Apple-2-Tools/Virtu
1
0
Fork 0
mirror of https://github.com/digital-jellyfish/Virtu.git synced 2024-06-01 06:41:34 +00:00
Code Issues Projects Releases Wiki Activity
7b713e6aaa
Virtu/Virtu/Video.cs
Sean Fausett 7b713e6aaa Cosmetic changes. 
Set svn properties on files.

--HG--
extra : convert_revision : svn%3Affd33b8c-2492-42e0-bdc5-587b920b7d6d/trunk%4044493
2010-04-04 00:12:01 +00:00

1028 lines
43 KiB
C#
Raw Blame History

using System;
using Jellyfish.Virtu.Services;
using Jellyfish.Virtu.Settings;
namespace Jellyfish.Virtu
{
public sealed partial class Video : MachineComponent
{
public Video(Machine machine) :
base(machine)
{
_flushRowEvent = FlushRowEvent; // cache delegates; avoids garbage
_inverseTextEvent = InverseTextEvent;
_leaveVBlankEvent = LeaveVBlankEvent;
_resetVSyncEvent = ResetVSyncEvent;
FlushRowMode = new Action<int>[ModeCount]
{
FlushRowMode0, FlushRowMode1, FlushRowMode2, FlushRowMode3, FlushRowMode4, FlushRowMode5, FlushRowMode6, FlushRowMode7,
FlushRowMode8, FlushRowMode9, FlushRowModeA, FlushRowModeB, FlushRowModeC, FlushRowModeD, FlushRowModeE, FlushRowModeF
};
}
public override void Initialize()
{
_memory = Machine.Memory;
_videoService = Machine.Services.GetService<VideoService>();
UpdateSettings();
IsVBlank = true;
Machine.Events.AddEvent(_cyclesPerVBlankPreset, _leaveVBlankEvent); // align flush events with scanner; assumes vcount preset at start of frame [3-15, 3-16]
Machine.Events.AddEvent(_cyclesPerVSync, _resetVSyncEvent);
Machine.Events.AddEvent(_cyclesPerFlash, _inverseTextEvent);
}
public override void Reset()
{
SetCharSet();
DirtyScreen();
FlushScreen();
}
public void DirtyCell(int addressOffset)
{
_isCellDirty[CellIndex[addressOffset]] = true;
}
public void DirtyCellMixed(int addressOffset)
{
int cellIndex = CellIndex[addressOffset];
if (cellIndex < MixedCellIndex)
{
_isCellDirty[cellIndex] = true;
}
}
public void DirtyCellMixedText(int addressOffset)
{
int cellIndex = CellIndex[addressOffset];
if (cellIndex >= MixedCellIndex)
{
_isCellDirty[cellIndex] = true;
}
}
public void DirtyScreen()
{
for (int i = 0; i < Height * CellColumns; i++)
{
_isCellDirty[i] = true;
}
}
public void DirtyScreenText()
{
if (_memory.IsText)
{
for (int i = 0; i < MixedHeight * CellColumns; i++)
{
_isCellDirty[i] = true;
}
}
if (_memory.IsText || _memory.IsMixed)
{
for (int i = MixedHeight * CellColumns; i < Height * CellColumns; i++)
{
_isCellDirty[i] = true;
}
}
}
public int ReadFloatingBus()
{
// derive scanner counters from current cycles into frame; assumes hcount and vcount preset at start of frame [3-13, 3-15, 3-16]
int cycles = _cyclesPerVSync - Machine.Events.FindEvent(_resetVSyncEvent);
int hClock = cycles % CyclesPerHSync;
int hCount = (hClock != 0) ? HCountPreset + hClock - 1 : 0;
int vLine = cycles / CyclesPerHSync;
int vCount = _vCountPreset + vLine;
// derive scanner address [5-8]
int address = ((vCount << 4) & 0x0380) | ((0x0068 + (hCount & 0x0038) + (((vCount >> 1) & 0x0060) | ((vCount >> 3) & 0x0018))) & 0x0078) | (hCount & 0x0007);
if (_memory.IsHires && !(_memory.IsMixed && ((vCount & 0xA0) == 0xA0))) // hires but not actively mixed [5-13, 5-19]
{
address |= (_memory.IsVideoPage2 ? 0x4000 : 0x2000) | ((vCount << 10) & 0x1C00);
}
else
{
address |= _memory.IsVideoPage2 ? 0x0800 : 0x0400;
if (((_scannerOptions & ScannerOptions.AppleII) != 0) && (hCount < HCountLeaveHBlank))
{
address |= 0x1000;
}
}
return _memory.Read(address);
}
public void SetCharSet()
{
_charSet = !_memory.IsCharSetAlternate ? CharSetPrimary : (_memory.Monitor == MonitorType.Standard) ? CharSetSecondaryStandard : CharSetSecondaryEnhanced;
DirtyScreenText();
}
public void ToggleFullScreen()
{
Machine.Settings.Video.IsFullScreen ^= true;
_videoService.ToggleFullScreen();
DirtyScreen();
FlushScreen();
