// read byte
public byte rb(ushort address)
{
if (biosActive && address < Address.Bios)
{
return(bios [address]);
}
if (address >= Address.Audio_L && address <= Address.Audio_H)
{
// return audio.rr(address);
return(0);
}
if ((address >= Address.RamBank_L) && (address <= Address.RamBank_H))
{
return(mbc.rrb((ushort)(address - Address.RamBank_L)));
}
byte[] memory;
ushort resolvedAddress;
ResolveMemoryAddress(address, out memory, out resolvedAddress);
return(memory [resolvedAddress]);
}
// read byte
public byte rb(ushort address)
{
if (biosActive && address < Address.Bios_M)
{
return(Bios [address]);
}
// switch(address & 0xF000) {
// case 0x0000:
// case 0x1000:
// case 0x2000:
// case 0x3000:
// // rom bank 0
// return mbc.rom[address];
//
// case 0x4000:
// case 0x5000:
// case 0x6000:
// case 0x7000:
// // rom banks 1 and higher
// return mbc.romBank[address - 0x4000];
//
// case 0x8000:
// case 0x9000:
// // working ram
// return vram [address - 0x8000];
//
// case 0xA000:
// case 0xB000:
// // ram bank
// return mbc.rrb (address);
//
// case 0xC000:
// case 0xD000:
// // working ram
// return wram[address - 0xC000];
// case 0xE000:
// // remaining echo ram
// return wram[address - 0xE000];
//
// case 0xF000:
// switch (address & 0x0F00) {
// case 0x000:
// case 0x100:
// case 0x200:
// case 0x300:
// case 0x400:
// case 0x500:
// case 0x600:
// case 0x700:
// case 0x800:
// case 0x900:
// case 0xA00:
// case 0xB00:
// case 0xC00:
// case 0xD00:
// // remaining echo ram
// return wram [address - 0xF000];
//
// case 0xE00:
// if (address >= Address.Oam_L && address <= Address.Oam_M) {
// // oam
// return oam [address - Address.Oam_L];
// } else {
// // outside range of oam (empty)
// return 0x00;
// }
//
// case 0xF00:
// // Zero-page RAM, Memory-mapped I/O, including sound, graphics, etc
// switch (address) {
// // gpu
// case Address.Lcdc:
// return gpu.lcdc;
// case Address.Stat:
// return gpu.stat;
// case Address.Scy:
// return gpu.scy;
// case Address.Scx:
// return gpu.scx;
// case Address.Ly:
// return gpu.ly;
// case Address.Lyc:
// return gpu.lyc;
// case Address.Wy:
// return gpu.wy;
// case Address.Wx:
// return gpu.wx;
// case Address.Bgp:
// return gpu.bgp;
// case Address.Obp0:
// return gpu.obp0;
// case Address.Obp1:
// return gpu.obp1;
//
// // keypad
// case Address.Keypad:
//// UnityEngine.Debug.LogFormat ("R {0}", Convert.ToString (keypad.memory, 2).PadLeft (8, '0'));
// return keypad.memory;
//
// // interrupt
// case Address.InterruptRequest:
// return ir;
// case Address.InterruptEnable:
// return ie;
//
// // timer
// case Address.TimerCounter:
// return timer.counter;
// case Address.TimerDivider:
// return timer.divider;
// case Address.TimerController:
// return timer.controller;
// case Address.TimerModulator:
// return timer.modulator;
//
// default:
// if (address >= 0xFF80 && address <= 0xFFFE) {
// return zram [address - 0xFF80];
// }
// break;
// }
// break;
// }
// break;
// }
// UnityEngine.Debug.Log ("SHOULD NOT BE HERE " + Convert.ToString(address, 16));
switch (address)
{
// gpu
case Address.Lcdc:
return(gpu.lcdc);
case Address.Stat:
return(gpu.stat);
case Address.Scy:
return(gpu.scy);
case Address.Scx:
return(gpu.scx);
case Address.Ly:
return(gpu.ly);
case Address.Lyc:
return(gpu.lyc);
case Address.Wy:
return(gpu.wy);
case Address.Wx:
return(gpu.wx);
case Address.Bgp:
return(gpu.bgp);
case Address.Obp0:
return(gpu.obp0);
case Address.Obp1:
return(gpu.obp1);
// keypad
case Address.Keypad:
UnityEngine.Debug.LogFormat("R {0}", Convert.ToString(keypad.memory, 2).PadLeft(8, '0'));
return(keypad.memory);
// interrupt
case Address.InterruptRequest:
return(ir);
case Address.InterruptEnable:
return(ie);
// timer
case Address.TimerCounter:
return(timer.counter);
case Address.TimerDivider:
return(timer.divider);
case Address.TimerController:
return(timer.controller);
case Address.TimerModulator:
return(timer.modulator);
}
if (address >= Address.RamBank_L && address <= Address.RamBank_M)
{
return(mbc.rrb(address - Address.RamBank_L));
}
byte[] memory;
ushort resolvedAddress;
ResolveMemoryAddress(address, out memory, out resolvedAddress);
return(memory [resolvedAddress]);
}