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TIA: Removed code for cosmic ark starfield (to be added back later, in a cleaner way). Changed the definition of a frame to start with the first scanline where VSYNC is disabled. 

MOS6507: Fixed a copy-paste mistake with SBC instructions where it would remove another cycle. This fixes the screen bounce issue with pitfall.
This commit is contained in:
pjgat09 2012-03-20 22:45:15 +00:00
parent bb7e320f92
commit 5e65c7e977
2 changed files with 16 additions and 20 deletions
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8
BizHawk.Emulation/CPUs/MOS 6507/Execute.cs
View File

@ -1230,7 +1230,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{
@ -1265,7 +1264,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{
@ -1300,7 +1298,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{
@ -1334,7 +1331,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{
@ -1379,7 +1375,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{
@ -1407,7 +1402,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{
@ -1446,7 +1440,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{
@ -1481,7 +1474,6 @@ FlagT = true;// this seems wrong
FlagV = ((A ^ value8) & (A ^ temp) & 0x80) != 0;
FlagC = (hi & 0xFF00) == 0;
A = (byte)((lo & 0x0F) | (hi & 0xF0));
PendingCycles--;
}
else
{

28
BizHawk.Emulation/Consoles/Atari/2600/TIA.cs
View File

@ -244,8 +244,6 @@ namespace BizHawk.Emulation.Consoles.Atari
public bool missile1Latch;
public bool ballLatch;
public bool missile0inf;
public byte hmoveDelayCnt;
public byte hmoveCnt;
@ -265,6 +263,7 @@ namespace BizHawk.Emulation.Consoles.Atari
bool vblankEnabled = false;
bool vsyncEnabled = false;
List<uint[]> scanlinesBuffer = new List<uint[]>();
uint[] scanline = new uint[160];
@ -462,7 +461,6 @@ namespace BizHawk.Emulation.Consoles.Atari
hmove.player0Cnt = 0;
hmove.missile0Latch = true;
hmove.missile0inf = false;
hmove.missile0Cnt = 0;
hmove.player1Latch = true;
@ -512,7 +510,7 @@ namespace BizHawk.Emulation.Consoles.Atari
{ }
// If the move counter still has a bit in common with the HM register
if (hmove.missile0inf || ((15 - hmove.missile0Cnt) ^ ((player0.missile.HM & 0x07) | ((~(player0.missile.HM & 0x08)) & 0x08))) != 0x0F)
if (((15 - hmove.missile0Cnt) ^ ((player0.missile.HM & 0x07) | ((~(player0.missile.HM & 0x08)) & 0x08))) != 0x0F)
{
// "Clock-Stuffing"
player0.missile.tick();
@ -520,10 +518,6 @@ namespace BizHawk.Emulation.Consoles.Atari
// Increase by 1, max of 15
hmove.missile0Cnt++;
hmove.missile0Cnt %= 16;
if (hmove.missile0Cnt == 0)
{
hmove.missile0inf = true;
}
}
else
{
@ -699,14 +693,24 @@ namespace BizHawk.Emulation.Consoles.Atari
if ((value & 0x02) != 0)
{
// Frame is complete, output to buffer
outputFrame();
scanlinesBuffer.Clear();
frameComplete = true;
hsyncCnt = 0;
vsyncEnabled = true;
}
else
{
// When VSYNC is disabled, this will be the first line of the new frame
Console.WriteLine("TIA VSYNC Off");
// write to frame buffer
outputFrame();
// Clear all from last frame
scanlinesBuffer.Clear();
//Frame is done
frameComplete = true;
vsyncEnabled = false;
// Do not reset hsync, since we're on the first line of the new frame
//hsyncCnt = 0;
}
}
else if (maskedAddr == 0x01) // VBLANK