}
public void ToggleMonochrome()
{
Machine.Settings.Video.IsMonochrome ^= true;
DirtyScreen();
FlushScreen();
}
#region Draw Methods
private void DrawText40(int data, int x, int y)
{
int color = Machine.Settings.Video.IsMonochrome ? ColorMono00 : ColorWhite00;
int index = _charSet[data] * CharBitmapBytes;
int inverseMask = (_isTextInversed && !_memory.IsCharSetAlternate && (0x40 <= data) && (data <= 0x7F)) ? 0x7F : 0x00;
for (int i = 0; i < TextHeight; i++, y++)
{
data = CharBitmap[index + i] ^ inverseMask;
SetPixel(x + 0, y, color | (data & 0x01));
SetPixel(x + 1, y, color | (data & 0x01));
SetPixel(x + 2, y, color | (data & 0x02));
SetPixel(x + 3, y, color | (data & 0x02));
SetPixel(x + 4, y, color | (data & 0x04));
SetPixel(x + 5, y, color | (data & 0x04));
SetPixel(x + 6, y, color | (data & 0x08));
SetPixel(x + 7, y, color | (data & 0x08));
SetPixel(x + 8, y, color | (data & 0x10));
SetPixel(x + 9, y, color | (data & 0x10));
SetPixel(x + 10, y, color | (data & 0x20));
SetPixel(x + 11, y, color | (data & 0x20));
SetPixel(x + 12, y, color | (data & 0x40));
SetPixel(x + 13, y, color | (data & 0x40));
}
}
private void DrawText80(int data, int x, int y)
{
int color = Machine.Settings.Video.IsMonochrome ? ColorMono00 : ColorWhite00;
int index = _charSet[data] * CharBitmapBytes;
int mask = (_isTextInversed && !_memory.IsCharSetAlternate && (0x40 <= data) && (data <= 0x7F)) ? 0x7F : 0x00;
for (int i = 0; i < TextHeight; i++, y++)
{
data = CharBitmap[index + i] ^ mask;
SetPixel(x + 0, y, color | (data & 0x01));
SetPixel(x + 1, y, color | (data & 0x02));
SetPixel(x + 2, y, color | (data & 0x04));
SetPixel(x + 3, y, color | (data & 0x08));
SetPixel(x + 4, y, color | (data & 0x10));
SetPixel(x + 5, y, color | (data & 0x20));
SetPixel(x + 6, y, color | (data & 0x40));
}
}
private void DrawLores(int data, int x, int y)
{
if (Machine.Settings.Video.IsMonochrome)
{
if ((x & 0x02) == 0x02) // odd cell
{
data = ((data << 2) & 0xCC) | ((data >> 2) & 0x33);
}
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, data & 0x01);
SetPixel(x + 1, y, data & 0x02);
SetPixel(x + 2, y, data & 0x04);
SetPixel(x + 3, y, data & 0x08);
SetPixel(x + 4, y, data & 0x01);
SetPixel(x + 5, y, data & 0x02);
SetPixel(x + 6, y, data & 0x04);
SetPixel(x + 7, y, data & 0x08);
SetPixel(x + 8, y, data & 0x01);
SetPixel(x + 9, y, data & 0x02);
SetPixel(x + 10, y, data & 0x04);
SetPixel(x + 11, y, data & 0x08);
SetPixel(x + 12, y, data & 0x01);
SetPixel(x + 13, y, data & 0x02);
}
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, data & 0x10);
SetPixel(x + 1, y, data & 0x20);
SetPixel(x + 2, y, data & 0x40);
SetPixel(x + 3, y, data & 0x80);
SetPixel(x + 4, y, data & 0x10);
SetPixel(x + 5, y, data & 0x20);
SetPixel(x + 6, y, data & 0x40);
SetPixel(x + 7, y, data & 0x80);
SetPixel(x + 8, y, data & 0x10);
SetPixel(x + 9, y, data & 0x20);
SetPixel(x + 10, y, data & 0x40);
SetPixel(x + 11, y, data & 0x80);
SetPixel(x + 12, y, data & 0x10);
SetPixel(x + 13, y, data & 0x20);
}
}
else
{
int color = ColorLores[data & 0x0F];
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, color);
SetPixel(x + 1, y, color);
SetPixel(x + 2, y, color);
SetPixel(x + 3, y, color);
SetPixel(x + 4, y, color);
SetPixel(x + 5, y, color);
SetPixel(x + 6, y, color);
SetPixel(x + 7, y, color);
SetPixel(x + 8, y, color);
SetPixel(x + 9, y, color);
SetPixel(x + 10, y, color);
SetPixel(x + 11, y, color);
SetPixel(x + 12, y, color);
SetPixel(x + 13, y, color);
}
color = ColorLores[data >> 4];
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, color);
SetPixel(x + 1, y, color);
SetPixel(x + 2, y, color);
SetPixel(x + 3, y, color);
SetPixel(x + 4, y, color);
SetPixel(x + 5, y, color);
SetPixel(x + 6, y, color);
SetPixel(x + 7, y, color);
SetPixel(x + 8, y, color);
