repos/blastem: blastem.c annotate

annotate blastem.c @ 266:376df762ddf5

Fix some more retranslation bugs in the Z80 core

author	Mike Pavone <pavone@retrodev.com>
date	Wed, 01 May 2013 23:12:29 -0700
parents	c6d12878ea93
children	6c2d7e003a55

rev	line source
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	1 #include "68kinst.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	2 #include "m68k_to_x86.h"
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	3 #include "z80_to_x86.h"
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	4 #include "mem.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	5 #include "vdp.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	6 #include "render.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	7 #include "blastem.h"
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	8 #include <stdio.h>
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	9 #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	10 #include <string.h>
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	11
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	12 #define CARTRIDGE_WORDS 0x200000
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	13 #define RAM_WORDS 32 * 1024
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	14 #define Z80_RAM_BYTES 8 * 1024
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	15 #define MCLKS_PER_68K 7
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	16 #define MCLKS_PER_Z80 15
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	17 //TODO: Figure out the exact value for this
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	18 #define MCLKS_PER_FRAME (MCLKS_LINE*262)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	19 #define CYCLE_NEVER 0xFFFFFFFF
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	20
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	21 uint16_t cart[CARTRIDGE_WORDS];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	22 uint16_t ram[RAM_WORDS];
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	23 uint8_t z80_ram[Z80_RAM_BYTES];
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	24
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	25 io_port gamepad_1;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	26 io_port gamepad_2;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	27
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	28 int headless = 0;
265 c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	29 int z80_enabled = 1;
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	30
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	31 #ifndef MIN
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	32 #define MIN(a,b) ((a) < (b) ? (a) : (b))
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	33 #endif
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	34
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	35 #define SMD_HEADER_SIZE 512
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	36 #define SMD_MAGIC1 0x03
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	37 #define SMD_MAGIC2 0xAA
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	38 #define SMD_MAGIC3 0xBB
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	39 #define SMD_BLOCK_SIZE 0x4000
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	40
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	41 int load_smd_rom(long filesize, FILE * f)
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	42 {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	43 uint8_t block[SMD_BLOCK_SIZE];
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	44 filesize -= SMD_HEADER_SIZE;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	45 fseek(f, SMD_HEADER_SIZE, SEEK_SET);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	46
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	47 uint16_t * dst = cart;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	48 while (filesize > 0) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	49 fread(block, 1, SMD_BLOCK_SIZE, f);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	50 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	51 (dst++) = high << 8 \| *low;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	52 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	53 filesize -= SMD_BLOCK_SIZE;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	54 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	55 return 1;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	56 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	57
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	58 int load_rom(char * filename)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	59 {
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	60 uint8_t header[10];
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	61 FILE * f = fopen(filename, "rb");
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	62 if (!f) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	63 return 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	64 }
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	65 fread(header, 1, sizeof(header), f);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	66 fseek(f, 0, SEEK_END);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	67 long filesize = ftell(f);
158 a2ab895d9708 Fix predec address mode when used as source Mike Pavone <pavone@retrodev.com> parents: 153 diff changeset	68 if (filesize/2 > CARTRIDGE_WORDS) {
a2ab895d9708 Fix predec address mode when used as source Mike Pavone <pavone@retrodev.com> parents: 153 diff changeset	69 //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	70 filesize = CARTRIDGE_WORDS*2;
a2ab895d9708 Fix predec address mode when used as source Mike Pavone <pavone@retrodev.com> parents: 153 diff changeset	71 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	72 fseek(f, 0, SEEK_SET);
166 97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	73 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	74 int i;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	75 for (i = 3; i < 8; i++) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	76 if (header[i] != 0) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	77 break;
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	78 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	79 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	80 if (i == 8) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	81 if (header[2]) {
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	82 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	83 exit(1);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	84 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	85 return load_smd_rom(filesize, f);
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	86 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	87 }
97aa449706c2 Added SMD ROM support Mike Pavone <pavone@retrodev.com> parents: 158 diff changeset	88 fread(cart, 2, filesize/2, f);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	89 fclose(f);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	90 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	91 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	92 cur = (cur >> 8) \| (*cur << 8);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	93 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	94 //TODO: Mirror ROM
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	95 return 1;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	96 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	97
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	98 uint16_t read_dma_value(uint32_t address)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	99 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	100 //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	101 if (address < 0x200000) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	102 return cart[address];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	103 } else if(address >= 0x700000) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	104 return ram[address & 0x7FFF];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	105 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	106 //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	107 return 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	108 }
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 #define VINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_68K)
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	111 #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	112
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	113 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	114 {
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	115 if (!(v_context->regs[REG_MODE_2] & 0x20 && ((context->status & 0x7) < 6)) \|\| context->current_cycle >= VINT_CYCLE) {
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	116 context->int_cycle = CYCLE_NEVER;
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	117 context->target_cycle = context->sync_cycle;
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	118 } else if (context->int_cycle > VINT_CYCLE) {
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	119 context->int_cycle = VINT_CYCLE;
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	120 context->int_num = 6;
