static MMU()
{
MMU.bios = new byte[] {
0x31, 0xFE, 0xFF, 0xAF, 0x21, 0xFF, 0x9F, 0x32, 0xCB, 0x7C, 0x20, 0xFB, 0x21, 0x26, 0xFF, 0x0E,
0x11, 0x3E, 0x80, 0x32, 0xE2, 0x0C, 0x3E, 0xF3, 0xE2, 0x32, 0x3E, 0x77, 0x77, 0x3E, 0xFC, 0xE0,
0x47, 0x11, 0x04, 0x01, 0x21, 0x10, 0x80, 0x1A, 0xCD, 0x95, 0x00, 0xCD, 0x96, 0x00, 0x13, 0x7B,
0xFE, 0x34, 0x20, 0xF3, 0x11, 0xD8, 0x00, 0x06, 0x08, 0x1A, 0x13, 0x22, 0x23, 0x05, 0x20, 0xF9,
0x3E, 0x19, 0xEA, 0x10, 0x99, 0x21, 0x2F, 0x99, 0x0E, 0x0C, 0x3D, 0x28, 0x08, 0x32, 0x0D, 0x20,
0xF9, 0x2E, 0x0F, 0x18, 0xF3, 0x67, 0x3E, 0x64, 0x57, 0xE0, 0x42, 0x3E, 0x91, 0xE0, 0x40, 0x04,
0x1E, 0x02, 0x0E, 0x0C, 0xF0, 0x44, 0xFE, 0x90, 0x20, 0xFA, 0x0D, 0x20, 0xF7, 0x1D, 0x20, 0xF2,
0x0E, 0x13, 0x24, 0x7C, 0x1E, 0x83, 0xFE, 0x62, 0x28, 0x06, 0x1E, 0xC1, 0xFE, 0x64, 0x20, 0x06,
0x7B, 0xE2, 0x0C, 0x3E, 0x87, 0xF2, 0xF0, 0x42, 0x90, 0xE0, 0x42, 0x15, 0x20, 0xD2, 0x05, 0x20,
0x4F, 0x16, 0x20, 0x18, 0xCB, 0x4F, 0x06, 0x04, 0xC5, 0xCB, 0x11, 0x17, 0xC1, 0xCB, 0x11, 0x17,
0x05, 0x20, 0xF5, 0x22, 0x23, 0x22, 0x23, 0xC9, 0xCE, 0xED, 0x66, 0x66, 0xCC, 0x0D, 0x00, 0x0B,
0x03, 0x73, 0x00, 0x83, 0x00, 0x0C, 0x00, 0x0D, 0x00, 0x08, 0x11, 0x1F, 0x88, 0x89, 0x00, 0x0E,
0xDC, 0xCC, 0x6E, 0xE6, 0xDD, 0xDD, 0xD9, 0x99, 0xBB, 0xBB, 0x67, 0x63, 0x6E, 0x0E, 0xEC, 0xCC,
0xDD, 0xDC, 0x99, 0x9F, 0xBB, 0xB9, 0x33, 0x3E, 0x3c, 0x42, 0xB9, 0xA5, 0xB9, 0xA5, 0x42, 0x4C,
0x21, 0x04, 0x01, 0x11, 0xA8, 0x00, 0x1A, 0x13, 0xBE, 0x20, 0xFE, 0x23, 0x7D, 0xFE, 0x34, 0x20,
0xF5, 0x06, 0x19, 0x78, 0x86, 0x23, 0x05, 0x20, 0xFB, 0x86, 0x20, 0xFE, 0x3E, 0x01, 0xE0, 0x50
};
MMU.rom = new byte[0x8000];
MMU.wram = new byte[0x2000];
MMU.eram = new byte[0x2000];
MMU.zram = new byte[0xFF];
MMU.reset();
}
public static void renderScan()
{
// VRAM offset for the tile map
UInt16 mapOffs = (UInt16)(curLine + yScrl);
mapOffs &= 0xFF;
mapOffs >>= 3;
mapOffs <<= 5;
UInt16 lineOffs = (UInt16)((xScrl >> 3) & 31);
UInt16 index = BgTileMapSelect ? MMU.readByte((UInt16)((mapOffs + lineOffs) + 0x8800)) : MMU.readByte((UInt16)((mapOffs + lineOffs) + 0x8800));
// Where in the tile to start
byte x = (byte)(xScrl & 7);
byte y = (byte)((curLine + yScrl) & 7);
if (!TileDataSelect)
{
if (index < 128)
{
index += 128;
}
else
{
index -= 128;
}
}
for (int i = 0; i < 160; i++)
{
//get 16-bit tile data
UInt16 tile = TileDataSelect ? MMU.readWord((UInt16)((index << 1) + 0x8000)) : MMU.readWord((UInt16)((index << 1) + 0x8800));
//mask all but 0xnn where n = 'pixel number'
//then add the 2 bits
byte a = (byte)(((tile & 0xFF) & (1 << x)) >> x);
byte b = (byte)(((tile >> 8) & (1 << x)) >> x);
byte c = (byte)(a + (b >> 1));
// Write to linebuffer
GPU.lineBuffer[i] = c;
// Increment x pixel within tile
x++;
if (x == 8)
{
//Reset x pixel within tile, get new tile data
x = 0;
lineOffs = (UInt16)((lineOffs + 1) & 31);
index = BgTileMapSelect ? vram[(mapOffs + lineOffs) + 0x1C00] : vram[(mapOffs + lineOffs) + 0x1800];
}
}
}
public static void writeWord(UInt16 addr, UInt16 val)
{
MMU.writeByte(addr, (byte)(val & 0x00FF));
MMU.writeByte((UInt16)(addr + 1), (byte)(val >> 8));
}
public static UInt16 readWord(UInt16 addr)
{
return((UInt16)(MMU.readByte(addr) + (MMU.readByte((UInt16)(addr + 1)) << 8)));
}
/*
* [STAThread]
* static void Main()
* {
* // Load Emulator Window
* StartLoadWindowThread();
*
* Console.WriteLine("GBEMU DEV by Saintwolf");
