repos/blastem: sms.c annotate

annotate sms.c @ 1298:d5a47597b61f

Prevent blowing past our native translated instruction size of 255 bytes when translating movem with a large register list. Fixes bug in which Fantastic Dizzy was completely broken on 32-bit builds

author	Michael Pavone <pavone@retrodev.com>
date	Sat, 25 Mar 2017 00:21:32 -0700
parents	5ee6b6345ea9
children	071e761bcdcf

rev	line source
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	1 #include <string.h>
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	2 #include <stdlib.h>
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	3 #include <stddef.h>
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	4 #include "sms.h"
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	5 #include "blastem.h"
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	6 #include "render.h"
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	7 #include "util.h"
1129 6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	8 #include "debug.h"
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	9
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	10 static void memory_io_write(uint32_t location, void vcontext, uint8_t value)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	11 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	12 z80_context *z80 = vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	13 sms_context *sms = z80->system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	14 if (location & 1) {
1154 c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	15 uint8_t fuzzy_ctrl_0 = sms->io.ports[0].control, fuzzy_ctrl_1 = sms->io.ports[1].control;
1143 d4d770cfbc62 Fix handling of IO control writes in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1142 diff changeset	16 sms->io.ports[0].control = (~value) << 5 & 0x60;
1154 c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	17 fuzzy_ctrl_0 \|= sms->io.ports[0].control;
1143 d4d770cfbc62 Fix handling of IO control writes in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1142 diff changeset	18 sms->io.ports[1].control = (~value) << 3 & 0x60;
1154 c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	19 fuzzy_ctrl_1 \|= sms->io.ports[1].control;
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	20 if (
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	21 (fuzzy_ctrl_0 & 0x40 & (sms->io.ports[0].output ^ (value << 1)) & (value << 1))
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	22 \|\| (fuzzy_ctrl_0 & 0x40 & (sms->io.ports[1].output ^ (value >> 1)) & (value >> 1))
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	23 ) {
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	24 //TH is an output and it went from 0 -> 1
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	25 vdp_run_context(sms->vdp, z80->current_cycle);
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	26 vdp_latch_hv(sms->vdp);
c83ec07ddbac Implemented Mode 4 H conter latching Michael Pavone <pavone@retrodev.com> parents: 1149 diff changeset	27 }
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	28 io_data_write(sms->io.ports, value << 1, z80->current_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	29 io_data_write(sms->io.ports + 1, value >> 1, z80->current_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	30 } else {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	31 //TODO: memory control write
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	32 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	33 return vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	34 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	35
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	36 static uint8_t hv_read(uint32_t location, void *vcontext)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	37 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	38 z80_context *z80 = vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	39 sms_context *sms = z80->system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	40 vdp_run_context(sms->vdp, z80->current_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	41 uint16_t hv = vdp_hv_counter_read(sms->vdp);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	42 if (location & 1) {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	43 return hv;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	44 } else {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	45 return hv >> 8;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	46 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	47 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	48
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	49 static void sms_psg_write(uint32_t location, void vcontext, uint8_t value)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	50 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	51 z80_context *z80 = vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	52 sms_context *sms = z80->system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	53 psg_run(sms->psg, z80->current_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	54 psg_write(sms->psg, value);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	55 return vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	56 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	57
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	58 static void update_interrupts(sms_context *sms)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	59 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	60 uint32_t vint = vdp_next_vint(sms->vdp);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	61 uint32_t hint = vdp_next_hint(sms->vdp);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	62 sms->z80->int_pulse_start = vint < hint ? vint : hint;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	63 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	64
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	65 static uint8_t vdp_read(uint32_t location, void *vcontext)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	66 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	67 z80_context *z80 = vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	68 sms_context *sms = z80->system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	69 vdp_run_context(sms->vdp, z80->current_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	70 if (location & 1) {
1126 63cd87d910cc Clear interrupt status flags after getting the status register value rather than before Michael Pavone <pavone@retrodev.com> parents: 1120 diff changeset	71 uint8_t ret = vdp_control_port_read(sms->vdp);
1119 55ea7f9a4e92 Fix clearing of interrupt pending flags on control port read in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1117 diff changeset	72 sms->vdp->flags2 &= ~(FLAG2_VINT_PENDING\|FLAG2_HINT_PENDING);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	73 update_interrupts(sms);
