public void RLC()
{
cpu = new CPU(mmu, regs);
regs.PC = 0xc000;
regs.SetAllRegs(0x85); //put the test data into memory.
for (int i = 0; i < 8; i++)
{
mmu.wb((ushort)(0xc000 + i), (byte)i); // push the RLC instructions into memory.
}
cpu.Tick(0xcb);
Assert.That(regs.B, Is.EqualTo(0xb));
cpu.Tick(0xcb);
Assert.That(regs.C, Is.EqualTo(0xb));
cpu.Tick(0xcb);
Assert.That(regs.D, Is.EqualTo(0xb));
cpu.Tick(0xcb);
Assert.That(regs.E, Is.EqualTo(0xb));
cpu.Tick(0xcb);
Assert.That(regs.H, Is.EqualTo(0xb));
cpu.Tick(0xcb);
Assert.That(regs.L, Is.EqualTo(0xb));
//the HL register
mmu.wb(0xc150, 0x85);
regs.HL = 0xc150;
cpu.Tick(0xcb);
Assert.That(mmu.rb(0xc150), Is.EqualTo(0xb));
//Finally a register.
cpu.Tick(0xcb);
Assert.That(regs.A, Is.EqualTo(0xb));
}
public void wb(int addr, int val)
{
gaddr = addr - 0xFF40;
_reg[gaddr] = val;
switch (gaddr)
{
case 0:
_lcdon = ((val & 0x80) > 0)?true:false;
_winbase = ((val & 0x40) > 0)?0x1C00:0x1800;
_winon = ((val & 0x20) > 0)?true:false;
_bgtilebase = ((val & 0x10) > 0)?0x0000:0x0800;
_bgmapbase = ((val & 0x08) > 0)?0x1C00:0x1800;
_objsize = ((val & 0x04) > 0)?16:8;
_winTransparent = ((val & 0x02) > 0)?false:true;
_bgon = ((val & 0x01) > 0)?true:false;
break;
case 2:
_yscrl = val;
break;
case 3:
_xscrl = val;
break;
case 5:
_raster = val;
break;
// OAM DMA
case 6:
for (i = 0; i < 160; i++)
{
v = mMU.rb((val << 8) + i);
_oam[i] = v;
updateoam(0xFE00 + i, v);
}
break;
// BG palette mapping
case 7:
for (i = 0; i < 4; i++)
{
switch ((val >> (i * 2)) & 3)
{
case 3: bgPalette[i] = '\uE00F'; break;
case 2: bgPalette[i] = '\uE00E'; break;
case 1: bgPalette[i] = '\uE00D'; break;
case 0: bgPalette[i] = '\uE006'; break;
}
}
break;
// OBJ0 palette mapping
case 8:
for (i = 0; i < 4; i++)
{
switch ((val >> (i * 2)) & 3)
{
case 3: obj0Palette[i] = '\uE00F'; break;
case 2: obj0Palette[i] = '\uE00E'; break;
case 1: obj0Palette[i] = '\uE00D'; break;
case 0: obj0Palette[i] = '\uE006'; break;
}
}
break;
// OBJ1 palette mapping
case 9:
for (i = 0; i < 4; i++)
{
switch ((val >> (i * 2)) & 3)
{
case 3: obj1Palette[i] = '\uE00F'; break;
case 2: obj1Palette[i] = '\uE00E'; break;
case 1: obj1Palette[i] = '\uE00D'; break;
case 0: obj1Palette[i] = '\uE006'; break;
}
}
break;
case 10: // WNDPOSY
winy = val;
break;
case 11:
if (val > 166)
{
_winon = false;
}
winx = val;
break;
}
}
public void frame(int throttle, int frameSkip, int stage)
{
fclock = z80._clock.m + 17556;
//Echo every 100 frames
// if(stage % 100 == 0) Echo("Stepping Gameboy (PC = " + z80.r.pc + ")");
//var brk = document.getElementById('breakpoint').value;
if ((stage % frameSkip) == 0)
{
gPU.drawNow();
}
currentTime = System.DateTime.Now.Ticks;
mMU._timer [0] = (int)((currentTime - startTime) / 610.3515625);
switch (mMU._timer[3] & 0x3)
{
case 0:
mMU._timer [1] += (int)(((currentTime - lastTime) / 610.3515625) / 1024);
break;
case 1:
mMU._timer [1] += (int)(((currentTime - lastTime) / 610.3515625) / 16);
break;
case 2:
mMU._timer [1] += (int)(((currentTime - lastTime) / 610.3515625) / 64);
break;
case 3:
mMU._timer [1] += (int)(((currentTime - lastTime) / 610.3515625) / 256);
break;
}
if (mMU._timer [1] > 255)
{
mMU._if |= 0x04;
lastTime = currentTime;
}
if (currentTime - hblankTime > 283813) //handle hblank
{
mMU._if |= 0x01;
hblankTime = currentTime;
vblanks++;
// Echo("vblank " + vblanks);
}
lastTime = currentTime;
for (; z80._clock.m < fclock && throttle > 0; throttle--)
{
//if(z80._halt!=0) z80.r.m=1;
//else
//{
// z80.r.r = (z80.r.r+1) & 127;
z80._map[mMU.rb(z80.r.pc++)]();
z80.r.pc &= 65535;
//}
if (z80.r.ime != 0 && mMU._ie != 0 && mMU._if != 0)
{
z80._halt = 0; z80.r.ime = 0;
ifired = mMU._ie & mMU._if;
if ((ifired & 1) != 0)
{
mMU._if &= 0xFE; z80.RST40();
}
else if ((ifired & 2) != 0)
{
mMU._if &= 0xFD; z80.RST48();
}
else if ((ifired & 4) != 0)
{
mMU._if &= 0xFB; z80.RST50();
}
else if ((ifired & 8) != 0)
{
mMU._if &= 0xF7; z80.RST58();
}
else if ((ifired & 16) != 0)
{
mMU._if &= 0xEF; z80.RST60();
}
else
{
z80.r.ime = 1;
}
}
z80._clock.m += z80.r.m;
gPU.checkline();
// tIMER.inc();
}
}
