public BgControlRegister(GameboyAdvance gba, LcdController lcd, int bgNumber, UInt32 address)
{
this.lcd = lcd;
this.bgNumber = bgNumber;
MemoryRegister8WithSetHook r0 = new MemoryRegister8WithSetHook(gba.Memory, address, true, true);
MemoryRegister8WithSetHook r1 = new MemoryRegister8WithSetHook(gba.Memory, address + 1, true, true);
register = new MemoryRegister16(gba.Memory, address, true, true, r0, r1);
r0.OnSet = (oldValue, newValue) =>
{
lcd.Bg[bgNumber].CacheRenderData();
};
r1.OnSet = (oldValue, newValue) =>
{
// This *should* be 0x1F but it breaks bg on mario kart track 1. Hopefully we can just get rid of tilemap reset and be done with this
//if ((oldValue & 0x1F) != (newValue & 0x1F))
{
// THIS HAS GOT TO GO! Mario Kart canes it!
lcd.Bg[bgNumber].TileMap.Reset();
}
lcd.Bg[bgNumber].CacheRenderData();
};
}
public BgAffineMatrix(GameboyAdvance gba, UInt32 address)
{
pa = new MemoryRegister16(gba.Memory, address, false, true);
pb = new MemoryRegister16(gba.Memory, address + 2, false, true);
pc = new MemoryRegister16(gba.Memory, address + 4, false, true);
pd = new MemoryRegister16(gba.Memory, address + 6, false, true);
}
public DisplayStatusRegister(GameboyAdvance gba, LcdController lcd)
{
this.lcd = lcd;
DispStatRegister r0 = new DispStatRegister(lcd, this, gba.Memory, 0x4000004);
MemoryRegister8 r1 = new MemoryRegister8(gba.Memory, 0x4000005, true, true);
register = new MemoryRegister16(gba.Memory, 0x4000004, true, true, r0, r1);
}
public Joypad(GameboyAdvance gba)
{
this.gba = gba;
JoypadRegister r0 = new JoypadRegister(this, gba.Memory, 0x4000130);
JoypadRegister r1 = new JoypadRegister(this, gba.Memory, 0x4000131);
register = new MemoryRegister16(gba.Memory, 0x4000130, true, false, r0, r1);
}
public DmaChannel(GameboyAdvance gba, int channelNumber)
{
this.gba = gba;
this.channelNumber = channelNumber;
DmaCnt = new DmaControlRegister(gba, this, (UInt32)(0x40000BA + (channelNumber * 0xC)));
// TODO: These are all write only!
// Should: reads open bus if the whole 32-bit word is unused and zero otherwise.
SourceAddress = new MemoryRegister32(gba.Memory, (UInt32)(0x40000B0 + (channelNumber * 0xC)), true, true);
DestAddress = new MemoryRegister32(gba.Memory, (UInt32)(0x40000B4 + (channelNumber * 0xC)), true, true);
WordCount = new MemoryRegister16(gba.Memory, (UInt32)(0x40000B8 + (channelNumber * 0xC)), true, true);
}
public Interrupts(GameboyAdvance gba)
{
this.gba = gba;
InterruptMasterEnable = new MemoryRegister16(gba.Memory, 0x4000208, true, true);
InterruptEnableRegister = new MemoryRegister16(gba.Memory, 0x4000200, true, true);
IntFlagsRegister r0 = new IntFlagsRegister(this, gba.Memory, 0x4000202);
IntFlagsRegister r1 = new IntFlagsRegister(this, gba.Memory, 0x4000203);
InterruptRequestFlagsRegister = new MemoryRegister16(gba.Memory, 0x4000202, true, true, r0, r1);
}
public LcdController(GameboyAdvance gba)
{
this.gba = gba;
frameBuffer0 = new DirectBitmap(Screen_X_Resolution, Screen_Y_Resolution);
frameBuffer1 = new DirectBitmap(Screen_X_Resolution, Screen_Y_Resolution);
FrameBuffer = frameBuffer0;
drawBuffer = frameBuffer1;
this.Palettes = new Palettes();
DisplayControlRegister = new DisplayControlRegister(gba, this);
DispStatRegister = new DisplayStatusRegister(gba, this);
Bg = new Background[4];
