int load_state_from_mem(void *stor)
{
int i;
/* Initialize everything */
z80_reset(0);
z80_set_irq_callback(sms_irq_callback);
system_reset();
if(snd.enabled)
sound_reset();
//davex: header is not saved in memory state
// Load VDP context
memcpy(&vdp, stor, sizeof(vdp_t)); //VDP context
stor += sizeof(vdp_t);
//Load SMS context (1/3)
memcpy(&sms, stor, sizeof(sms_t) );
stor += sizeof(sms_t);
//Load SMS context (2/3)
memcpy(&cart.fcr[0],stor, 1 );
stor += 1;
memcpy(&cart.fcr[1],stor, 1 );
stor += 1;
memcpy(&cart.fcr[2],stor, 1 );
stor += 1;
memcpy(&cart.fcr[3],stor, 1 );
stor += 1;
//Load SMS context (3/3)
memcpy(&cart.sram, stor, 0x8000);
stor += 0x8000;
// Load Z80 context
memcpy(Z80_Context, stor, sizeof(Z80_Regs) );
stor += sizeof(Z80_Regs);
memcpy(&after_EI, stor, sizeof(int) );
stor += sizeof(int);
// Load YM2413 context
FM_SetContext(stor);
stor += FM_GetContextSize();
// Load SN76489 context
SN76489_SetContext(0, stor);
/* Restore callbacks */
z80_set_irq_callback(sms_irq_callback);
for(i = 0x00; i <= 0x2F; i++)
{
cpu_readmap[i] = &cart.rom[(i & 0x1F) << 10];
cpu_writemap[i] = dummy_write;
}
for(i = 0x30; i <= 0x3F; i++)
{
cpu_readmap[i] = &sms.wram[(i & 0x07) << 10];
cpu_writemap[i] = &sms.wram[(i & 0x07) << 10];
}
sms_mapper_w(3, cart.fcr[3]);
sms_mapper_w(2, cart.fcr[2]);
sms_mapper_w(1, cart.fcr[1]);
sms_mapper_w(0, cart.fcr[0]);
/* Force full pattern cache update */
bg_list_index = 0x200;
for(i = 0; i < 0x200; i++)
{
bg_name_list[i] = i;
bg_name_dirty[i] = -1;
}
/* Restore palette */
for(i = 0; i < PALETTE_SIZE; i++)
palette_sync(i, 1);
viewport_check();
return 1;
}
void system_load_state(void *fd)
{
int i;
uint8 reg[0x40];
/* Initialize everything */
cpu_reset();
system_reset();
/* Load VDP context */
fread(&vdp, sizeof(t_vdp), 1, fd);
/* Load SMS context */
fread(&sms, sizeof(t_sms), 1, fd);
/* Load Z80 context */
fread(Z80_Context, sizeof(Z80_Regs), 1, fd);
fread(&after_EI, sizeof(int), 1, fd);
/* Load YM2413 registers */
fread(reg, 0x40, 1, fd);
/* Load SN76489 context */
fread(&sn[0], sizeof(t_SN76496), 1, fd);
/* Restore callbacks */
z80_set_irq_callback(sms_irq_callback);
cpu_readmap[0] = cart.rom + 0x0000; /* 0000-3FFF */
cpu_readmap[1] = cart.rom + 0x2000;
cpu_readmap[2] = cart.rom + 0x4000; /* 4000-7FFF */
cpu_readmap[3] = cart.rom + 0x6000;
cpu_readmap[4] = cart.rom + 0x0000; /* 0000-3FFF */
cpu_readmap[5] = cart.rom + 0x2000;
cpu_readmap[6] = sms.ram;
cpu_readmap[7] = sms.ram;
cpu_writemap[0] = sms.dummy;
cpu_writemap[1] = sms.dummy;
cpu_writemap[2] = sms.dummy;
cpu_writemap[3] = sms.dummy;
cpu_writemap[4] = sms.dummy;
cpu_writemap[5] = sms.dummy;