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	121 if (context->int_cycle < context->sync_cycle) {
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	122 context->target_cycle = context->int_cycle;
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	123 }
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	124 }
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	125 }
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	126
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	127 int break_on_sync = 0;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	128 #define Z80_ACK_DELAY 3 //TODO: Calculate this on the fly based on how synced up the Z80 and 68K clocks are
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	129
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	130 uint8_t reset = 1;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	131 uint8_t need_reset = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	132 uint8_t busreq = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	133 uint8_t busack = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	134 uint32_t busack_cycle = CYCLE_NEVER;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	135 uint8_t new_busack = 0;
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	136
209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	137 m68k_context * sync_components(m68k_context * context, uint32_t address)
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	138 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	139 //TODO: Handle sync targets smaller than a single frame
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	140 z80_context * z_context = context->next_cpu;
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	141 vdp_context * v_context = context->video_context;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	142 uint32_t mclks = context->current_cycle * MCLKS_PER_68K;
265 c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	143 if (z80_enabled && !reset && !busreq) {
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	144 if (need_reset) {
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	145 z80_reset(z_context);
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	146 need_reset = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	147 }
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	148 z_context->sync_cycle = mclks / MCLKS_PER_Z80;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	149 while (z_context->current_cycle < z_context->sync_cycle) {
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	150 if (z_context->iff1 && z_context->current_cycle < ZVINT_CYCLE) {
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	151 z_context->int_cycle = ZVINT_CYCLE;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	152 }
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	153 z_context->target_cycle = z_context->sync_cycle < z_context->int_cycle ? z_context->sync_cycle : z_context->int_cycle;
266 376df762ddf5 Fix some more retranslation bugs in the Z80 core Mike Pavone <pavone@retrodev.com> parents: 265 diff changeset	154 //printf("Running Z80 from cycle %d to cycle %d. Native PC: %p\n", z_context->current_cycle, z_context->sync_cycle, z_context->native_pc);
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	155 z80_run(z_context);
266 376df762ddf5 Fix some more retranslation bugs in the Z80 core Mike Pavone <pavone@retrodev.com> parents: 265 diff changeset	156 //printf("Z80 ran to cycle %d\n", z_context->current_cycle);
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	157 }
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	158 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	159 if (mclks >= MCLKS_PER_FRAME) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	160 //printf("reached frame end \| 68K Cycles: %d, MCLK Cycles: %d\n", context->current_cycle, mclks);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	161 vdp_run_context(v_context, MCLKS_PER_FRAME);
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	162 if (!headless) {
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	163 break_on_sync \|= wait_render_frame(v_context);
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	164 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	165 mclks -= MCLKS_PER_FRAME;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	166 vdp_adjust_cycles(v_context, MCLKS_PER_FRAME);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	167 io_adjust_cycles(&gamepad_1, context->current_cycle, MCLKS_PER_FRAME/MCLKS_PER_68K);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	168 io_adjust_cycles(&gamepad_2, context->current_cycle, MCLKS_PER_FRAME/MCLKS_PER_68K);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	169 context->current_cycle -= MCLKS_PER_FRAME/MCLKS_PER_68K;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	170 if (z_context->current_cycle >= MCLKS_PER_FRAME/MCLKS_PER_Z80) {
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	171 z_context->current_cycle -= MCLKS_PER_FRAME/MCLKS_PER_Z80;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	172 } else {
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	173 z_context->current_cycle = 0;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	174 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	175 if (mclks) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	176 vdp_run_context(v_context, mclks);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	177 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	178 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	179 //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	180 vdp_run_context(v_context, mclks);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	181 }
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	182 adjust_int_cycle(context, v_context);
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	183 if (break_on_sync && address) {
209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	184 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	185 debugger(context, address);
209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	186 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	187 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	188 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	189
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	190 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	191 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	192 //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	193 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	194 vdp_context * v_context = context->video_context;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	195 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	196 int blocked;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	197 if (vdp_port < 4) {
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	198 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	199 while(v_context->flags & FLAG_DMA_RUN) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	200 vdp_run_dma_done(v_context, MCLKS_PER_FRAME);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	201 if (v_context->cycles >= MCLKS_PER_FRAME) {
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	202 if (!headless) {
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	203 wait_render_frame(v_context);
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	204 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	205 vdp_adjust_cycles(v_context, MCLKS_PER_FRAME);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	206 io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, MCLKS_PER_FRAME/MCLKS_PER_68K);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	207 io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, MCLKS_PER_FRAME/MCLKS_PER_68K);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	208 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	209 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	210 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	211 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	212 } else if(vdp_port < 8) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	213 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	214 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	215 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	216 while(v_context->flags & FLAG_DMA_RUN) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	217 vdp_run_dma_done(v_context, MCLKS_PER_FRAME);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	218 if (v_context->cycles >= MCLKS_PER_FRAME) {
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	219 if (!headless) {
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	220 wait_render_frame(v_context);
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	221 }