UInt32 scrollBaseAddress = 0x4000010;
for (int i = 0; i < 4; i++)
{
BgControlRegister cntReg = new BgControlRegister(gba, this, i, (UInt32) (0x4000008 + (i * 2)));
MemoryRegister16 scrollXReg = new MemoryRegister16(gba.Memory, scrollBaseAddress, false, true, 0x01);
MemoryRegister16 scrollYReg = new MemoryRegister16(gba.Memory, scrollBaseAddress + 2, false, true, 0x01);
Bg[i] = new Background(gba, i, cntReg, scrollXReg, scrollYReg);
scrollBaseAddress += 4;
}
VCount = new MemoryRegister8(gba.Memory, 0x04000006, true, false);
this.ObjController = new ObjController(gba);
Windows = new Window[4];
Windows[0] = new Window(gba, 0x4000040, 0x4000048);
Windows[1] = new Window(gba, 0x4000042, 0x4000049);
Windows[2] = new Window(gba, 0, 0x400004A);
Windows[3] = new Window(gba, 0, 0x400004B);
this.BlendControlRegister = new BlendControlRegister(this, gba);
BlendingCoefficientRegister = new PixelCoefficientRegister(this, gba, 0x4000052);
BrightnessCoefficientRegister = new PixelCoefficientRegister(this, gba, 0x4000054);
#if THREADED_SCANLINE
//Interlocked.Exchange(ref drawScanline, 0);
drawScanline = 0;
exitThread = false;
scanlineThread = new Thread(new ThreadStart(ScanlineThread));
scanlineThread.Priority = ThreadPriority.Highest;
scanlineThread.Start();
#endif
}
public MemoryRegister32(Memory memory, UInt32 address, bool readable, bool writeable)
{
LoWord = new MemoryRegister16(memory, address, readable, writeable);
HiWord = new MemoryRegister16(memory, address + 2, readable, writeable);
if (readable)
{
memory.IoRegisters32Read.Add(address, this);
}
if (writeable)
{
memory.IoRegisters32Write.Add(address, this);
}
}
public Cpu(GameboyAdvance gba)
{
this.Gba = gba;
Memory = gba.Memory;
InstructionPipeline = new UInt32[Pipeline_Size];
CalculateArmDecodeLookUpTable();
CalculateThumbDecodeLookUpTable();
RegisterConditionalHandlers();
MemoryRegister8WithSetHook r0 = new MemoryRegister8WithSetHook(gba.Memory, 0x4000204, true, true);
MemoryRegister8WithSetHook r1 = new MemoryRegister8WithSetHook(gba.Memory, 0x4000205, true, true);
waitStateControlRegister = new MemoryRegister16(gba.Memory, 0x4000204, true, true, r0, r1);
Action <byte, byte> waitStateSet = (oldValue, newValue) =>
{
//Always make sure Bit 15 is 0 and Read-Only in GBA mode
//memory_map[WAITCNT + 1] &= ~0x80;
ushort waitControl = (ushort)(waitStateControlRegister.Value & ~0x80);
//Determine first access cycles (Non-Sequential)
switch ((waitControl >> 2) & 0x3)
{
case 0x0: nonSequentialAccessTime = 4; break;
case 0x1: nonSequentialAccessTime = 3; break;
case 0x2: nonSequentialAccessTime = 2; break;
case 0x3: nonSequentialAccessTime = 8; break;
}
//Determine second access cycles (Sequential)
switch ((waitControl >> 4) & 0x1)
{
case 0x0: sequentialAccessTime = 2; break;
case 0x1: sequentialAccessTime = 1; break;
}
};
r0.OnSet = waitStateSet;
r1.OnSet = waitStateSet;
}
public DisplayControlRegister(GameboyAdvance gba, LcdController lcd)
{
this.lcd = lcd;
MemoryRegister8WithSetHook r0 = new MemoryRegister8WithSetHook(gba.Memory, 0x4000000, true, true);
MemoryRegister8 r1 = new MemoryRegister8(gba.Memory, 0x4000001, true, true);
register = new MemoryRegister16(gba.Memory, 0x4000000, true, true, r0, r1);
r0.OnSet = (oldValue, newValue) =>
{
// BgMode changed?