*
* Console.WriteLine("Resetting Gameboy");
* reset();
*
* Console.WriteLine("Loading ROM...");
* MMU.load("C:\\GBROMS\\Pokemon Blue.gb");
*
*
* bool running = true;
*
* while (running)
* {
* Console.WriteLine("Registers:");
* Console.WriteLine("A : " + Z80.Registers.a.ToString("X"));
* Console.WriteLine("B : " + Z80.Registers.b.ToString("X"));
* Console.WriteLine("C : " + Z80.Registers.c.ToString("X"));
* Console.WriteLine("D : " + Z80.Registers.d.ToString("X"));
* Console.WriteLine("E : " + Z80.Registers.e.ToString("X"));
* Console.WriteLine("H : " + Z80.Registers.h.ToString("X"));
* Console.WriteLine("L : " + Z80.Registers.l.ToString("X"));
* Console.WriteLine("PC : " + Z80.Registers.pc.ToString("X"));
* Console.WriteLine("SP : " + Z80.Registers.sp.ToString("X"));
* Console.WriteLine("F (Decimal) : " + Z80.Registers.f.ToString("X"));
* Console.WriteLine("Clock m : " + Z80.Clock.m.ToString("X"));
* Console.WriteLine("Clock t : " + Z80.Clock.t.ToString("X"));
* Console.Write("Press S to step, N to step 100 times, R to reset or X to exit: ");
* ConsoleKey key = Console.ReadKey().Key;
* Console.WriteLine();
* switch (key)
* {
* case ConsoleKey.S:
* Console.WriteLine("Executing command at address: " + Z80.Registers.pc.ToString("X") + "(" + MMU.readByte(Z80.Registers.pc).ToString("X") + ")");
* Z80.step();
* GPU.step();
* break;
*
* case ConsoleKey.X:
* running = false;
* Console.WriteLine("Shutting Down...");
* break;
*
* case ConsoleKey.J:
* while (Z80.Registers.pc != 0x6A)
* {
* Z80.step();
* GPU.step();
* }
* break;
*
* case ConsoleKey.N:
* for (int i = 0; i < 1000; i++)
* {
* frame();
* }
* break;
*
* case ConsoleKey.R:
* Z80.reset();
* break;
* }
*
* }
* }
*/
public static void reset()
{
GPU.reset();
MMU.reset();
Z80.reset();
}
public static void Main()
{
StartLoadGUIThread();
bool reset = true;
while (true)
{
// Application.Run(new GBEmuWindow());
if (reset)
{
MMU.load("C:\\GBROMS\\hello.gb");
GBEmu.reset();
reset = false;
}
Console.WriteLine("Registers:");
Console.WriteLine("A : " + Z80.Registers.a.ToString("X"));
Console.WriteLine("B : " + Z80.Registers.b.ToString("X"));
Console.WriteLine("C : " + Z80.Registers.c.ToString("X"));
Console.WriteLine("D : " + Z80.Registers.d.ToString("X"));
Console.WriteLine("E : " + Z80.Registers.e.ToString("X"));
Console.WriteLine("H : " + Z80.Registers.h.ToString("X"));
Console.WriteLine("L : " + Z80.Registers.l.ToString("X"));
Console.WriteLine("PC : " + Z80.Registers.pc.ToString("X"));
Console.WriteLine("SP : " + Z80.Registers.sp.ToString("X"));
Console.WriteLine("F (Decimal) : " + Z80.Registers.f.ToString("X"));
Console.WriteLine("Clock m : " + Z80.Clock.m.ToString("X"));
Console.WriteLine("Clock t : " + Z80.Clock.t.ToString("X"));
Console.Write("Press S to step, N to step 100 times, R to reset or X to exit: ");
ConsoleKey key = Console.ReadKey().Key;
Console.WriteLine();
switch (key)
{
case ConsoleKey.S:
Console.WriteLine("Executing command at address: " + Z80.Registers.pc.ToString("X") + "(" + MMU.readByte(Z80.Registers.pc).ToString("X") + ")");
Z80.step();
GPU.step();
break;
case ConsoleKey.J:
Z80.step();
GPU.step();
while (Z80.Registers.pc != 0x100)
{
Z80.step();
GPU.step();
}
break;
case ConsoleKey.N:
for (int i = 0; i < 1000; i++)
{
GBEmu.frame();
}
break;
case ConsoleKey.R:
Z80.reset();
break;
}
}
}