \|\| (cart[REGION_START/2] >> 8) == region \|\| (cart[REGION_START/2+1] & 0xFF) == region;
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1112 }
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1113
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1114 void detect_region()
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1115 {
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	1116 if (detect_specific_region('U')\|\| detect_specific_region('B') \|\| detect_specific_region('4')) {
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1117 version_reg = NO_DISK \| USA;
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1118 } else if (detect_specific_region('J')) {
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1119 version_reg = NO_DISK \| JAP;
343 467bfa17004a Mostly working runtime generation of memory map read/write functions Mike Pavone <pavone@retrodev.com> parents: 342 diff changeset	1120 } else if (detect_specific_region('E') \|\| detect_specific_region('A')) {
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1121 version_reg = NO_DISK \| EUR;
434 f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1122 } else {
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1123 char * def_region = tern_find_ptr(config, "default_region");
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1124 if (def_region) {
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1125 switch(*def_region)
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1126 {
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1127 case 'j':
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1128 case 'J':
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1129 version_reg = NO_DISK \| JAP;
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1130 break;
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1131 case 'u':
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1132 case 'U':
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1133 version_reg = NO_DISK \| USA;
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1134 break;
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1135 case 'e':
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1136 case 'E':
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1137 version_reg = NO_DISK \| EUR;
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1138 break;
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1139 }
f0631c85a90b Read default region from config file Mike Pavone <pavone@retrodev.com> parents: 433 diff changeset	1140 }
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1141 }
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1142 }
590 ea80559c67cb WIP effort to update z80 core for code gen changes Michael Pavone <pavone@retrodev.com> parents: 570 diff changeset	1143 #ifndef NO_Z80
ea80559c67cb WIP effort to update z80 core for code gen changes Michael Pavone <pavone@retrodev.com> parents: 570 diff changeset	1144 const memmap_chunk z80_map[] = {
604 39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	1145 { 0x0000, 0x4000, 0x1FFF, 0, MMAP_READ \| MMAP_WRITE \| MMAP_CODE, z80_ram, NULL, NULL, NULL, NULL },
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	1146 { 0x8000, 0x10000, 0xFFFF, 1, MMAP_READ \| MMAP_PTR_IDX \| MMAP_FUNC_NULL \| MMAP_BYTESWAP, NULL, NULL, NULL, z80_read_bank, z80_write_bank},
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	1147 { 0x4000, 0x6000, 0x0003, 0, 0, NULL, NULL, NULL, z80_read_ym, z80_write_ym},
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	1148 { 0x6000, 0x6100, 0xFFFF, 0, 0, NULL, NULL, NULL, NULL, z80_write_bank_reg},
39d7d463ed5b Get Z80 banked access sort of working again Michael Pavone <pavone@retrodev.com> parents: 602 diff changeset	1149 { 0x7F00, 0x8000, 0x00FF, 0, 0, NULL, NULL, NULL, z80_vdp_port_read, z80_vdp_port_write}
590 ea80559c67cb WIP effort to update z80 core for code gen changes Michael Pavone <pavone@retrodev.com> parents: 570 diff changeset	1150 };
ea80559c67cb WIP effort to update z80 core for code gen changes Michael Pavone <pavone@retrodev.com> parents: 570 diff changeset	1151 #endif
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1152
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1153 int main(int argc, char ** argv)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1154 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1155 if (argc < 2) {
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1156 fputs("Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n", stderr);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1157 return 1;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1158 }
496 6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere Mike Pavone <pavone@retrodev.com> parents: 488 diff changeset	1159 set_exe_str(argv[0]);
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere Mike Pavone <pavone@retrodev.com> parents: 488 diff changeset	1160 config = load_config();
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1161 detect_region();
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1162 int width = -1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1163 int height = -1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1164 int debug = 0;
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 405 diff changeset	1165 int ym_log = 0;
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1166 int loaded = 0;
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1167 uint8_t force_version = 0;
5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1168 char * romfname = NULL;
197 7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler Mike Pavone <pavone@retrodev.com> parents: 195 diff changeset	1169 FILE *address_log = NULL;
425 8b3ae850d1c4 Forgot to null initialize the statfile pointer Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	1170 char * statefile = NULL;
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1171 uint8_t * debuggerfun = NULL;
501 e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text Mike Pavone <pavone@retrodev.com> parents: 496 diff changeset	1172 uint8_t fullscreen = 0, use_gl = 1;
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1173 for (int i = 1; i < argc; i++) {
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1174 if (argv[i][0] == '-') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1175 switch(argv[i][1]) {
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1176 case 'b':
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1177 i++;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1178 if (i >= argc) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1179 fputs("-b must be followed by a frame count\n", stderr);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1180 return 1;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1181 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1182 headless = 1;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1183 exit_after = atoi(argv[i]);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 501 diff changeset	1184 break;
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1185 case 'd':
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1186 debuggerfun = (uint8_t *)debugger;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1187 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1188 case 'D':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1189 gdb_remote_init();
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1190 debuggerfun = (uint8_t *)gdb_debug_enter;