if ((oldValue & 0x07) != (newValue & 0x07))
{
lcd.Bg[0].CacheRenderData();
lcd.Bg[1].CacheRenderData();
lcd.Bg[2].CacheRenderData();
lcd.Bg[3].CacheRenderData();
}
};
}
public GbaTimer(Timers timers, GameboyAdvance gba, int timerNumber)
{
this.timers = timers;
this.gba = gba;
this.timerNumber = timerNumber;
FiresOnCycle = 0xFFFFFFFF;
UInt32 baseAddr = (UInt32)(0x4000100 + (timerNumber * 4));
TimerValueRegister r0 = new TimerValueRegister(gba, this, gba.Memory, baseAddr);
TimerValueRegister r1 = new TimerValueRegister(gba, this, gba.Memory, baseAddr + 1);
TimerValueRegister = new MemoryRegister16(gba.Memory, baseAddr, true, false, r0, r1);
ReloadValue = new MemoryRegister16(gba.Memory, baseAddr, false, true);
baseAddr = (UInt32)(0x4000102 + (timerNumber * 4));
MemoryRegister8WithSetHook reg = new MemoryRegister8WithSetHook(gba.Memory, baseAddr, true, true);
MemoryRegister8 unused = new MemoryRegister8(gba.Memory, baseAddr + 1, true, true);
TimerControlRegister = new MemoryRegister16(gba.Memory, baseAddr, true, true, reg, unused);
reg.OnSet = (oldValue, newValue) =>
{
CalculateWhichCycleTheTimerWillFire();
timers.CalculateWhenToNextUpdate();
// When a timer is enabled, it reloads it's starting value. When it is disabled it just maintains its current values
bool wasEnabled = ((oldValue & 0x80) != 0);
bool enabled = ((newValue & 0x80) != 0);
if (wasEnabled == false && enabled)
{
startCycle = gba.Cpu.Cycles;
timers.ScheduledUpdate();
TimerValue = ReloadValue.Value;
}
};
}
public AffineScrollRegister(Memory memory, UInt32 address, bool readable, bool writeable) :
base()
{
MemoryRegister8WithSetHook r0 = new MemoryRegister8WithSetHook(memory, address, false, true);
MemoryRegister8WithSetHook r1 = new MemoryRegister8WithSetHook(memory, address + 1, false, true);
MemoryRegister8WithSetHook r2 = new MemoryRegister8WithSetHook(memory, address + 2, false, true);
AffineNegRegister r3 = new AffineNegRegister(memory, address + 3, false, true);
MemoryRegister16 loWord = new MemoryRegister16(memory, address, false, true, r0, r1);
MemoryRegister16 hiWord = new MemoryRegister16(memory, address + 2, false, true, r2, r3);
// Whenever a byte of this register is changed, we update the cached value
// TODO: I don't understand the performance cost of 'capturing' the Value call here....
Action <byte, byte> updateAction = (oldValue, newValue) => { CachedValue = (int)Value; };
r0.OnSet = updateAction;
r1.OnSet = updateAction;
r2.OnSet = updateAction;
r3.OnSet = updateAction;
LoWord = loWord;
HiWord = hiWord;
}
public DmaControlRegister(GameboyAdvance gba, DmaChannel channel, UInt32 address)
{
this.channel = channel;
MemoryRegister8 r0 = new MemoryRegister8(gba.Memory, address, true, true);
MemoryRegister8WithSetHook r1 = new MemoryRegister8WithSetHook(gba.Memory, address + 1, true, true);
register = new MemoryRegister16(gba.Memory, address, true, true, r0, r1);
r1.OnSet = (oldValue, newValue) =>
{
bool oldEnable = ((oldValue & 0x80) != 0);
bool newEnable = ((newValue & 0x80) != 0);
if (oldEnable == false && newEnable == true)
{
// Dma transfers take 2 cycles to start
channel.DelayTransfer = 2;
channel.ScheduledUpdateOnCycle = gba.Cpu.Cycles + 2;
gba.Scheduler.RefreshSchedule();
}
};
}
public Background(GameboyAdvance gba, int bgNumber, BgControlRegister cntRegister, MemoryRegister16 scrollXReg, MemoryRegister16 scrollYReg)
{
this.gba = gba;
this.BgNumber = bgNumber;
CntRegister = cntRegister;
AffineMode = false;
TileMap = new TileMap(gba.Memory.VRam, cntRegister, bgNumber);
BGXHOFS = scrollXReg;
BGXVOFS = scrollYReg;
// Only bg 2 & 3 can rotate and scale
if (bgNumber == 2)
{
AffineMatrix = new BgAffineMatrix(gba, 0x4000020);
AffineScrollXReg = new AffineScrollRegister(gba.Memory, 0x4000028, false, true);
AffineScrollYReg = new AffineScrollRegister(gba.Memory, 0x400002C, false, true);
}
else if (bgNumber == 3)
{
AffineMatrix = new BgAffineMatrix(gba, 0x4000030);
AffineScrollXReg = new AffineScrollRegister(gba.Memory, 0x4000038, false, true);
AffineScrollYReg = new AffineScrollRegister(gba.Memory, 0x400003C, false, true);
}
ScanlineData = new int[LcdController.Screen_X_Resolution];
#if THREADED_SCANLINE
Interlocked.Exchange(ref cacheScanline, 0);
exitThread = false;
scanlineThread = new Thread(new ThreadStart(ScanlineThread));
scanlineThread.Start();
#endif
}
public PixelCoefficientRegister(LcdController lcd, GameboyAdvance gba, UInt32 address)
{
this.lcd = lcd;
register = new MemoryRegister16(gba.Memory, address, true, true);
}
public BlendControlRegister(LcdController lcd, GameboyAdvance gba)
{
this.lcd = lcd;
register = new MemoryRegister16(gba.Memory, 0x4000050, true, true);
}