SetPixel(x + 9, y, color);
SetPixel(x + 10, y, color);
SetPixel(x + 11, y, color);
SetPixel(x + 12, y, color);
SetPixel(x + 13, y, color);
}
}
}
private void Draw7MLores(int data, int x, int y)
{
if (Machine.Settings.Video.IsMonochrome)
{
if ((x & 0x02) == 0x02) // odd cell
{
data = ((data << 2) & 0xCC) | ((data >> 2) & 0x33);
}
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, data & 0x01);
SetPixel(x + 1, y, data & 0x01);
SetPixel(x + 2, y, data & 0x02);
SetPixel(x + 3, y, data & 0x02);
SetPixel(x + 4, y, data & 0x04);
SetPixel(x + 5, y, data & 0x04);
SetPixel(x + 6, y, data & 0x08);
SetPixel(x + 7, y, data & 0x08);
SetPixel(x + 8, y, data & 0x01);
SetPixel(x + 9, y, data & 0x01);
SetPixel(x + 10, y, data & 0x02);
SetPixel(x + 11, y, data & 0x02);
SetPixel(x + 12, y, data & 0x04);
SetPixel(x + 13, y, data & 0x04);
}
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, data & 0x10);
SetPixel(x + 1, y, data & 0x10);
SetPixel(x + 2, y, data & 0x20);
SetPixel(x + 3, y, data & 0x20);
SetPixel(x + 4, y, data & 0x40);
SetPixel(x + 5, y, data & 0x40);
SetPixel(x + 6, y, data & 0x80);
SetPixel(x + 7, y, data & 0x80);
SetPixel(x + 8, y, data & 0x10);
SetPixel(x + 9, y, data & 0x10);
SetPixel(x + 10, y, data & 0x20);
SetPixel(x + 11, y, data & 0x20);
SetPixel(x + 12, y, data & 0x40);
SetPixel(x + 13, y, data & 0x40);
}
}
else
{
int color = Color7MLores[((x & 0x02) << 3) | (data & 0x0F)];
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, color);
SetPixel(x + 1, y, color);
SetPixel(x + 2, y, color);
SetPixel(x + 3, y, color);
SetPixel(x + 4, y, color);
SetPixel(x + 5, y, color);
SetPixel(x + 6, y, color);
SetPixel(x + 7, y, color);
SetPixel(x + 8, y, color);
SetPixel(x + 9, y, color);
SetPixel(x + 10, y, color);
SetPixel(x + 11, y, color);
SetPixel(x + 12, y, color);
SetPixel(x + 13, y, color);
}
color = Color7MLores[((x & 0x02) << 3) | (data >> 4)];
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, color);
SetPixel(x + 1, y, color);
SetPixel(x + 2, y, color);
SetPixel(x + 3, y, color);
SetPixel(x + 4, y, color);
SetPixel(x + 5, y, color);
SetPixel(x + 6, y, color);
SetPixel(x + 7, y, color);
SetPixel(x + 8, y, color);
SetPixel(x + 9, y, color);
SetPixel(x + 10, y, color);
SetPixel(x + 11, y, color);
SetPixel(x + 12, y, color);
SetPixel(x + 13, y, color);
}
}
}
private void DrawDLores(int data, int x, int y)
{
if (Machine.Settings.Video.IsMonochrome)
{
if ((x & 0x01) == 0x00) // even half cell
{
data = ((data << 1) & 0xEE) | ((data >> 3) & 0x11);
}
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, data & 0x01);
SetPixel(x + 1, y, data & 0x02);
SetPixel(x + 2, y, data & 0x04);
SetPixel(x + 3, y, data & 0x08);
SetPixel(x + 4, y, data & 0x01);
SetPixel(x + 5, y, data & 0x02);
SetPixel(x + 6, y, data & 0x04);
}
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, data & 0x10);
SetPixel(x + 1, y, data & 0x20);
SetPixel(x + 2, y, data & 0x40);
SetPixel(x + 3, y, data & 0x80);
SetPixel(x + 4, y, data & 0x10);
SetPixel(x + 5, y, data & 0x20);
SetPixel(x + 6, y, data & 0x40);
}
}
else
{
int color = ColorDLores[((x & 0x01) << 4) | (data & 0x0F)];
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, color);
SetPixel(x + 1, y, color);
SetPixel(x + 2, y, color);
SetPixel(x + 3, y, color);
SetPixel(x + 4, y, color);
SetPixel(x + 5, y, color);
SetPixel(x + 6, y, color);
}
color = ColorDLores[((x & 0x01) << 4) | (data >> 4)];
for (int i = 0; i < LoresHeight; i++, y++)
{
SetPixel(x + 0, y, color);
SetPixel(x + 1, y, color);
SetPixel(x + 2, y, color);
SetPixel(x + 3, y, color);
SetPixel(x + 4, y, color);
SetPixel(x + 5, y, color);
SetPixel(x + 6, y, color);
}
}
}
private void DrawHires(int address, int x, int y)
{
if (Machine.Settings.Video.IsMonochrome)
{
int data = _memory.ReadRamMainRegion02BF(address);
