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d_gng.cpp: Ghouls n Ghosts: buffer the sprites at the right time to fix sprite lag (notice the gravestones while walking), on first boot: fill the palette with something to see the boot messages

This commit is contained in:
dinkc64 2015-09-24 22:19:38 +00:00
parent 4183730172
commit 5eea09129b
1 changed files with 14 additions and 4 deletions
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14
src/burn/drv/pre90s/d_gng.cpp
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@ -862,6 +862,16 @@ void __fastcall DrvGngZ80Write(UINT16 a, UINT8 d)
}
}
static void DrvRandPalette()
{ // On first boot we fill the palette with some arbatrary values to see the boot-up messages
DrvPaletteRam1[0] = 0x00;
DrvPaletteRam2[0] = 0x00;
for (INT32 i = 1; i < 0x100; i++) {
DrvPaletteRam1[i] = 0xaf;
DrvPaletteRam2[i] = 0x5a;
}
}
static INT32 CharPlaneOffsets[2] = { 4, 0 };
static INT32 CharXOffsets[8] = { 0, 1, 2, 3, 8, 9, 10, 11 };
static INT32 CharYOffsets[8] = { 0, 16, 32, 48, 64, 80, 96, 112 };
@ -977,6 +987,7 @@ static INT32 DrvInit()
BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_3, 0.40, BURN_SND_ROUTE_BOTH);
GenericTilesInit();
DrvRandPalette();
// Reset the driver
DrvDoReset();
@ -1371,6 +1382,7 @@ static INT32 DrvFrame()
nCyclesSegment = nNext - nCyclesDone[nCurrentCPU];
nCyclesDone[nCurrentCPU] += M6809Run(nCyclesSegment);
if (i == 22) {
memcpy(DrvSpriteRamBuffer, DrvSpriteRam, 0x200);
M6809SetIRQLine(0, CPU_IRQSTATUS_AUTO);
}
M6809Close();
@ -1394,8 +1406,6 @@ static INT32 DrvFrame()
if (pBurnDraw) DrvDraw();
memcpy(DrvSpriteRamBuffer, DrvSpriteRam, 0x200);
return 0;
}