1126 63cd87d910cc Clear interrupt status flags after getting the status register value rather than before Michael Pavone <pavone@retrodev.com> parents: 1120 diff changeset	74 return ret;
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	75 } else {
1149 6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	76 return vdp_data_port_read_pbc(sms->vdp);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	77 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	78 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	79
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	80 static void vdp_write(uint32_t location, void vcontext, uint8_t value)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	81 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	82 z80_context *z80 = vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	83 sms_context *sms = z80->system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	84 vdp_run_context(sms->vdp, z80->current_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	85 if (location & 1) {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	86 vdp_control_port_write_pbc(sms->vdp, value);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	87 update_interrupts(sms);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	88 } else {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	89 vdp_data_port_write_pbc(sms->vdp, value);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	90 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	91 return vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	92 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	93
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	94 static uint8_t io_read(uint32_t location, void *vcontext)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	95 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	96 z80_context *z80 = vcontext;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	97 sms_context *sms = z80->system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	98 if (location == 0xC0 \|\| location == 0xDC) {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	99 uint8_t port_a = io_data_read(sms->io.ports, z80->current_cycle);
1148 80ef49539550 Fix reading from second controller port in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1143 diff changeset	100 uint8_t port_b = io_data_read(sms->io.ports+1, z80->current_cycle);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	101 return (port_a & 0x3F) \| (port_b << 6);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	102 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	103 if (location == 0xC1 \|\| location == 0xDD) {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	104 uint8_t port_a = io_data_read(sms->io.ports, z80->current_cycle);
1148 80ef49539550 Fix reading from second controller port in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1143 diff changeset	105 uint8_t port_b = io_data_read(sms->io.ports+1, z80->current_cycle);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	106 return (port_a & 0x40) \| (port_b >> 2 & 0xF) \| (port_b << 1 & 0x80) \| 0x10;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	107 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	108 return 0xFF;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	109 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	110
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	111 static void mapper_write(uint32_t location, void vcontext, uint8_t value)
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	112 {
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	113 z80_context *z80 = vcontext;
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	114 sms_context *sms = z80->system;
1142 5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	115 void *old_value;
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	116 location &= 3;
1162 c4ea535cf57e Forgot that the expansion to 32-bit values for 16-bit addresses is not done when calling a C function to handle a memory operation. Mask on location in mapper_write was needed afterall Michael Pavone <pavone@retrodev.com> parents: 1154 diff changeset	117 sms->ram[0x1FFC + location] = value;
1149 6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	118 sms->bank_regs[location] = value;
1142 5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	119 if (location) {
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	120 uint32_t idx = location - 1;
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	121 old_value = z80->mem_pointers[idx];
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	122 z80->mem_pointers[idx] = sms->rom + (value << 14 & (sms->rom_size-1));
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	123 if (old_value != z80->mem_pointers[idx]) {
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	124 //invalidate any code we translated for the relevant bank
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	125 z80_invalidate_code_range(z80, idx ? idx * 0x4000 : 0x400, idx * 0x4000 + 0x4000);
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	126 }
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	127 } else {
1149 6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	128 old_value = z80->mem_pointers[2];
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	129 if (value & 8) {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	130 //cartridge RAM is enabled
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	131 z80->mem_pointers[2] = sms->cart_ram + (value & 4 ? (SMS_CART_RAM_SIZE/2) : 0);
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	132 } else {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	133 //cartridge RAM is disabled
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	134 z80->mem_pointers[2] = sms->rom + (sms->bank_regs[3] << 14 & (sms->rom_size-1));
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	135 }
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	136 if (old_value != z80->mem_pointers[2]) {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	137 //invalidate any code we translated for the relevant bank
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	138 z80_invalidate_code_range(z80, 0x8000, 0xC000);
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	139 }
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	140 }
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	141 return vcontext;
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	142 }
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	143
1149 6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	144 static void cart_ram_write(uint32_t location, void vcontext, uint8_t value)
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	145 {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	146 z80_context *z80 = vcontext;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	147 sms_context *sms = z80->system;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	148 if (sms->bank_regs[0] & 8) {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	149 //cartridge RAM is enabled