SetPixel(x + 0, y, data & 0x01);
SetPixel(x + 1, y, data & 0x01);
SetPixel(x + 2, y, data & 0x02);
SetPixel(x + 3, y, data & 0x02);
SetPixel(x + 4, y, data & 0x04);
SetPixel(x + 5, y, data & 0x04);
SetPixel(x + 6, y, data & 0x08);
SetPixel(x + 7, y, data & 0x08);
SetPixel(x + 8, y, data & 0x10);
SetPixel(x + 9, y, data & 0x10);
SetPixel(x + 10, y, data & 0x20);
SetPixel(x + 11, y, data & 0x20);
SetPixel(x + 12, y, data & 0x40);
SetPixel(x + 13, y, data & 0x40);
}
else
{
// 3 2 1 0
// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
//
// - - - - - - - - 0 0 0 0 0 0 0 0 + + + + + + + +
// H 1 0 H 6 5 4 3 2 1 0 H 1 0
int data = _memory.ReadRamMainRegion02BF(address) << 8;
if (x < Width - CellWidth)
{
data |= _memory.ReadRamMainRegion02BF(address + 1);
SetPixel(x + 14, y, ColorHires[((~x & 0x02) << 3) | ((data >> 4) & 0x08) | ((data << 1) & 0x06) | ((data >> 14) & 0x01)]);
SetPixel(x + 15, y, ColorHires[((~x & 0x02) << 3) | ((data >> 4) & 0x08) | ((data << 1) & 0x06) | ((data >> 14) & 0x01)]);
}
if (x > 0)
{
data |= _memory.ReadRamMainRegion02BF(address - 1) << 16;
SetPixel(x - 2, y, ColorHires[((~x & 0x02) << 3) | ((data >> 20) & 0x08) | ((data >> 6) & 0x04) | ((data >> 21) & 0x03)]);
SetPixel(x - 1, y, ColorHires[((~x & 0x02) << 3) | ((data >> 20) & 0x08) | ((data >> 6) & 0x04) | ((data >> 21) & 0x03)]);
}
SetPixel(x + 0, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 7) & 0x06) | ((data >> 22) & 0x01)]);
SetPixel(x + 1, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 7) & 0x06) | ((data >> 22) & 0x01)]);
SetPixel(x + 2, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 8) & 0x07)]);
SetPixel(x + 3, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 8) & 0x07)]);
SetPixel(x + 4, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 9) & 0x07)]);
SetPixel(x + 5, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 9) & 0x07)]);
SetPixel(x + 6, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 10) & 0x07)]);
SetPixel(x + 7, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 10) & 0x07)]);
SetPixel(x + 8, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 11) & 0x07)]);
SetPixel(x + 9, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data >> 11) & 0x07)]);
SetPixel(x + 10, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x0F)]);
SetPixel(x + 11, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x0F)]);
SetPixel(x + 12, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data << 2) & 0x04) | ((data >> 13) & 0x03)]);
SetPixel(x + 13, y, ColorHires[((x & 0x02) << 3) | ((data >> 12) & 0x08) | ((data << 2) & 0x04) | ((data >> 13) & 0x03)]);
}
}
private void DrawNDHires(int address, int x, int y)
{
if (Machine.Settings.Video.IsMonochrome)
{
int data = _memory.ReadRamMainRegion02BF(address);
SetPixel(x + 0, y, data & 0x01);
SetPixel(x + 1, y, data & 0x01);
SetPixel(x + 2, y, data & 0x02);
SetPixel(x + 3, y, data & 0x02);
SetPixel(x + 4, y, data & 0x04);
SetPixel(x + 5, y, data & 0x04);
SetPixel(x + 6, y, data & 0x08);
SetPixel(x + 7, y, data & 0x08);
SetPixel(x + 8, y, data & 0x10);
SetPixel(x + 9, y, data & 0x10);
SetPixel(x + 10, y, data & 0x20);
SetPixel(x + 11, y, data & 0x20);
SetPixel(x + 12, y, data & 0x40);
SetPixel(x + 13, y, data & 0x40);
}
else
{
// 3 2 1 0
// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
//
// - - - - - - - - 0 0 0 0 0 0 0 0 + + + + + + + +
// X 1 0 X 6 5 4 3 2 1 0 X 1 0
int data = _memory.ReadRamMainRegion02BF(address) << 8;
if (x < Width - CellWidth)
{
data |= _memory.ReadRamMainRegion02BF(address + 1);
SetPixel(x + 14, y, ColorHires[((~x & 0x02) << 3) | ((data << 1) & 0x06) | ((data >> 14) & 0x01)]);
SetPixel(x + 15, y, ColorHires[((~x & 0x02) << 3) | ((data << 1) & 0x06) | ((data >> 14) & 0x01)]);
}
if (x > 0)
{
