repos/blastem: sms.c annotate

annotate sms.c @ 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

author	Michael Pavone <pavone@retrodev.com>
date	Wed, 28 Dec 2016 20:39:27 -0800
parents	6b5c92b6205c
children	7e199bebde2f

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) {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	15 sms->io.ports[0].control = ~(value << 5 & 0x60);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	16 sms->io.ports[1].control = ~(value << 3 & 0x60);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	17 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	18 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	19 } 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	20 //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	21 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	22 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	23 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	24
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	25 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	26 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	27 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	28 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	29 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	30 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	31 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	32 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	33 } 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	34 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	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 }
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 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	39 {
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 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	41 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	42 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	43 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	44 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	45 }
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 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	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 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	50 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	51 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	52 }
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
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 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	55 {
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 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	57 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	58 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	59 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	60 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	61 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	62 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	63 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	64 } 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	65 return vdp_data_port_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	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 }
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
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 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	70 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	71 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	72 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	73 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	74 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	75 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	76 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	77 } 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	78 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	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 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	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
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 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	84 {
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 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	86 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	87 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	88 uint8_t port_a = io_data_read(sms->io.ports, 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	89 uint8_t port_b = io_data_read(sms->io.ports, 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	90 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	91 }
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 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	93 uint8_t port_a = io_data_read(sms->io.ports, 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	94 uint8_t port_b = io_data_read(sms->io.ports, 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	95 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	96 }
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 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	98 }
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
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	100 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	101 {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	102 {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	103 {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	104 {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	105 };
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
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 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	108 {
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 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	110 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	111 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	112
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	113 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	114 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	115
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	116 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	117 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	118 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	119 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	120 uint32_t target_cycle = sms->z80->current_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	121 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	122 {
1129 6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	123 if (system->enter_debugger && sms->z80->pc) {
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	124 system->enter_debugger = 0;
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	125 zdebugger(sms->z80, sms->z80->pc);
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	126 }
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	127 z80_run(sms->z80, 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	128 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	129 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	130 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	131 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	132 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	133 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	134 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	135 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	136 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	137 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	138 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	139 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	140 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	141 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	142 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	143 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	144 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	145
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	146 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	147 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	148 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	149 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	150
1129 6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	151 if (system->enter_debugger) {
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	152 system->enter_debugger = 0;
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	153 zinsert_breakpoint(sms->z80, 0, (uint8_t *)zdebugger);
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	154 }
6b5c92b6205c Enabled Z80 debugger in PBC mode Michael Pavone <pavone@retrodev.com> parents: 1126 diff changeset	155
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	156 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	157 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	158
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	159 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	160 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	161
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	162 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	163 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	164 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	165 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	166 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	167 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	168 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	169 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	170 }
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	171
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	172 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	173 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	174 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	175 }
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
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 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	178 {
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 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	180 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	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
1120 e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	183 static void inc_debug_mode(system_header *system)
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	184 {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	185 sms_context sms = (sms_context )system;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	186 sms->vdp->debug++;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	187 if (sms->vdp->debug == 7) {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	188 sms->vdp->debug = 0;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	189 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	190 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	191
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	192 static void inc_debug_pal(system_header *system)
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	193 {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	194 sms_context sms = (sms_context )system;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	195 sms->vdp->debug_pal++;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	196 if (sms->vdp->debug_pal == 4) {
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	197 sms->vdp->debug_pal = 0;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	198 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	199 }
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	200
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	201 sms_context alloc_configure_sms(void rom, uint32_t rom_size, void extra_rom, uint32_t extra_rom_size, uint32_t opts, uint8_t force_region, rom_info 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	202 {
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	203 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	204 sms_context *sms = calloc(1, sizeof(sms_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	205 rom_size = nearest_pow2(rom_size);
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	206 uint32_t mask = rom_size >= 0xC000 ? 0xFFFF : rom_size-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	207 memmap_chunk memory_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	208 {0x0000, 0xC000, rom_size-1, 0, 0, MMAP_READ, rom, NULL, NULL, NULL, 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	209 {0xC000, 0x10000, sizeof(sms->ram)-1, 0, 0, MMAP_READ\|MMAP_WRITE\|MMAP_CODE, sms->ram, NULL, NULL, NULL, 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	210 };
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 info_out->map = malloc(sizeof(memory_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	212 memcpy(info_out->map, memory_map, sizeof(memory_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	213 z80_options *zopts = malloc(sizeof(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	214 init_z80_opts(zopts, info_out->map, 2, 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	215 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	216 sms->z80->system = 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	217
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 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	219 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	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 //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	222 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	223
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 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	225 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	226
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 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	228 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	229 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	230
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	231 info_out->save_type = SAVE_NONE;
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	232 info_out->name = strdup("Master System Game");
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	233
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	234 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	235
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 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	237 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	238 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	239 //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	240 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	241 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	242 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	243 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	244 sms->header.request_exit = request_exit;
1120 e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	245 sms->header.inc_debug_mode = inc_debug_mode;
e9369d6f0101 Somewhat broken implementation of Mode 4 Michael Pavone <pavone@retrodev.com> parents: 1119 diff changeset	246 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	247
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful. Michael Pavone <pavone@retrodev.com> parents: diff changeset	248 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	249 }

Mercurial > repos > blastem

annotate sms.c @ 1130:8f14767661fa