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player/Project/Src/NES/mapper/065.cpp
2025-06-27 00:32:57 +08:00

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#include "nes_mapper.h"
/////////////////////////////////////////////////////////////////////
// Mapper 65
void MAP65_Reset()
{
// patch = 0;
// // for Kaiketsu Yanchamaru 3
// if(parent_NES->crc32() == 0xe30b7f64) // Kaiketsu Yanchamaru 3 - Taiketsu! Zouringen
// {
// patch = 1;
// }
// // set CPU bank pointers
// set_CPU_banks(0,1,num_8k_ROM_banks-2,num_8k_ROM_banks-1);
// set PPU bank pointers
if(num_1k_VROM_banks)
{
set_PPU_banks(0,1,2,3,4,5,6,7);
}
MAPx->irq_enabled = 0;
MAPx->irq_counter = 0;
}
void MAP65_MemoryWrite(uint16 addr, uint8 data)
{
switch(addr)
{
case 0x8000:
{
set_CPU_bank4(data);
}
break;
case 0x9000:
{
//if(!patch)
{
if(data & 0x40)
{
set_mirroring(0,1,0,1);//´¹Ö±¾µÏñInfoNES_Mirroring( 1 ); //0101
//set_mirroring(NES_PPU::MIRROR_VERT);
}
else
{
set_mirroring(0,0,1,1);//ˮƽ¾µÏñInfoNES_Mirroring( 0 ); //0011
//set_mirroring(NES_PPU::MIRROR_HORIZ);
}
}
}
break;
case 0x9001:
{
// if(patch)
// {
// if(data & 0x80)
// {
// set_mirroring(NES_PPU::MIRROR_HORIZ);
// }
// else
// {
// set_mirroring(NES_PPU::MIRROR_VERT);
// }
// }
}
break;
case 0x9003:
{
//if(!patch)
{
MAPx->irq_enabled = data & 0x80;
}
}
break;
case 0x9004:
{
//if(!patch)
{
MAPx->irq_counter = MAPx->irq_latch;
}
}
break;
case 0x9005:
{
// if(patch)
// {
// MAPx->irq_counter = (uint8)(data << 1);
// MAPx->irq_enabled = data;
// }
// else
{
MAPx->irq_latch = (MAPx->irq_latch & 0x00FF) | ((uint32)data << 8);
}
}
break;
case 0x9006:
{
// if(patch)
// {
// MAPx->irq_enabled = 1;
// }
// else
{
MAPx->irq_latch = (MAPx->irq_latch & 0xFF00) | data;
}
}
break;
case 0xB000:
{
set_PPU_bank0(data);
}
break;
case 0xB001:
{
set_PPU_bank1(data);
}
break;
case 0xB002:
{
set_PPU_bank2(data);
}
break;
case 0xB003:
{
set_PPU_bank3(data);
}
break;
case 0xB004:
{
set_PPU_bank4(data);
}
break;
case 0xB005:
{
set_PPU_bank5(data);
}
break;
case 0xB006:
{
set_PPU_bank6(data);
}
break;
case 0xB007:
{
set_PPU_bank7(data);
}
break;
case 0xA000:
{
set_CPU_bank5(data);
}
break;
case 0xC000:
{
set_CPU_bank6(data);
}
break;
}
}
void MAP65_HSync(int scanline)
{
if(MAPx->irq_enabled)
{
// if(patch)
// {
// if(MAPx->irq_counter == 0)
// {
// CPU_IRQ;
// MAPx->irq_enabled = 0;
// }
// else
// {
// MAPx->irq_counter--;
// }
// }
// else
{
if(MAPx->irq_counter <= 113)
{
CPU_IRQ;
MAPx->irq_enabled = 0;
MAPx->irq_counter = 0xFFFF;
}
else
{
MAPx->irq_counter -= 113;
}
}
}
}
void MAP65_Init()
{
NES_Mapper->Reset = MAP65_Reset;
NES_Mapper->Write = MAP65_MemoryWrite;
NES_Mapper->HSync = MAP65_HSync;
}