data |= _memory.ReadRamMainRegion02BF(address - 1) << 16;
SetPixel(x - 2, y, ColorHires[((~x & 0x02) << 3) | ((data >> 6) & 0x04) | ((data >> 21) & 0x03)]);
SetPixel(x - 1, y, ColorHires[((~x & 0x02) << 3) | ((data >> 6) & 0x04) | ((data >> 21) & 0x03)]);
}
SetPixel(x + 0, y, ColorHires[((x & 0x02) << 3) | ((data >> 7) & 0x06) | ((data >> 22) & 0x01)]);
SetPixel(x + 1, y, ColorHires[((x & 0x02) << 3) | ((data >> 7) & 0x06) | ((data >> 22) & 0x01)]);
SetPixel(x + 2, y, ColorHires[((~x & 0x02) << 3) | ((data >> 8) & 0x07)]);
SetPixel(x + 3, y, ColorHires[((~x & 0x02) << 3) | ((data >> 8) & 0x07)]);
SetPixel(x + 4, y, ColorHires[((x & 0x02) << 3) | ((data >> 9) & 0x07)]);
SetPixel(x + 5, y, ColorHires[((x & 0x02) << 3) | ((data >> 9) & 0x07)]);
SetPixel(x + 6, y, ColorHires[((~x & 0x02) << 3) | ((data >> 10) & 0x07)]);
SetPixel(x + 7, y, ColorHires[((~x & 0x02) << 3) | ((data >> 10) & 0x07)]);
SetPixel(x + 8, y, ColorHires[((x & 0x02) << 3) | ((data >> 11) & 0x07)]);
SetPixel(x + 9, y, ColorHires[((x & 0x02) << 3) | ((data >> 11) & 0x07)]);
SetPixel(x + 10, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x07)]);
SetPixel(x + 11, y, ColorHires[((~x & 0x02) << 3) | ((data >> 12) & 0x07)]);
SetPixel(x + 12, y, ColorHires[((x & 0x02) << 3) | ((data << 2) & 0x04) | ((data >> 13) & 0x03)]);
SetPixel(x + 13, y, ColorHires[((x & 0x02) << 3) | ((data << 2) & 0x04) | ((data >> 13) & 0x03)]);
}
}
private void DrawDHiresA(int address, int x, int y)
{
if (Machine.Settings.Video.IsMonochrome)
{
if ((x & 0x2) == 0x00) // even cell
{
int data = ((_memory.ReadRamMainRegion02BF(address) << 7) & 0x80) | (_memory.ReadRamAuxRegion02BF(address) & 0x7F);
SetPixel(x + 0, y, data & 0x01);
SetPixel(x + 1, y, data & 0x02);
SetPixel(x + 2, y, data & 0x04);
SetPixel(x + 3, y, data & 0x08);
SetPixel(x + 4, y, data & 0x10);
SetPixel(x + 5, y, data & 0x20);
SetPixel(x + 6, y, data & 0x40);
SetPixel(x + 7, y, data & 0x80);
}
else
{
int data = ((_memory.ReadRamMainRegion02BF(address) << 9) & 0xE00) | ((_memory.ReadRamAuxRegion02BF(address) << 2) & 0x1FC) |
((_memory.ReadRamMainRegion02BF(address - 1) >> 5) & 0x003);
SetPixel(x - 2, y, data & 0x01);
SetPixel(x - 1, y, data & 0x02);
SetPixel(x + 0, y, data & 0x04);
SetPixel(x + 1, y, data & 0x08);
SetPixel(x + 2, y, data & 0x10);
SetPixel(x + 3, y, data & 0x20);
SetPixel(x + 4, y, data & 0x40);
SetPixel(x + 5, y, data & 0x80);
SetPixel(x + 6, y, (data >> 8) & 0x01);
SetPixel(x + 7, y, (data >> 8) & 0x02);
SetPixel(x + 8, y, (data >> 8) & 0x04);
SetPixel(x + 9, y, (data >> 8) & 0x08);
}
}
else
{
if ((x & 0x2) == 0x00) // even cell
{
int data = ((_memory.ReadRamMainRegion02BF(address) << 7) & 0x80) | (_memory.ReadRamAuxRegion02BF(address) & 0x7F);
SetPixel(x + 0, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 1, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 2, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 3, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 4, y, ColorDHires0 | (data >> 4));
SetPixel(x + 5, y, ColorDHires0 | (data >> 4));
SetPixel(x + 6, y, ColorDHires0 | (data >> 4));
SetPixel(x + 7, y, ColorDHires0 | (data >> 4));
}
else
{
int data = ((_memory.ReadRamMainRegion02BF(address) << 9) & 0xE00) | ((_memory.ReadRamAuxRegion02BF(address) << 2) & 0x1FC) |
((_memory.ReadRamMainRegion02BF(address - 1) >> 5) & 0x003);
SetPixel(x - 2, y, ColorDHires0 | (data & 0x0F));
SetPixel(x - 1, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 0, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 1, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 2, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 3, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 4, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 5, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 6, y, ColorDHires0 | (data >> 8));