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	222 vdp_adjust_cycles(v_context, MCLKS_PER_FRAME);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	223 io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, MCLKS_PER_FRAME/MCLKS_PER_68K);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	224 io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, MCLKS_PER_FRAME/MCLKS_PER_68K);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	225 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	226 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	227 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	228 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	229 } else {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	230 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	231 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	232 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 144 diff changeset	233 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	234 } 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	235 adjust_int_cycle(context, v_context);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	236 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	237 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	238 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	239 exit(1);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	240 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	241 context->current_cycle = v_context->cycles/MCLKS_PER_68K;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	242 } else if (vdp_port < 0x18) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	243 //TODO: Implement PSG
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	244 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	245 //TODO: Implement undocumented test register(s)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	246 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	247 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	248 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	249
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	250 m68k_context * vdp_port_read(uint32_t vdp_port, m68k_context * context)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	251 {
198 209a37eed3e7 Add support for breaking into the debugger while game is running Mike Pavone <pavone@retrodev.com> parents: 197 diff changeset	252 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	253 vdp_context * v_context = context->video_context;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	254 if (vdp_port < 0x10) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	255 if (vdp_port < 4) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	256 context->value = vdp_data_port_read(v_context);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	257 } else if(vdp_port < 8) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	258 context->value = vdp_control_port_read(v_context);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	259 } else {
137 0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 130 diff changeset	260 context->value = vdp_hv_counter_read(v_context);
0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 130 diff changeset	261 //printf("HV Counter: %X at cycle %d\n", context->value, v_context->cycles);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	262 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	263 context->current_cycle = v_context->cycles/MCLKS_PER_68K;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	264 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	265 printf("Illegal read from PSG or test register port %X\n", vdp_port);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	266 exit(1);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	267 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	268 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	269 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	270
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	271 #define TH 0x40
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	272 #define TH_TIMEOUT 8000
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	273
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	274 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	275 {
89 9757b4c6c33f Minor joypad fix and commeount out some debug printfs Mike Pavone <pavone@retrodev.com> parents: 88 diff changeset	276 /*uint8_t control = pad->control \| 0x80;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	277 uint8_t th = control & pad->output;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	278 if (pad->input[GAMEPAD_TH0] \|\| pad->input[GAMEPAD_TH1]) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	279 printf("adjust_cycles \| control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, current_cycle);
89 9757b4c6c33f Minor joypad fix and commeount out some debug printfs Mike Pavone <pavone@retrodev.com> parents: 88 diff changeset	280 }*/
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	281 if (current_cycle >= pad->timeout_cycle) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	282 pad->th_counter = 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	283 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	284 pad->timeout_cycle -= deduction;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	285 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	286 if (busack_cycle < CYCLE_NEVER && current_cycle < busack_cycle) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	287 busack_cycle -= deduction;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	288 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	289 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	290
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	291 void io_data_write(io_port * pad, m68k_context * context, uint8_t value)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	292 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	293 if (pad->control & TH) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	294 //check if TH has changed
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	295 if ((pad->output & TH) ^ (value & TH)) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	296 if (context->current_cycle >= pad->timeout_cycle) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	297 pad->th_counter = 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	298 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	299 if (!(value & TH)) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	300 pad->th_counter++;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	301 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	302 pad->timeout_cycle = context->current_cycle + TH_TIMEOUT;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	303 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	304 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	305 pad->output = value;
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
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	308 void io_data_read(io_port * pad, m68k_context * context)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	309 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	310 uint8_t control = pad->control \| 0x80;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	311 uint8_t th = control & pad->output;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	312 uint8_t input;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	313 if (context->current_cycle >= pad->timeout_cycle) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	314 pad->th_counter = 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	315 }
89 9757b4c6c33f Minor joypad fix and commeount out some debug printfs Mike Pavone <pavone@retrodev.com> parents: 88 diff changeset	316 /*if (pad->input[GAMEPAD_TH0] \|\| pad->input[GAMEPAD_TH1]) {
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	317 printf("io_data_read \| control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, context->current_cycle);
89 9757b4c6c33f Minor joypad fix and commeount out some debug printfs Mike Pavone <pavone@retrodev.com> parents: 88 diff changeset	318 }*/
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	319 if (th) {
195 c615061f7914 Fix 6-button controller emulation Mike Pavone <pavone@retrodev.com> parents: 186 diff changeset	320 if (pad->th_counter == 3) {
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	321 input = pad->input[GAMEPAD_EXTRA];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	322 } else {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	323 input = pad->input[GAMEPAD_TH1];
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	324 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	325 } else {
195 c615061f7914 Fix 6-button controller emulation Mike Pavone <pavone@retrodev.com> parents: 186 diff changeset	326 if (pad->th_counter == 3) {
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	327 input = pad->input[GAMEPAD_TH0] \| 0xF;
195 c615061f7914 Fix 6-button controller emulation Mike Pavone <pavone@retrodev.com> parents: 186 diff changeset	328 } else if(pad->th_counter == 4) {
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	329 input = pad->input[GAMEPAD_TH0] & 0x30;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	330 } else {
89 9757b4c6c33f Minor joypad fix and commeount out some debug printfs Mike Pavone <pavone@retrodev.com> parents: 88 diff changeset	331 input = pad->input[GAMEPAD_TH0] \| 0xC;
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 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	334 context->value = ((~input) & (~control)) \| (pad->output & control);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	335 /*if (pad->input[GAMEPAD_TH0] \|\| pad->input[GAMEPAD_TH1]) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	336 printf ("value: %X\n", context->value);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	337 }*/
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	338 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	339
