public static Vic Create(C64.BorderType borderType)
{
return(new Vic(
Cycles, Lines,
Pipeline,
17734472 / 18,
HblankStart, HblankEnd,
VblankStart, VblankEnd,
borderType,
7375,
7882));
}
public static Vic Create(C64.BorderType borderType)
{
return(new Vic(
Cycles, Lines,
Pipeline,
14318181 / 14,
HblankStart, HblankEnd,
VblankStart, VblankEnd,
borderType,
6136,
8182));
}
public static Vic Create(C64.BorderType borderType)
{
return(new Vic(
Cycles, Lines,
Pipeline,
14328225 / 14,
HblankStart, HblankEnd,
VblankStart, VblankEnd,
borderType,
908, 1000
));
}
private void ConfigureBlanking(int lines, int hblankStart, int hblankEnd, int vblankStart, int vblankEnd,
C64.BorderType borderType)
{
var newHblankStart = hblankStart;
var newHblankEnd = hblankEnd;
var newVblankStart = vblankStart;
var newVblankEnd = vblankEnd;
var hBorderSize = 16; // must be a multiple of 4
var vBorderSize = hBorderSize * _pixelRatioNum / _pixelRatioDen; // to keep top and bottom in proportion
var maxWidth = _rasterXPipeline.Max();
switch (borderType)
{
case C64.BorderType.Full:
newHblankStart = -1;
newHblankEnd = -1;
_hblank = false;
newVblankStart = -1;
newVblankEnd = -1;
_vblank = false;
break;
case C64.BorderType.Normal:
newHblankStart = hblankStart;
newHblankEnd = hblankEnd;
newVblankStart = vblankStart;
newVblankEnd = vblankEnd;
_vblank = true;
_hblank = true;
break;
case C64.BorderType.SmallProportional:
_vblank = true;
_hblank = true;
newHblankStart = 0x158 + PixBufferSize + hBorderSize;
newHblankEnd = 0x018 + PixBufferSize - hBorderSize;
newVblankStart = 0xFA + vBorderSize;
newVblankEnd = 0x32 - vBorderSize;
break;
case C64.BorderType.SmallFixed:
_vblank = true;
_hblank = true;
newHblankStart = 0x158 + PixBufferSize + hBorderSize;
newHblankEnd = 0x018 + PixBufferSize - hBorderSize;
newVblankStart = 0xFA + hBorderSize;
newVblankEnd = 0x32 - hBorderSize;
break;
case C64.BorderType.None:
newHblankStart = 0x158 + PixBufferSize;
newHblankEnd = 0x018 + PixBufferSize;
newVblankStart = 0xFA;
newVblankEnd = 0x32;
_vblank = true;
_hblank = true;
break;
}
// wrap values
if (_hblank)
{
newHblankStart = WrapValue(0, maxWidth, newHblankStart);
newHblankEnd = WrapValue(0, maxWidth, newHblankEnd);
}
if (_vblank)
{
newVblankStart = WrapValue(0, lines, newVblankStart);
newVblankEnd = WrapValue(0, lines, newVblankEnd);
}
// calculate output dimensions
_hblankStartCheckXRaster = newHblankStart & 0xFFC;
_hblankEndCheckXRaster = newHblankEnd & 0xFFC;
_vblankStart = newVblankStart;
_vblankEnd = newVblankEnd;
_bufWidth = TimingBuilder_ScreenWidth(_rasterXPipeline, newHblankStart, newHblankEnd);
_bufHeight = TimingBuilder_ScreenHeight(newVblankStart, newVblankEnd, lines);
_buf = new int[_bufWidth * _bufHeight];
_bufLength = _buf.Length;
VirtualWidth = _bufWidth * _pixelRatioNum / _pixelRatioDen;
VirtualHeight = _bufHeight;
}
public Vic(int newCycles, int newLines, IList <int[]> newPipeline, int newCyclesPerSec, int hblankStart, int hblankEnd, int vblankStart, int vblankEnd, C64.BorderType borderType, int pixelRatioNum, int pixelRatioDen)
{
Util.DebugWriteLine("C64 VIC timings:");
Util.DebugWriteLine("RX FTCH BA ACT");
for (var i = 0; i < newPipeline[0].Length; i++)
{
Util.DebugWriteLine("{0:x4} {1:x4} {2:x4} {3:x8}", newPipeline[0][i], newPipeline[1][i], newPipeline[2][i], newPipeline[3][i]);