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1191 break;
338 5c34a9c39394 Re-enable frame limit, but add a command line flag to disable it Mike Pavone <pavone@retrodev.com> parents: 336 diff changeset	1192 case 'f':
444 cc754a309ead Add fullscreen support and add a keybinding for exiting the emulator Mike Pavone <pavone@retrodev.com> parents: 434 diff changeset	1193 fullscreen = 1;
338 5c34a9c39394 Re-enable frame limit, but add a command line flag to disable it Mike Pavone <pavone@retrodev.com> parents: 336 diff changeset	1194 break;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1195 case 'g':
501 e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text Mike Pavone <pavone@retrodev.com> parents: 496 diff changeset	1196 use_gl = 0;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1197 break;
197 7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler Mike Pavone <pavone@retrodev.com> parents: 195 diff changeset	1198 case 'l':
7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler Mike Pavone <pavone@retrodev.com> parents: 195 diff changeset	1199 address_log = fopen("address.log", "w");
7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler Mike Pavone <pavone@retrodev.com> parents: 195 diff changeset	1200 break;
464 226ed16b1fb6 Added version flag Mike Pavone <pavone@retrodev.com> parents: 463 diff changeset	1201 case 'v':
226ed16b1fb6 Added version flag Mike Pavone <pavone@retrodev.com> parents: 463 diff changeset	1202 printf("blastem %s\n", BLASTEM_VERSION);
226ed16b1fb6 Added version flag Mike Pavone <pavone@retrodev.com> parents: 463 diff changeset	1203 return 0;
226ed16b1fb6 Added version flag Mike Pavone <pavone@retrodev.com> parents: 463 diff changeset	1204 break;
265 c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	1205 case 'n':
c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	1206 z80_enabled = 0;
c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	1207 break;
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1208 case 'r':
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1209 i++;
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1210 if (i >= argc) {
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1211 fputs("-r must be followed by region (J, U or E)\n", stderr);
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1212 return 1;
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1213 }
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1214 switch (argv[i][0])
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1215 {
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1216 case 'j':
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1217 case 'J':
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1218 force_version = NO_DISK \| JAP;
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1219 break;
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1220 case 'u':
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1221 case 'U':
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1222 force_version = NO_DISK \| USA;
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1223 break;
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1224 case 'e':
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1225 case 'E':
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1226 force_version = NO_DISK \| EUR;
341 6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1227 break;
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1228 default:
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1229 fprintf(stderr, "'%c' is not a valid region character for the -r option\n", argv[i][0]);
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1230 return 1;
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1231 }
6ad8e36de685 Support regions other than USA Mike Pavone <pavone@retrodev.com> parents: 340 diff changeset	1232 break;
424 7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1233 case 's':
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1234 i++;
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1235 if (i >= argc) {
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1236 fputs("-s must be followed by a savestate filename\n", stderr);
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1237 return 1;
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1238 }
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1239 statefile = argv[i];
7e8e179116af Add support for loading GST format savestates Mike Pavone <pavone@retrodev.com> parents: 422 diff changeset	1240 break;
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 405 diff changeset	1241 case 'y':
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 405 diff changeset	1242 ym_log = 1;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 405 diff changeset	1243 break;
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1244 case 'h':
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1245 puts(
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1246 "Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n"
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1247 "Options:\n"
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1248 " -h Print this help text\n"
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1249 " -r (J\|U\|E) Force region to Japan, US or Europe respectively\n"
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1250 " -f Start in fullscreen mode\n"
501 e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text Mike Pavone <pavone@retrodev.com> parents: 496 diff changeset	1251 " -g Disable OpenGL rendering\n"
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1252 " -s FILE Load a GST format savestate from FILE\n"
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1253 " -d Enter debugger on startup\n"
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1254 " -n Disable Z80\n"
501 e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text Mike Pavone <pavone@retrodev.com> parents: 496 diff changeset	1255 " -v Display version number and exit\n"
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1256 " -l Log 68K code addresses (useful for assemblers)\n"
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1257 " -y Log individual YM-2612 channels to WAVE files\n"
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1258 );
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1259 return 0;
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1260 default:
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1261 fprintf(stderr, "Unrecognized switch %s\n", argv[i]);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1262 return 1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1263 }
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1264 } else if (!loaded) {
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1265 if(!load_rom(argv[i])) {
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1266 fprintf(stderr, "Failed to open %s for reading\n", argv[i]);
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1267 return 1;
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1268 }
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1269 romfname = argv[i];
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1270 loaded = 1;
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1271 } else if (width < 0) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1272 width = atoi(argv[i]);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1273 } else if (height < 0) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1274 height = atoi(argv[i]);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1275 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1276 }