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	340 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	341 {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	342 if (location < 0x10000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	343 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	344 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	345 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	346 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	347 if (!(busack \|\| reset)) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	348 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	349 if (location < 0x4000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	350 z80_ram[location & 0x1FFF] = value;
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	351 z80_handle_code_write(location & 0x1FFF, context->next_cpu);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	352 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	353 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	354 } else {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	355 location &= 0x1FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	356 if (location < 0x100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	357 switch(location/2)
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	358 {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	359 case 0x1:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	360 io_data_write(&gamepad_1, context, value);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	361 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	362 case 0x2:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	363 io_data_write(&gamepad_2, context, value);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	364 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	365 case 0x3://PORT C Data
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	366 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	367 case 0x4:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	368 gamepad_1.control = value;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	369 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	370 case 0x5:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	371 gamepad_2.control = value;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	372 break;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	373 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	374 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	375 if (location == 0x1100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	376 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	377 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	378 busack_cycle = CYCLE_NEVER;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	379 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	380 if (value & 1) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	381 busreq = 1;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	382 if(!reset) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	383 busack_cycle = context->current_cycle + Z80_ACK_DELAY;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	384 new_busack = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	385 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	386 } else {
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	387 if (busreq) {
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	388 z80_context * z_context = context->next_cpu;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	389 //TODO: Add necessary delay between release of busreq and resumption of execution
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	390 z_context->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	391 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	392 busreq = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	393 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	394 busack = 1;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	395 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	396 } else if (location == 0x1200) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	397 if (value & 1) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	398 if (reset && busreq) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	399 new_busack = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	400 busack_cycle = context->current_cycle + Z80_ACK_DELAY;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	401 }
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	402 //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	403 if (reset) {
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	404 z80_context * z_context = context->next_cpu;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	405 need_reset = 1;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	406 //TODO: Add necessary delay between release of reset and start of execution
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	407 z_context->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	408 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	409 reset = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	410 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	411 reset = 1;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	412 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	413 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	414 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	415 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	416 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	417 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	418
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	419 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	420 {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	421 if (location < 0x10000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	422 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	423 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	424 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	425 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	426 if (!(busack \|\| reset)) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	427 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	428 if (location < 0x4000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	429 z80_ram[location & 0x1FFE] = value >> 8;
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	430 z80_handle_code_write(location & 0x1FFE, context->next_cpu);
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	431 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	432 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	433 } else {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	434 location &= 0x1FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	435 if (location < 0x100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	436 switch(location/2)
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	437 {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	438 case 0x1:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	439 io_data_write(&gamepad_1, context, value);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	440 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	441 case 0x2:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	442 io_data_write(&gamepad_2, context, value);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	443 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	444 case 0x3://PORT C Data
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	445 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	446 case 0x4:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	447 gamepad_1.control = value;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	448 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	449 case 0x5:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	450 gamepad_2.control = value;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	451 break;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	452 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	453 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	454 //printf("IO Write of %X to %X @ %d\n", value, location, context->current_cycle);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	455 if (location == 0x1100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	456 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	457 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	458 busack_cycle = CYCLE_NEVER;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	459 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	460 if (value & 0x100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	461 busreq = 1;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	462 if(!reset) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	463 busack_cycle = context->current_cycle + Z80_ACK_DELAY;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	464 new_busack = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	465 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	466 } else {
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	467 if (busreq) {
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	468 z80_context * z_context = context->next_cpu;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	469 //TODO: Add necessary delay between release of busreq and resumption of execution