SetPixel(x + 7, y, ColorDHires0 | (data >> 8));
SetPixel(x + 8, y, ColorDHires0 | (data >> 8));
SetPixel(x + 9, y, ColorDHires0 | (data >> 8));
}
}
}
private void DrawDHiresM(int address, int x, int y)
{
if (Machine.Settings.Video.IsMonochrome)
{
if ((x & 0x2) == 0x02) // odd cell
{
int data = ((_memory.ReadRamMainRegion02BF(address) << 1) & 0xFE) | ((_memory.ReadRamAuxRegion02BF(address) >> 6) & 0x01);
SetPixel(x + 6, y, data & 0x01);
SetPixel(x + 7, y, data & 0x02);
SetPixel(x + 8, y, data & 0x04);
SetPixel(x + 9, y, data & 0x08);
SetPixel(x + 10, y, data & 0x10);
SetPixel(x + 11, y, data & 0x20);
SetPixel(x + 12, y, data & 0x40);
SetPixel(x + 13, y, data & 0x80);
}
else
{
int data = ((_memory.ReadRamAuxRegion02BF(address + 1) << 10) & 0xC00) | ((_memory.ReadRamMainRegion02BF(address) << 3) & 0x3F8) |
((_memory.ReadRamAuxRegion02BF(address) >> 4) & 0x007);
SetPixel(x + 4, y, data & 0x01);
SetPixel(x + 5, y, data & 0x02);
SetPixel(x + 6, y, data & 0x04);
SetPixel(x + 7, y, data & 0x08);
SetPixel(x + 8, y, data & 0x10);
SetPixel(x + 9, y, data & 0x20);
SetPixel(x + 10, y, data & 0x40);
SetPixel(x + 11, y, data & 0x80);
SetPixel(x + 12, y, (data >> 8) & 0x01);
SetPixel(x + 13, y, (data >> 8) & 0x02);
SetPixel(x + 14, y, (data >> 8) & 0x04);
SetPixel(x + 15, y, (data >> 8) & 0x08);
}
}
else
{
if ((x & 0x2) == 0x02) // odd cell
{
int data = ((_memory.ReadRamMainRegion02BF(address) << 1) & 0xFE) | ((_memory.ReadRamAuxRegion02BF(address) >> 6) & 0x01);
SetPixel(x + 6, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 7, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 8, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 9, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 10, y, ColorDHires0 | (data >> 4));
SetPixel(x + 11, y, ColorDHires0 | (data >> 4));
SetPixel(x + 12, y, ColorDHires0 | (data >> 4));
SetPixel(x + 13, y, ColorDHires0 | (data >> 4));
}
else
{
int data = ((_memory.ReadRamAuxRegion02BF(address + 1) << 10) & 0xC00) | ((_memory.ReadRamMainRegion02BF(address) << 3) & 0x3F8) |
((_memory.ReadRamAuxRegion02BF(address) >> 4) & 0x007);
SetPixel(x + 4, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 5, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 6, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 7, y, ColorDHires0 | (data & 0x0F));
SetPixel(x + 8, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 9, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 10, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 11, y, ColorDHires0 | ((data >> 4) & 0x0F));
SetPixel(x + 12, y, ColorDHires0 | (data >> 8));
SetPixel(x + 13, y, ColorDHires0 | (data >> 8));
SetPixel(x + 14, y, ColorDHires0 | (data >> 8));
SetPixel(x + 15, y, ColorDHires0 | (data >> 8));
}
}
}
#endregion
#region Flush Methods
private void FlushRowMode0(int y)
{
int address = (_memory.IsVideoPage2 ? 0x0800 : 0x0400) + AddressOffset[y];
for (int x = 0; x < CellColumns; x++)
{
if (_isCellDirty[CellColumns * y + x])
{
_isCellDirty[CellColumns * y + x] = false;
DrawLores(_memory.ReadRamMainRegion02BF(address + x), CellWidth * x, y); // lores
}
}
}
private void FlushRowMode1(int y)
{
int address = (_memory.IsVideoPage2 ? 0x0800 : 0x0400) + AddressOffset[y];
for (int x = 0; x < CellColumns; x++)
{
if (_isCellDirty[CellColumns * y + x])
{
_isCellDirty[CellColumns * y + x] = false;
DrawText40(_memory.ReadRamMainRegion02BF(address + x), CellWidth * x, y); // text40
}
}
}
private void FlushRowMode2(int y)
{
int address = (_memory.IsVideoPage2 ? 0x0800 : 0x0400) + AddressOffset[y];
for (int x = 0; x < 2 * CellColumns; x += 2)
{
if (_isCellDirty[CellColumns * y + x / 2])
{
_isCellDirty[CellColumns * y + x / 2] = false;
DrawText80(_memory.ReadRamAuxRegion02BF(address + x / 2), CellWidth / 2 * (x + 0), y); // text80