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	150 location &= 0x3FFF;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	151 z80->mem_pointers[2][location] = value;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	152 z80_handle_code_write(0x8000 + location, z80);
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	153 }
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	154 return vcontext;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	155 }
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	156
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	157 uint8_t debug_commands(system_header system, char input_buf)
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	158 {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	159 sms_context sms = (sms_context )system;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	160 switch(input_buf[0])
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	161 {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	162 case 'v':
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	163 if (input_buf[1] == 'r') {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	164 vdp_print_reg_explain(sms->vdp);
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	165 } else if (input_buf[1] == 's') {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	166 vdp_print_sprite_table(sms->vdp);
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	167 } else {
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	168 return 0;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	169 }
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	170 break;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	171 }
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	172 return 1;
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	173 }
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	174
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	175 static memmap_chunk io_map[] = {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	176 {0x00, 0x40, 0xFF, 0, 0, 0, NULL, NULL, NULL, NULL, memory_io_write},
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	177 {0x40, 0x80, 0xFF, 0, 0, 0, NULL, NULL, NULL, hv_read, sms_psg_write},
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	178 {0x80, 0xC0, 0xFF, 0, 0, 0, NULL, NULL, NULL, vdp_read, vdp_write},
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	179 {0xC0, 0x100,0xFF, 0, 0, 0, NULL, NULL, NULL, io_read, NULL}
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	180 };
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	181
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	182 static void set_speed_percent(system_header * system, uint32_t percent)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	183 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	184 sms_context context = (sms_context )system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	185 uint32_t old_clock = context->master_clock;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	186 context->master_clock = ((uint64_t)context->normal_clock * (uint64_t)percent) / 100;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	187
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	188 psg_adjust_master_clock(context->psg, context->master_clock);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	189 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	190
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	191 static void run_sms(system_header *system)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	192 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	193 render_disable_ym();
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	194 sms_context sms = (sms_context )system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	195 uint32_t target_cycle = sms->z80->current_cycle + 3420*262;
1184 b1147418254a Overscan is now configurable Michael Pavone <pavone@retrodev.com> parents: 1162 diff changeset	196 //TODO: PAL support
b1147418254a Overscan is now configurable Michael Pavone <pavone@retrodev.com> parents: 1162 diff changeset	197 render_set_video_standard(VID_NTSC);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	198 while (!sms->should_return)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	199 {
1129 6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	200 if (system->enter_debugger && sms->z80->pc) {
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	201 system->enter_debugger = 0;
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	202 zdebugger(sms->z80, sms->z80->pc);
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	203 }
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	204 z80_run(sms->z80, target_cycle);
1209 5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	205 if (sms->z80->reset) {
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	206 z80_clear_reset(sms->z80, sms->z80->current_cycle + 128*15);
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	207 }
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	208 target_cycle = sms->z80->current_cycle;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	209 vdp_run_context(sms->vdp, target_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	210 psg_run(sms->psg, target_cycle);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	211 target_cycle += 3420*262;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	212 if (target_cycle > 0x10000000) {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	213 uint32_t adjust = sms->z80->current_cycle - 34202622;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	214 io_adjust_cycles(sms->io.ports, sms->z80->current_cycle, adjust);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	215 io_adjust_cycles(sms->io.ports+1, sms->z80->current_cycle, adjust);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	216 z80_adjust_cycles(sms->z80, adjust);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	217 vdp_adjust_cycles(sms->vdp, adjust);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	218 sms->psg->cycles -= adjust;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	219 target_cycle -= adjust;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	220 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	221 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	222 sms->should_return = 0;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	223 render_enable_ym();
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	224 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	225
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	226 static void start_sms(system_header system, char statefile)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	227 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	228 sms_context sms = (sms_context )system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	229 set_keybindings(&sms->io);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	230