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	470 z_context->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	471 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	472 busreq = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	473 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	474 busack = 1;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	475 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	476 } else if (location == 0x1200) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	477 if (value & 0x100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	478 if (reset && busreq) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	479 new_busack = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	480 busack_cycle = context->current_cycle + Z80_ACK_DELAY;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	481 }
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	482 //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	483 if (reset) {
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	484 z80_context * z_context = context->next_cpu;
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	485 need_reset = 1;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	486 //TODO: Add necessary delay between release of reset and start of execution
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	487 z_context->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	488 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	489 reset = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	490 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	491 reset = 1;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	492 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	493 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	494 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	495 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	496 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	497 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	498
130 0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	499 #define USA 0x80
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	500 #define JAP 0x00
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	501 #define EUR 0xC0
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	502 #define NO_DISK 0x20
0bdbffa9fe90 Make version register return correct value for USA Mike Pavone <pavone@retrodev.com> parents: 115 diff changeset	503 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	504
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	505 m68k_context * io_read(uint32_t location, m68k_context * context)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	506 {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	507 if (location < 0x10000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	508 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	509 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	510 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	511 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	512 if (!(busack \|\| reset)) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	513 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	514 if (location < 0x4000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	515 context->value = z80_ram[location & 0x1FFF];
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	516 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	517 context->value = 0xFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	518 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	519 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	520 context->value = 0xFF;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	521 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	522 } else {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	523 location &= 0x1FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	524 if (location < 0x100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	525 switch(location/2)
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	526 {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	527 case 0x0:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	528 //version bits should be 0 for now since we're not emulating TMSS
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	529 //Not sure about the other bits
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	530 context->value = version_reg;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	531 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	532 case 0x1:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	533 io_data_read(&gamepad_1, context);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	534 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	535 case 0x2:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	536 io_data_read(&gamepad_2, context);
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 0x3://PORT C Data
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	539 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	540 case 0x4:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	541 context->value = gamepad_1.control;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	542 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	543 case 0x5:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	544 context->value = gamepad_2.control;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	545 break;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	546 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	547 } else {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	548 if (location == 0x1100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	549 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	550 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	551 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	552 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	553 context->value = reset \|\| busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	554 //printf("Byte read of BUSREQ returned %d @ %d (reset: %d, busack: %d)\n", context->value, context->current_cycle, reset, busack);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	555 } else if (location == 0x1200) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	556 context->value = !reset;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	557 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	558 printf("Byte read of unknown IO location: %X\n", location);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	559 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	560 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	561 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	562 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	563 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	564
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	565 m68k_context * io_read_w(uint32_t location, m68k_context * context)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	566 {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	567 if (location < 0x10000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	568 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	569 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	570 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	571 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	572 if (!(busack \|\| reset)) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	573 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	574 if (location < 0x4000) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	575 context->value = z80_ram[location & 0x1FFE];
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	576 context->value \|= context->value << 8;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	577 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	578 context->value = 0xFFFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	579 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	580 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	581 context->value = 0xFFFF;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	582 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	583 } else {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	584 location &= 0x1FFF;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	585 if (location < 0x100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	586 switch(location/2)
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	587 {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	588 case 0x0:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	589 //version bits should be 0 for now since we're not emulating TMSS
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	590 //Not sure about the other bits
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	591 context->value = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	592 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	593 case 0x1:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	594 io_data_read(&gamepad_1, context);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	595 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	596 case 0x2:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	597 io_data_read(&gamepad_2, context);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	598 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	599 case 0x3://PORT C Data
