void sachen_tca01_init(int hard)
{
read4 = mem_getread(4);
mem_setread(4,read_reg);
mem_setread(5,read_reg);
mem_setprg32(8,0);
mem_setchr8(0,0);
}
static void reset(int hard)
{
read4 = mem_getread(4);
mem_setread(4,read);
mem_setread(5,read);
mem_setprg32(8,0);
mem_setchr8(0,0);
}
void mapper90_init(int r)
{
int i;
mem_setread(0x5,mapper90_read_mul);
mem_setwrite(0x5,mapper90_write_mul);
mem_setwrite(0x8,mapper90_write_prg);
mem_setwrite(0x9,mapper90_write_chrlo);
mem_setwrite(0xA,mapper90_write_chrhi);
mem_setwrite(0xB,mapper90_write_nt);
mem_setwrite(0xC,mapper90_write_irq);
mem_setwrite(0xD,mapper90_write_control);
for(i=0;i<8;i++) {
prg[i & 3] = 0;
chrlo[i] = 0;
chrhi[i] = 0;
nt[i & 3] = 0;
}
bankmode = 0;
mul[0] = mul[1] = 0;
onebyte = 0;
irqenabled = 0;
irqmode = 0;
irqxor = 0;
irqlo = irqhi = 0;
mirror = 0;
revision = r;
syncprg();
syncchr();
syncnt();
}
void nes_reset(int hard)
{
int i;
if(nes->rom == 0)
return;
//set default read/write handlers
for(i=0;i<16;i++) {
mem_setread(i,0);
mem_setwrite(i,0);
}
//set rom read handlers (mappers might use these)
for(i=8;i<16;i++)
mem_setread(i,nes_read_rom);
//ram
mem_setreadptr(0,nes->ram);
mem_setwriteptr(0,nes->ram);
mem_setreadptr(1,nes->ram);
mem_setwriteptr(1,nes->ram);
//ppu
mem_setread(2,ppu_read);
mem_setwrite(2,ppu_write);
mem_setread(3,ppu_read);
mem_setwrite(3,ppu_write);
//apu
mem_setread(4,nes_read_4000);
mem_setwrite(4,nes_write_4000);
//mapper will set its read/write handlers
nes->mapper->reset(hard);
nes->frame_irqmode = 0;
apu_reset(hard);
ppu_reset();
dead6502_reset();
if(hard) {
memset(nes->ram,0,0x800);
for(i=0;i<32;i++)
pal_write(i,startup_pal[i]);
}
log_message("nes reset ok\n");
}