1129 6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	231 if (system->enter_debugger) {
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	232 system->enter_debugger = 0;
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	233 zinsert_breakpoint(sms->z80, 0, (uint8_t *)zdebugger);
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	234 }
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	235
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	236 z80_assert_reset(sms->z80, 0);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	237 z80_clear_reset(sms->z80, 128*15);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	238
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	239 run_sms(system);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	240 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	241
1209 5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	242 static void soft_reset(system_header *system)
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	243 {
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	244 sms_context sms = (sms_context )system;
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	245 z80_assert_reset(sms->z80, sms->z80->current_cycle);
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	246 sms->z80->target_cycle = sms->z80->sync_cycle = sms->z80->current_cycle;
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	247 }
5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	248
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	249 static void free_sms(system_header *system)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	250 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	251 sms_context sms = (sms_context )system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	252 vdp_free(sms->vdp);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	253 z80_options_free(sms->z80->options);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	254 free(sms->z80);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	255 psg_free(sms->psg);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	256 free(sms);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	257 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	258
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	259 static uint16_t get_open_bus_value(system_header *system)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	260 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	261 return 0xFFFF;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	262 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	263
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	264 static void request_exit(system_header *system)
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	265 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	266 sms_context sms = (sms_context )system;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	267 sms->should_return = 1;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	268 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	269
1120 e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	270 static void inc_debug_mode(system_header *system)
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	271 {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	272 sms_context sms = (sms_context )system;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	273 sms->vdp->debug++;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	274 if (sms->vdp->debug == 7) {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	275 sms->vdp->debug = 0;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	276 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	277 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	278
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	279 static void inc_debug_pal(system_header *system)
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	280 {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	281 sms_context sms = (sms_context )system;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	282 sms->vdp->debug_pal++;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	283 if (sms->vdp->debug_pal == 4) {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	284 sms->vdp->debug_pal = 0;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	285 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	286 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	287
1201 aee2177a1630 Use filename for game title in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1184 diff changeset	288 sms_context alloc_configure_sms(system_media media, uint32_t opts, uint8_t force_region, rom_info *info_out)
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	289 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	290 memset(info_out, 0, sizeof(*info_out));
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	291 sms_context *sms = calloc(1, sizeof(sms_context));
1201 aee2177a1630 Use filename for game title in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1184 diff changeset	292 uint32_t rom_size = nearest_pow2(media->size);
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	293 memmap_chunk memory_map[6];
1201 aee2177a1630 Use filename for game title in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1184 diff changeset	294 if (media->size > 0xC000) {
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	295 info_out->map_chunks = 6;
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	296 uint8_t *ram_reg_overlap = sms->ram + sizeof(sms->ram) - 4;
1201 aee2177a1630 Use filename for game title in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1184 diff changeset	297 memory_map[0] = (memmap_chunk){0x0000, 0x0400, 0xFFFF, 0, 0, MMAP_READ, media->buffer, NULL, NULL, NULL, NULL};
1142 5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	298 memory_map[1] = (memmap_chunk){0x0400, 0x4000, 0xFFFF, 0, 0, MMAP_READ\|MMAP_PTR_IDX\|MMAP_CODE, NULL, NULL, NULL, NULL, NULL};
5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	299 memory_map[2] = (memmap_chunk){0x4000, 0x8000, 0x3FFF, 0, 1, MMAP_READ\|MMAP_PTR_IDX\|MMAP_CODE, NULL, NULL, NULL, NULL, NULL};
1149 6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	300 memory_map[3] = (memmap_chunk){0x8000, 0xC000, 0x3FFF, 0, 2, MMAP_READ\|MMAP_PTR_IDX\|MMAP_CODE, NULL, NULL, NULL, NULL, cart_ram_write};
1142 5c8b1c33ca10 Invalidate translated code on a cartridge bank change in SMS mode. Fix handling of bank 0 Michael Pavone <pavone@retrodev.com> parents: 1141 diff changeset	301 memory_map[4] = (memmap_chunk){0xC000, 0xFFFC, sizeof(sms->ram)-1, 0, 0, MMAP_READ\|MMAP_WRITE\|MMAP_CODE, sms->ram, NULL, NULL, NULL, NULL};