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	600 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	601 case 0x4:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	602 context->value = gamepad_1.control;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	603 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	604 case 0x5:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	605 context->value = gamepad_2.control;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	606 break;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	607 case 0x6:
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	608 //PORT C Control
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	609 context->value = 0;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	610 break;
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	611 }
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	612 context->value = context->value \| (context->value << 8);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	613 //printf("Word read to %X returned %d\n", location, context->value);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	614 } else {
153 42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	615 if (location == 0x1100) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	616 if (busack_cycle > context->current_cycle) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	617 busack = new_busack;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	618 busack_cycle = CYCLE_NEVER;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	619 }
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	620 context->value = (reset \|\| busack) << 8;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	621 //printf("Word read of BUSREQ returned %d\n", context->value);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	622 } else if (location == 0x1200) {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	623 context->value = (!reset) << 8;
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	624 } else {
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	625 printf("Word read of unknown IO location: %X\n", location);
42c031184e8a Implement access to Z80 RAM Mike Pavone <pavone@retrodev.com> parents: 149 diff changeset	626 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	627 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	628 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	629 return context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	630 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	631
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	632 typedef struct bp_def {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	633 struct bp_def * next;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	634 uint32_t address;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	635 uint32_t index;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	636 } bp_def;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	637
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	638 bp_def * breakpoints = NULL;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	639 uint32_t bp_index = 0;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	640
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	641 bp_def find_breakpoint(bp_def cur, uint32_t address)
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	642 {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	643 while (*cur) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	644 if ((*cur)->address == address) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	645 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	646 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	647 cur = &((*cur)->next);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	648 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	649 return cur;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	650 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	651
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	652 bp_def find_breakpoint_idx(bp_def cur, uint32_t index)
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	653 {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	654 while (*cur) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	655 if ((*cur)->index == index) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	656 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	657 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	658 cur = &((*cur)->next);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	659 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	660 return cur;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	661 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	662
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	663 char * find_param(char * buf)
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	664 {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	665 for (; *buf; buf++) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	666 if (*buf == ' ') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	667 if (*(buf+1)) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	668 return buf+1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	669 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	670 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	671 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	672 return NULL;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	673 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	674
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	675 void strip_nl(char * buf)
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	676 {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	677 for(; *buf; buf++) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	678 if (*buf == '\n') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	679 *buf = 0;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	680 return;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	681 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	682 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	683 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	684
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	685 m68k_context * debugger(m68k_context * context, uint32_t address)
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	686 {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	687 static char last_cmd[1024];
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	688 char input_buf[1024];
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	689 static uint32_t branch_t;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	690 static uint32_t branch_f;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	691 m68kinst inst;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	692 //probably not necessary, but let's play it safe
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	693 address &= 0xFFFFFF;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	694 if (address == branch_t) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	695 bp_def ** f_bp = find_breakpoint(&breakpoints, branch_f);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	696 if (!*f_bp) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	697 remove_breakpoint(context, branch_f);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	698 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	699 branch_t = branch_f = 0;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	700 } else if(address == branch_f) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	701 bp_def ** t_bp = find_breakpoint(&breakpoints, branch_t);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	702 if (!*t_bp) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	703 remove_breakpoint(context, branch_t);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	704 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	705 branch_t = branch_f = 0;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	706 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	707 //Check if this is a user set breakpoint, or just a temporary one
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	708 bp_def ** this_bp = find_breakpoint(&breakpoints, address);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	709 if (*this_bp) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	710 printf("Breakpoint %d hit\n", (*this_bp)->index);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	711 } else {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	712 remove_breakpoint(context, address);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	713 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	714 uint16_t * pc;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	715 if (address < 0x400000) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	716 pc = cart + address/2;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	717 } else if(address > 0xE00000) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	718 pc = ram + (address & 0xFFFF)/2;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	719 } else {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	720 fprintf(stderr, "Entered debugger at address %X\n", address);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	721 exit(1);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	722 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	723 uint16_t * after_pc = m68k_decode(pc, &inst, address);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	724 m68k_disasm(&inst, input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	725 printf("%X: %s\n", address, input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	726 uint32_t after = address + (after_pc-pc)*2;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	727 int debugging = 1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	728 while (debugging) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	729 fputs(">", stdout);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	730 if (!fgets(input_buf, sizeof(input_buf), stdin)) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	731 fputs("fgets failed", stderr);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	732 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	733 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	734 strip_nl(input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	735 //hitting enter repeats last command