}
_pixelRatioNum = pixelRatioNum;
_pixelRatioDen = pixelRatioDen;
_rasterXPipeline = newPipeline[0];
_fetchPipeline = newPipeline[1];
_baPipeline = newPipeline[2];
_actPipeline = newPipeline[3];
_totalCycles = newCycles;
_totalLines = newLines;
_cyclesPerSec = newCyclesPerSec;
ConfigureBlanking(newLines, hblankStart, hblankEnd, vblankStart, vblankEnd, borderType);
_sprites = new Sprite[8];
for (var i = 0; i < 8; i++)
{
_sprites[i] = new Sprite(i);
}
_sprite0 = _sprites[0];
_sprite1 = _sprites[1];
_sprite2 = _sprites[2];
_sprite3 = _sprites[3];
_sprite4 = _sprites[4];
_sprite5 = _sprites[5];
_sprite6 = _sprites[6];
_sprite7 = _sprites[7];
_bufferC = new int[40];
_pixBuffer = new int[PixBufferSize];
_pixBorderBuffer = new int[PixBorderBufferSize];
}
public Motherboard(C64 c64, C64.VicType initRegion, C64.BorderType borderType, C64.SidType sidType, C64.TapeDriveType tapeDriveType, C64.DiskDriveType diskDriveType)
{
// note: roms need to be added on their own externally
_c64 = c64;
int clockNum, clockDen;
switch (initRegion)
{
case C64.VicType.Pal:
clockNum = 17734475;
clockDen = 18;
break;
case C64.VicType.Ntsc:
clockNum = 14318181;
clockDen = 14;
break;
case C64.VicType.NtscOld:
clockNum = 11250000;
clockDen = 11;
break;
case C64.VicType.Drean:
clockNum = 14328225;
clockDen = 14;
break;
default:
throw new System.Exception();
}
CartPort = new CartridgePort();
Cassette = new CassettePort();
ColorRam = new Chip2114();
Cpu = new Chip6510();
Pla = new Chip90611401();
Ram = new Chip4864();
Serial = new SerialPort();
switch (sidType)
{
case C64.SidType.OldR2:
Sid = Chip6581R2.Create(44100, clockNum, clockDen);
break;
case C64.SidType.OldR3:
Sid = Chip6581R3.Create(44100, clockNum, clockDen);
break;
case C64.SidType.OldR4AR:
Sid = Chip6581R4AR.Create(44100, clockNum, clockDen);
break;
case C64.SidType.NewR5:
Sid = Chip8580R5.Create(44100, clockNum, clockDen);
break;
}
switch (initRegion)
{
case C64.VicType.Ntsc:
Vic = Chip6567R8.Create(borderType);
Cia0 = Chip6526.Create(C64.CiaType.Ntsc, Input_ReadKeyboard, Input_ReadJoysticks);
Cia1 = Chip6526.Create(C64.CiaType.Ntsc, Cia1_ReadPortA);
break;
case C64.VicType.Pal:
Vic = Chip6569.Create(borderType);
Cia0 = Chip6526.Create(C64.CiaType.Pal, Input_ReadKeyboard, Input_ReadJoysticks);
Cia1 = Chip6526.Create(C64.CiaType.Pal, Cia1_ReadPortA);
break;
case C64.VicType.NtscOld:
Vic = Chip6567R56A.Create(borderType);
Cia0 = Chip6526.Create(C64.CiaType.NtscRevA, Input_ReadKeyboard, Input_ReadJoysticks);
Cia1 = Chip6526.Create(C64.CiaType.NtscRevA, Cia1_ReadPortA);
break;
case C64.VicType.Drean:
Vic = Chip6572.Create(borderType);
Cia0 = Chip6526.Create(C64.CiaType.Pal, Input_ReadKeyboard, Input_ReadJoysticks);
Cia1 = Chip6526.Create(C64.CiaType.Pal, Cia1_ReadPortA);
break;
}
User = new UserPort();
ClockNumerator = clockNum;
ClockDenominator = clockDen;
// Initialize disk drive
switch (diskDriveType)
{
case C64.DiskDriveType.Commodore1541:
case C64.DiskDriveType.Commodore1541II:
DiskDrive = new Drive1541(ClockNumerator, ClockDenominator);
Serial.Connect(DiskDrive);
break;
}
// Initialize tape drive
switch (tapeDriveType)
{
case C64.TapeDriveType.Commodore1530:
TapeDrive = new TapeDrive();
Cassette.Connect(TapeDrive);
break;
}
BasicRom = new Chip23128();
CharRom = new Chip23128();
KernalRom = new Chip23128();
}