1162 c4ea535cf57e Forgot that the expansion to 32-bit values for 16-bit addresses is not done when calling a C function to handle a memory operation. Mask on location in mapper_write was needed afterall Michael Pavone <pavone@retrodev.com> parents: 1154 diff changeset	302 memory_map[5] = (memmap_chunk){0xFFFC, 0x10000, 0x0003, 0, 0, MMAP_READ, ram_reg_overlap, NULL, NULL, NULL, mapper_write};
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	303 } else {
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	304 info_out->map_chunks = 2;
1201 aee2177a1630 Use filename for game title in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1184 diff changeset	305 memory_map[0] = (memmap_chunk){0x0000, 0xC000, rom_size-1, 0, 0, MMAP_READ, media->buffer, NULL, NULL, NULL, NULL};
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	306 memory_map[1] = (memmap_chunk){0xC000, 0x10000, sizeof(sms->ram)-1, 0, 0, MMAP_READ\|MMAP_WRITE\|MMAP_CODE, sms->ram, NULL, NULL, NULL, NULL};
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	307 };
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	308 info_out->map = malloc(sizeof(memmap_chunk) * info_out->map_chunks);
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	309 memcpy(info_out->map, memory_map, sizeof(memmap_chunk) * info_out->map_chunks);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	310 z80_options *zopts = malloc(sizeof(z80_options));
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	311 init_z80_opts(zopts, info_out->map, info_out->map_chunks, io_map, 4, 15, 0xFF);
1130 8f14767661fa Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores Michael Pavone <pavone@retrodev.com> parents: 1129 diff changeset	312 sms->z80 = init_z80_context(zopts);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	313 sms->z80->system = sms;
1149 6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions Michael Pavone <pavone@retrodev.com> parents: 1148 diff changeset	314 sms->z80->options->gen.debug_cmd_handler = debug_commands;
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	315
1201 aee2177a1630 Use filename for game title in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1184 diff changeset	316 sms->rom = media->buffer;
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	317 sms->rom_size = rom_size;
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	318 if (info_out->map_chunks > 2) {
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	319 sms->z80->mem_pointers[0] = sms->rom;
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	320 sms->z80->mem_pointers[1] = sms->rom + 0x4000;
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	321 sms->z80->mem_pointers[2] = sms->rom + 0x8000;
1162 c4ea535cf57e Forgot that the expansion to 32-bit values for 16-bit addresses is not done when calling a C function to handle a memory operation. Mask on location in mapper_write was needed afterall Michael Pavone <pavone@retrodev.com> parents: 1154 diff changeset	322 sms->bank_regs[1] = 0;
c4ea535cf57e Forgot that the expansion to 32-bit values for 16-bit addresses is not done when calling a C function to handle a memory operation. Mask on location in mapper_write was needed afterall Michael Pavone <pavone@retrodev.com> parents: 1154 diff changeset	323 sms->bank_regs[2] = 0x4000 >> 14;
c4ea535cf57e Forgot that the expansion to 32-bit values for 16-bit addresses is not done when calling a C function to handle a memory operation. Mask on location in mapper_write was needed afterall Michael Pavone <pavone@retrodev.com> parents: 1154 diff changeset	324 sms->bank_regs[3] = 0x8000 >> 14;
1141 7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	325 }
7e199bebde2f Initial support for Sega's family of SMS mappers Michael Pavone <pavone@retrodev.com> parents: 1130 diff changeset	326
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	327 char * lowpass_cutoff_str = tern_find_path(config, "audio\0lowpass_cutoff\0").ptrval;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	328 uint32_t lowpass_cutoff = lowpass_cutoff_str ? atoi(lowpass_cutoff_str) : 3390;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	329
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	330 //TODO: Detect region and pick master clock based off of that
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	331 sms->normal_clock = sms->master_clock = 53693175;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	332
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	333 sms->psg = malloc(sizeof(psg_context));
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	334 psg_init(sms->psg, render_sample_rate(), sms->master_clock, 15*16, render_audio_buffer(), lowpass_cutoff);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	335
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	336 sms->vdp = malloc(sizeof(vdp_context));
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	337 init_vdp_context(sms->vdp, 0);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	338 sms->vdp->system = &sms->header;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	339
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	340 info_out->save_type = SAVE_NONE;
1201 aee2177a1630 Use filename for game title in SMS mode Michael Pavone <pavone@retrodev.com> parents: 1184 diff changeset	341 info_out->name = strdup(media->name);
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	342
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	343 setup_io_devices(config, info_out, &sms->io);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	344
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	345 sms->header.set_speed_percent = set_speed_percent;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	346 sms->header.start_context = start_sms;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	347 sms->header.resume_context = run_sms;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	348 //TODO: Fill in NULL values
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	349 sms->header.load_save = NULL;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	350 sms->header.persist_save = NULL;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	351 sms->header.free_context = free_sms;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	352 sms->header.get_open_bus_value = get_open_bus_value;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	353 sms->header.request_exit = request_exit;
1209 5ee6b6345ea9 Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode) Michael Pavone <pavone@retrodev.com> parents: 1201 diff changeset	354 sms->header.soft_reset = soft_reset;
1120 e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	355 sms->header.inc_debug_mode = inc_debug_mode;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	356 sms->header.inc_debug_pal = inc_debug_pal;
1117 928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	357
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	358 return sms;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	359 }

Mercurial > repos > blastem

annotate sms.c @ 1298:d5a47597b61f