DrawText80(_memory.ReadRamMainRegion02BF(address + x / 2), CellWidth / 2 * (x + 1), y);
}
}
}
private void FlushRowMode3(int y)
{
if (y < MixedHeight)
{
FlushRowMode0(y); // lores
}
else
{
FlushRowMode1(y); // text40
}
}
private void FlushRowMode4(int y)
{
if (y < MixedHeight)
{
FlushRowMode0(y); // lores
}
else
{
FlushRowMode2(y); // text80
}
}
private void FlushRowMode5(int y)
{
int address = _memory.IsVideoPage2 ? 0x4000 : 0x2000;
for (int i = 0; i < CellHeight; i++, y++)
{
for (int x = 0; x < CellColumns; x++)
{
if (_isCellDirty[CellColumns * y + x])
{
_isCellDirty[CellColumns * y + x] = false;
DrawHires(address + AddressOffset[y] + x, CellWidth * x, y); // hires
}
}
}
}
private void FlushRowMode6(int y)
{
if (y < MixedHeight)
{
FlushRowMode5(y); // hires
}
else
{
FlushRowMode1(y); // text40
}
}
private void FlushRowMode7(int y)
{
if (y < MixedHeight)
{
FlushRowMode5(y); // hires
}
else
{
FlushRowMode2(y); // text80
}
}
private void FlushRowMode8(int y)
{
int address = (_memory.IsVideoPage2 ? 0x0800 : 0x0400) + AddressOffset[y];
for (int x = 0; x < CellColumns; x++)
{
if (_isCellDirty[CellColumns * y + x])
{
_isCellDirty[CellColumns * y + x] = false;
Draw7MLores(_memory.ReadRamMainRegion02BF(address + x), CellWidth * x, y); // 7mlores
}
}
}
private void FlushRowMode9(int y)
{
int address = (_memory.IsVideoPage2 ? 0x0800 : 0x0400) + AddressOffset[y];
for (int x = 0; x < 2 * CellColumns; x += 2)
{
if (_isCellDirty[CellColumns * y + x / 2])
{
_isCellDirty[CellColumns * y + x / 2] = false;
DrawDLores(_memory.ReadRamAuxRegion02BF(address + x / 2), CellWidth / 2 * (x + 0), y); // dlores
DrawDLores(_memory.ReadRamMainRegion02BF(address + x / 2), CellWidth / 2 * (x + 1), y);
}
}
}
private void FlushRowModeA(int y)
{
if (y < MixedHeight)
{
FlushRowMode8(y); // 7mlores
}
else
{
FlushRowMode1(y); // text40
}
}
private void FlushRowModeB(int y)
{
if (y < MixedHeight)
{
FlushRowMode9(y); // dlores
}
else
{
FlushRowMode2(y); // text80
}
}
private void FlushRowModeC(int y)
{
int address = _memory.IsVideoPage2 ? 0x4000 : 0x2000;
for (int i = 0; i < CellHeight; i++, y++)
{
for (int x = 0; x < CellColumns; x++)
{
if (_isCellDirty[CellColumns * y + x])
{
_isCellDirty[CellColumns * y + x] = false;
DrawNDHires(address + AddressOffset[y] + x, CellWidth * x, y); // ndhires
}
}
}
}
private void FlushRowModeD(int y)
{
int address = _memory.IsVideoPage2 ? 0x4000 : 0x2000;
for (int i = 0; i < CellHeight; i++, y++)
{
for (int x = 0; x < CellColumns; x++)
{
if (_isCellDirty[CellColumns * y + x])
{
_isCellDirty[CellColumns * y + x] = false;
DrawDHiresA(address + AddressOffset[y] + x, CellWidth * x, y); // dhires
DrawDHiresM(address + AddressOffset[y] + x, CellWidth * x, y);
}
}
}
}
private void FlushRowModeE(int y)
{
if (y < MixedHeight)
{
FlushRowModeC(y); // ndhires
}
else
{
FlushRowMode1(y); // text40
}
}
private void FlushRowModeF(int y)
{
if (y < MixedHeight)
{
FlushRowModeD(y); // dhires
}
else
{
FlushRowMode2(y); // text80
}
}
#endregion
private void FlushRowEvent()
{
int y = (_cyclesPerVSync - _cyclesPerVBlankPreset - Machine.Events.FindEvent(_resetVSyncEvent)) / CyclesPerHSync;
FlushRowMode[_memory.VideoMode](y - CellHeight); // in arrears
if (y < Height)
{
Machine.Events.AddEvent(CyclesPerFlush, _flushRowEvent);
}
else
{
IsVBlank = true;
Machine.Events.AddEvent(_cyclesPerVBlank, _leaveVBlankEvent);
}
}
private void FlushScreen()
{
Action<int> flushRowMode = FlushRowMode[_memory.VideoMode];
for (int y = 0; y < Height; y += CellHeight)
{
flushRowMode(y);
}
}
private void InverseTextEvent()
{
_isTextInversed = !_isTextInversed;
DirtyScreenText();
Machine.Events.AddEvent(_cyclesPerFlash, _inverseTextEvent);
}
private void LeaveVBlankEvent()
{
IsVBlank = false;
Machine.Events.AddEvent(CyclesPerFlush, _flushRowEvent);