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	736 if (input_buf[0]) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	737 strcpy(last_cmd, input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	738 } else {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	739 strcpy(input_buf, last_cmd);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	740 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	741 char * param;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	742 char format[8];
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	743 uint32_t value;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	744 bp_def * new_bp;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	745 switch(input_buf[0])
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	746 {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	747 case 'c':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	748 puts("Continuing");
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	749 debugging = 0;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	750 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	751 case 'b':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	752 param = find_param(input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	753 if (!param) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	754 fputs("b command requires a parameter\n", stderr);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	755 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	756 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	757 value = strtol(param, NULL, 16);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	758 insert_breakpoint(context, value, (uint8_t *)debugger);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	759 new_bp = malloc(sizeof(bp_def));
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	760 new_bp->next = breakpoints;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	761 new_bp->address = value;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	762 new_bp->index = bp_index++;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	763 breakpoints = new_bp;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	764 printf("Breakpoint %d set at %X\n", new_bp->index, value);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	765 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	766 case 'a':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	767 param = find_param(input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	768 if (!param) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	769 fputs("a command requires a parameter\n", stderr);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	770 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	771 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	772 value = strtol(param, NULL, 16);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	773 insert_breakpoint(context, value, (uint8_t *)debugger);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	774 debugging = 0;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	775 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	776 case 'd':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	777 param = find_param(input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	778 if (!param) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	779 fputs("b command requires a parameter\n", stderr);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	780 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	781 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	782 value = atoi(param);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	783 this_bp = find_breakpoint_idx(&breakpoints, value);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	784 if (!*this_bp) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	785 fprintf(stderr, "Breakpoint %d does not exist\n", value);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	786 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	787 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	788 new_bp = *this_bp;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	789 this_bp = (this_bp)->next;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	790 free(new_bp);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	791 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	792 case 'p':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	793 strcpy(format, "%s: %d\n");
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	794 if (input_buf[1] == '/') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	795 switch (input_buf[2])
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	796 {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	797 case 'x':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	798 case 'X':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	799 case 'd':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	800 case 'c':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	801 format[5] = input_buf[2];
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	802 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	803 default:
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	804 fprintf(stderr, "Unrecognized format character: %c\n", input_buf[2]);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	805 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	806 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	807 param = find_param(input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	808 if (!param) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	809 fputs("p command requires a parameter\n", stderr);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	810 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	811 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	812 if (param[0] == 'd' && param[1] >= '0' && param[1] <= '7') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	813 value = context->dregs[param[1]-'0'];
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	814 } else if (param[0] == 'a' && param[1] >= '0' && param[1] <= '7') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	815 value = context->aregs[param[1]-'0'];
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	816 } else if (param[0] == 'S' && param[1] == 'R') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	817 value = (context->status << 8);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	818 for (int flag = 0; flag < 5; flag++) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	819 value \|= context->flags[flag] << (4-flag);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	820 }
185 b204fbed4efe Add ability to print out current 68K cycle in debugger Mike Pavone <pavone@retrodev.com> parents: 184 diff changeset	821 } else if(param[0] == 'c') {
b204fbed4efe Add ability to print out current 68K cycle in debugger Mike Pavone <pavone@retrodev.com> parents: 184 diff changeset	822 value = context->current_cycle;
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	823 } else if (param[0] == '0' && param[1] == 'x') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	824 uint32_t p_addr = strtol(param+2, NULL, 16);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	825 value = read_dma_value(p_addr/2);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	826 } else {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	827 fprintf(stderr, "Unrecognized parameter to p: %s\n", param);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	828 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	829 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	830 printf(format, param, value);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	831 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	832 case 'n':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	833 //TODO: Deal with jmp, dbcc, rtr and rte