cpu_writemap[6] = sms.ram;
cpu_writemap[7] = sms.ram;
sms_mapper_w(3, sms.fcr[3]);
sms_mapper_w(2, sms.fcr[2]);
sms_mapper_w(1, sms.fcr[1]);
sms_mapper_w(0, sms.fcr[0]);
/* Force full pattern cache update */
is_vram_dirty = 1;
memset(vram_dirty, 1, 0x200);
/* Restore palette */
for(i = 0; i < PALETTE_SIZE; i += 1)
palette_sync(i);
/* Restore sound state */
if(snd.enabled)
{
/* Clear YM2413 context */
OPLL_reset(opll) ;
OPLL_reset_patch(opll,0) ; /* if use default voice data. */
/* Restore rhythm enable first */
ym2413_write(0, 0, 0x0E);
ym2413_write(0, 1, reg[0x0E]);
/* User instrument settings */
for(i = 0x00; i <= 0x07; i += 1)
{
ym2413_write(0, 0, i);
ym2413_write(0, 1, reg[i]);
}
/* Channel frequency */
for(i = 0x10; i <= 0x18; i += 1)
{
ym2413_write(0, 0, i);
ym2413_write(0, 1, reg[i]);
}
/* Channel frequency + ctrl. */
for(i = 0x20; i <= 0x28; i += 1)
{
ym2413_write(0, 0, i);
ym2413_write(0, 1, reg[i]);
}
/* Instrument and volume settings */
for(i = 0x30; i <= 0x38; i += 1)
{
ym2413_write(0, 0, i);
ym2413_write(0, 1, reg[i]);
}
}
}
void system_load_state(void *fd)
{
int i;
uint8 *buf;
char id[4];
uint16 version;
/* Initialize everything */
z80_reset(0);
z80_set_irq_callback(sms_irq_callback);
system_reset();
if(snd.enabled)
sound_reset();
/* Read header */
fread(id, 4, 1, fd);
fread(&version, 2, 1, fd);
/* Load VDP context */
fread(&vdp, sizeof(vdp_t), 1, fd);
/* Load SMS context */
fread(&sms, sizeof(sms_t), 1, fd);
cart.fcr[0] = fgetc(fd);
cart.fcr[1] = fgetc(fd);
cart.fcr[2] = fgetc(fd);
cart.fcr[3] = fgetc(fd);
fread(cart.sram, 0x8000, 1, fd);
/* Load Z80 context */
fread(Z80_Context, sizeof(Z80_Regs), 1, fd);
fread(&after_EI, sizeof(int), 1, fd);
/* Load YM2413 context */
buf = malloc(FM_GetContextSize());
fread(buf, FM_GetContextSize(), 1, fd);
FM_SetContext(buf);
free(buf);
/* Load SN76489 context */
buf = malloc(SN76489_GetContextSize());
fread(buf, SN76489_GetContextSize(), 1, fd);
SN76489_SetContext(0, buf);
free(buf);
/* Restore callbacks */
z80_set_irq_callback(sms_irq_callback);
for(i = 0x00; i <= 0x2F; i++)
{
cpu_readmap[i] = &cart.rom[(i & 0x1F) << 10];
cpu_writemap[i] = dummy_write;
}
for(i = 0x30; i <= 0x3F; i++)
{
cpu_readmap[i] = &sms.wram[(i & 0x07) << 10];
cpu_writemap[i] = &sms.wram[(i & 0x07) << 10];
}
sms_mapper_w(3, cart.fcr[3]);
sms_mapper_w(2, cart.fcr[2]);
sms_mapper_w(1, cart.fcr[1]);
sms_mapper_w(0, cart.fcr[0]);
/* Force full pattern cache update */
bg_list_index = 0x200;
for(i = 0; i < 0x200; i++)
{
bg_name_list[i] = i;
bg_name_dirty[i] = -1;
}
/* Restore palette */
for(i = 0; i < PALETTE_SIZE; i++)
palette_sync(i, 1);
viewport_check();
}
