void nes_reset(NES *nes)
{
joypad_reset(&(nes->pad));
mmc_reset (&(nes->mmc));
ppu_reset (&(nes->ppu));
apu_reset (&(nes->apu));
cpu_reset (&(nes->cpu));
}
void reset(bool hard_reset)
{
if(hard_reset) {
memset(cpu_->mem_page[0], 0, NES_RAMSIZE);
if(rominfo_->vram) {
mem_trash_(rominfo_->vram, 0x2000 * rominfo_->vram_banks);
}
}
apu_reset();
ppu_reset(hard_reset == true ? 1 : 0);
mmc_reset();
nes6502_reset();
scanline_ = 241;
}
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");
}
// 内部函数实现
static void nes_do_reset(NES *nes)
{
// mmc need reset first
mmc_reset(&(nes->mmc));
// reset cpu & ppu & apu
cpu_reset(&(nes->cpu));
ppu_reset(&(nes->ppu));
apu_reset(&(nes->apu));
// reset joypad
joypad_reset(&(nes->pad));
// reset replay
replay_reset(&(nes->replay));
// restart ndb
ndb_set_debug(&(nes->ndb), NDB_DEBUG_MODE_RESTART);
}