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	834 if (inst.op == M68K_RTS) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	835 after = (read_dma_value(context->aregs[7]/2) << 16) \| read_dma_value(context->aregs[7]/2 + 1);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	836 } else if(inst.op == M68K_BCC && inst.extra.cond != COND_FALSE) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	837 if (inst.extra.cond = COND_TRUE) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	838 after = inst.address + 2 + inst.src.params.immed;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	839 } else {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	840 branch_f = after;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	841 branch_t = inst.address + 2 + inst.src.params.immed;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	842 insert_breakpoint(context, branch_t, (uint8_t *)debugger);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	843 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	844 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	845 insert_breakpoint(context, after, (uint8_t *)debugger);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	846 debugging = 0;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	847 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	848 case 'q':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	849 puts("Quitting");
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	850 exit(0);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	851 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	852 default:
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	853 fprintf(stderr, "Unrecognized debugger command %s\n", input_buf);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	854 break;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	855 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	856 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	857 return context;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	858 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	859
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	860 void init_run_cpu(vdp_context * vcontext, z80_context * zcontext, int debug, FILE * address_log)
211 464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	861 {
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	862 m68k_context context;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	863 x86_68k_options opts;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	864 init_x86_68k_opts(&opts);
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	865 opts.address_log = address_log;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	866 init_68k_context(&context, opts.native_code_map, &opts);
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	867
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	868 context.video_context = vcontext;
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	869 context.next_cpu = zcontext;
211 464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	870 //cartridge ROM
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	871 context.mem_pointers[0] = cart;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	872 context.target_cycle = context.sync_cycle = MCLKS_PER_FRAME/MCLKS_PER_68K;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	873 //work RAM
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	874 context.mem_pointers[1] = ram;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	875 uint32_t address;
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	876 /*address = cart[0x68/2] << 16 \| cart[0x6A/2];
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	877 translate_m68k_stream(address, &context);
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	878 address = cart[0x70/2] << 16 \| cart[0x72/2];
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	879 translate_m68k_stream(address, &context);
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	880 address = cart[0x78/2] << 16 \| cart[0x7A/2];
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	881 translate_m68k_stream(address, &context);*/
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	882 address = cart[2] << 16 \| cart[3];
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	883 translate_m68k_stream(address, &context);
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	884 if (debug) {
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	885 insert_breakpoint(&context, address, (uint8_t *)debugger);
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	886 }
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	887 m68k_reset(&context);
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	888 }
464513050c85 Small bit of cleanup Mike Pavone <pavone@retrodev.com> parents: 198 diff changeset	889
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	890 int main(int argc, char ** argv)
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	891 {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	892 if (argc < 2) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	893 fputs("Usage: blastem FILENAME\n", stderr);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	894 return 1;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	895 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	896 if(!load_rom(argv[1])) {
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	897 fprintf(stderr, "Failed to open %s for reading\n", argv[1]);
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	898 return 1;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	899 }
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	900 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	901 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	902 int debug = 0;
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	903 FILE *address_log = NULL;
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	904 for (int i = 2; i < argc; i++) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	905 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	906 switch(argv[i][1]) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	907 case 'd':
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	908 debug = 1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	909 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	910 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	911 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	912 break;
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	913 case 'v':
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	914 headless = 1;
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	915 break;
265 c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	916 case 'n':
c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	917 z80_enabled = 0;
c6d12878ea93 Add -n flag for disabling the Z80 core Mike Pavone <pavone@retrodev.com> parents: 264 diff changeset	918 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	919 default:
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	920 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	921 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	922 }
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	923 } 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	924 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	925 } 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	926 height = atoi(argv[i]);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	927 }
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	928 }
184 ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	929 width = width < 320 ? 320 : width;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger Mike Pavone <pavone@retrodev.com> parents: 166 diff changeset	930 height = height < 240 ? (width/320) * 240 : height;
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	931 if (!headless) {
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	932 render_init(width, height);
2b1c2c28b261 Added headless flag to avoid initializing SDL and opening a window when running tests. Mike Pavone <pavone@retrodev.com> parents: 211 diff changeset	933 }
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	934 vdp_context v_context;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	935
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	936 init_vdp_context(&v_context);
260 625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	937
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	938 z80_context z_context;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	939 x86_z80_options z_opts;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	940 init_x86_z80_opts(&z_opts);
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	941 init_z80_context(&z_context, &z_opts);
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	942 z_context.next_context = &v_context;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	943 z_context.mem_pointers[0] = z80_ram;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	944 z_context.sync_cycle = z_context.target_cycle = MCLKS_PER_FRAME/MCLKS_PER_Z80;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	945 z_context.int_cycle = CYCLE_NEVER;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	946 z_context.mem_pointers[1] = z_context.mem_pointers[2] = (uint8_t *)cart;
625f8e4d5fd2 Initial stab at integartiong Z80 core Mike Pavone <pavone@retrodev.com> parents: 215 diff changeset	947
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	948 init_run_cpu(&v_context, &z_context, debug, address_log);
88 c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	949 return 0;
c339559f1d4f Forgot to add blastem main file earlier Mike Pavone <pavone@retrodev.com> parents: diff changeset	950 }

Mercurial > repos > blastem

annotate blastem.c @ 266:376df762ddf5