463 a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1277 if (!loaded) {
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1278 fputs("You must specify a ROM filename!\n", stderr);
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1279 return 1;
a1d298119153 Added -h help text option Mike Pavone <pavone@retrodev.com> parents: 458 diff changeset	1280 }
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1281 if (force_version) {
5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1282 version_reg = force_version;
5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1283 }
340 58a085cfc6bd Set window title based on ROM header name Mike Pavone <pavone@retrodev.com> parents: 338 diff changeset	1284 update_title();
433 ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1285 int def_width = 0;
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1286 char *config_width = tern_find_ptr(config, "videowidth");
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1287 if (config_width) {
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1288 def_width = atoi(config_width);
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1289 }
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1290 if (!def_width) {
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1291 def_width = 640;
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1292 }
ed4d0017c041 Read default render width from config file Mike Pavone <pavone@retrodev.com> parents: 430 diff changeset	1293 width = width < 320 ? def_width : width;
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	1294 height = height < 240 ? (width/320) * 240 : height;
354 15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	1295 uint32_t fps = 60;
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	1296 if (version_reg & 0x40) {
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	1297 mclks_per_frame = MCLKS_LINE * LINES_PAL;
354 15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	1298 fps = 50;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	1299 }
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	1300 if (!headless) {
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1301 render_init(width, height, title, fps, fullscreen, use_gl);
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	1302 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1303 vdp_context v_context;
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	1304 genesis_context gen;
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	1305 memset(&gen, 0, sizeof(gen));
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	1306 gen.master_clock = gen.normal_clock = fps == 60 ? MCLKS_NTSC : MCLKS_PAL;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1307
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1308 init_vdp_context(&v_context);
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1309
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	1310 ym2612_context y_context;
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	1311 ym_init(&y_context, render_sample_rate(), gen.master_clock, MCLKS_PER_YM, render_audio_buffer(), ym_log ? YM_OPT_WAVE_LOG : 0);
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1312
354 15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	1313 psg_context p_context;
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 482 diff changeset	1314 psg_init(&p_context, render_sample_rate(), gen.master_clock, MCLKS_PER_PSG, render_audio_buffer());
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1315
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	1316 z80_context z_context;
565 9324f721efa6 Add a separate flag/define for disabling the Z80 at compile time to ease refactoring Michael Pavone <pavone@retrodev.com> parents: 558 diff changeset	1317 #ifndef NO_Z80
590 ea80559c67cb WIP effort to update z80 core for code gen changes Michael Pavone <pavone@retrodev.com> parents: 570 diff changeset	1318 z80_options z_opts;
ea80559c67cb WIP effort to update z80 core for code gen changes Michael Pavone <pavone@retrodev.com> parents: 570 diff changeset	1319 init_x86_z80_opts(&z_opts, z80_map, 5);
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	1320 init_z80_context(&z_context, &z_opts);
548 a3afee2271ce Initial work on the x86-32 target Michael Pavone <pavone@retrodev.com> parents: 534 diff changeset	1321 #endif
290 171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	1322
171f97e70d85 Implement writes from Z80 to YM-2612 Mike Pavone <pavone@retrodev.com> parents: 289 diff changeset	1323 z_context.system = &gen;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	1324 z_context.mem_pointers[0] = z80_ram;
342 13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region Mike Pavone <pavone@retrodev.com> parents: 341 diff changeset	1325 z_context.sync_cycle = z_context.target_cycle = mclks_per_frame/MCLKS_PER_Z80;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	1326 z_context.int_cycle = CYCLE_NEVER;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	1327 z_context.mem_pointers[1] = z_context.mem_pointers[2] = (uint8_t *)cart;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1328
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	1329 gen.z80 = &z_context;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	1330 gen.vdp = &v_context;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: 280 diff changeset	1331 gen.ym = &y_context;
354 15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though. Mike Pavone <pavone@retrodev.com> parents: 351 diff changeset	1332 gen.psg = &p_context;
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1333 genesis = &gen;
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1334
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1335 int fname_size = strlen(romfname);
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1336 sram_filename = malloc(fname_size+6);
469 5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1337 memcpy(sram_filename, romfname, fname_size);
351 2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1338 int i;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1339 for (i = fname_size-1; fname_size >= 0; --i) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1340 if (sram_filename[i] == '.') {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1341 strcpy(sram_filename + i + 1, "sram");
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1342 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1343 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1344 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1345 if (i < 0) {
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1346 strcpy(sram_filename + fname_size, ".sram");
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper. Mike Pavone <pavone@retrodev.com> parents: 346 diff changeset	1347 }
398 c26e48a93fa3 Make keybindings data driven so they can be populated from a config file later Mike Pavone <pavone@retrodev.com> parents: 395 diff changeset	1348 set_keybindings();
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 487 diff changeset	1349
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 510 diff changeset	1350 init_run_cpu(&gen, address_log, statefile, debuggerfun);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1351 return 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1352 }

Mercurial > repos > blastem

annotate blastem.c @ 604:39d7d463ed5b