}
private void ResetVSyncEvent()
{
UpdateSettings();
var handler = VSync;
if (handler != null)
{
handler(this, EventArgs.Empty);
}
Machine.Events.AddEvent(_cyclesPerVSync, _resetVSyncEvent);
}
private void SetPixel(int x, int y, int color)
{
_videoService.SetPixel(x, 2 * y, _colorPalette[color]);
}
private void UpdateSettings()
{
var settings = Machine.Settings.Video;
_colorPalette[ColorMono00] = settings.Color.Black;
_colorPalette[ColorMono01] = settings.Color.Monochrome;
_colorPalette[ColorMono02] = settings.Color.Monochrome;
_colorPalette[ColorMono04] = settings.Color.Monochrome;
_colorPalette[ColorMono08] = settings.Color.Monochrome;
_colorPalette[ColorMono10] = settings.Color.Monochrome;
_colorPalette[ColorMono20] = settings.Color.Monochrome;
_colorPalette[ColorMono40] = settings.Color.Monochrome;
_colorPalette[ColorMono80] = settings.Color.Monochrome;
_colorPalette[ColorWhite00] = settings.Color.Black;
_colorPalette[ColorWhite01] = settings.Color.White;
_colorPalette[ColorWhite02] = settings.Color.White;
_colorPalette[ColorWhite04] = settings.Color.White;
_colorPalette[ColorWhite08] = settings.Color.White;
_colorPalette[ColorWhite10] = settings.Color.White;
_colorPalette[ColorWhite20] = settings.Color.White;
_colorPalette[ColorWhite40] = settings.Color.White;
_colorPalette[ColorWhite80] = settings.Color.White;
_colorPalette[ColorDHires0] = settings.Color.Black;
_colorPalette[ColorDHires1] = settings.Color.DarkBlue;
_colorPalette[ColorDHires2] = settings.Color.DarkGreen;
_colorPalette[ColorDHires3] = settings.Color.MediumBlue;
_colorPalette[ColorDHires4] = settings.Color.Brown;
_colorPalette[ColorDHires5] = settings.Color.LightGrey;
_colorPalette[ColorDHires6] = settings.Color.Green;
_colorPalette[ColorDHires7] = settings.Color.Aquamarine;
_colorPalette[ColorDHires8] = settings.Color.DeepRed;
_colorPalette[ColorDHires9] = settings.Color.Purple;
_colorPalette[ColorDHiresA] = settings.Color.DarkGrey;
_colorPalette[ColorDHiresB] = settings.Color.LightBlue;
_colorPalette[ColorDHiresC] = settings.Color.Orange;
_colorPalette[ColorDHiresD] = settings.Color.Pink;
_colorPalette[ColorDHiresE] = settings.Color.Yellow;
_colorPalette[ColorDHiresF] = settings.Color.White;
_scannerOptions = settings.ScannerOptions;
if ((_scannerOptions & ScannerOptions.Pal) != 0)
{
_vCountPreset = VCountPresetPal;
_vLineLeaveVBlank = VLineLeaveVBlankPal;
}
else
{
_vCountPreset = VCountPresetNtsc;
_vLineLeaveVBlank = VLineLeaveVBlankNtsc;
}
_cyclesPerVBlank = (_vLineLeaveVBlank - VLineEnterVBlank) * CyclesPerHSync;
_cyclesPerVBlankPreset = (_vLineLeaveVBlank - VLineTriggerPreset) * CyclesPerHSync; // cycles during vblank after vcount preset [3-15, 3-16]
_cyclesPerVSync = _vLineLeaveVBlank * CyclesPerHSync;
_cyclesPerFlash = VSyncsPerFlash * _cyclesPerVSync;
if (_videoService.IsFullScreen != settings.IsFullScreen)
{
_videoService.ToggleFullScreen();
}
}
public bool IsVBlank { get; private set; }
public long TicksPerVSync { get { return TimeSpan.FromSeconds((double)_cyclesPerVSync / CyclesPerSecond).Ticks; } }
public event EventHandler VSync;
private Action _flushRowEvent;
private Action _inverseTextEvent;
private Action _leaveVBlankEvent;
private Action _resetVSyncEvent;
private Memory _memory;
private VideoService _videoService;
private ushort[] _charSet;
private uint[] _colorPalette = new uint[ColorPaletteCount];
private bool[] _isCellDirty = new bool[Height * CellColumns + 1]; // includes sentinel
private bool _isTextInversed;
private int _cyclesPerVBlank;
private int _cyclesPerVBlankPreset;
private int _cyclesPerVSync;
private int _cyclesPerFlash;
private int _vCountPreset;
private int _vLineLeaveVBlank;
private ScannerOptions _scannerOptions;
}
}
Reference in New Issue View Git Blame Copy Permalink