static int DrvFrame()
{
int nInterleave = 10;
int nSoundBufferPos = 0;
if (DrvReset) DrvDoReset();
DrvMakeInputs();
nCyclesTotal[0] = 28638000 / 60;
nCyclesDone[0] = 0;
for (int i = 0; i < nInterleave; i++) {
int nCurrentCPU, nNext;
nCurrentCPU = 0;
Sh2Open(0);
nNext = (i + 1) * nCyclesTotal[nCurrentCPU] / nInterleave;
nCyclesSegment = nNext - nCyclesDone[nCurrentCPU];
nCyclesDone[nCurrentCPU] += Sh2Run(nCyclesSegment);
if (i == 5) Sh2SetIRQLine(1, SH2_IRQSTATUS_AUTO);
if (i == 9) Sh2SetIRQLine(5, SH2_IRQSTATUS_AUTO);
Sh2Close();
}
if (pBurnDraw) DrvDraw();
return 0;
}
static int DrvDoReset()
{
Sh2Open(0);
Sh2Reset(*(unsigned int *)(DrvBiosRom + 0), *(unsigned int *)(DrvBiosRom + 4));
Sh2Close();
return 0;
}
static void cpu_close()
{
switch (nCpuType)
{
case 1:
SekClose();
break;
case 2:
VezClose();
break;
case 3:
Sh2Close();
break;
case 4:
M6502Close();
break;
case 5:
ZetClose();
break;
case 6:
M6809Close();
break;
case 7:
HD6309Close();
break;
case 8:
break;
case 9:
s2650Close();
break;
}
}
static int CyvernInit()
{
int nRet = 0, nLen;
BurnSetRefreshRate(59.5971);
// Allocate and Blank all required memory
Mem = NULL;
MemIndex();
nLen = MemEnd - (unsigned char *)0;
if ((Mem = (unsigned char *)malloc(nLen)) == NULL) return 1;
memset(Mem, 0, nLen);
MemIndex();
DrvTempRom = (unsigned char *)malloc(0x800000);
// Load BIOS Rom
nRet = BurnLoadRom(DrvBiosRom + 0x000000, 0, 1); if (nRet != 0) return 1;
be_to_le(DrvBiosRom, 0x00080000);
// Load Program Rom
nRet = BurnLoadRom(DrvPrgRom + 0x000000, 1, 2); if (nRet != 0) return 1;
nRet = BurnLoadRom(DrvPrgRom + 0x000001, 2, 2); if (nRet != 0) return 1;
be_to_le(DrvPrgRom, 0x00200000);
free(DrvTempRom);
// Setup the 68000 emulation
Sh2Init(1);
Sh2Open(0);
Sh2MapMemory(DrvBiosRom , 0x00000000, 0x0007ffff, SM_ROM);
Sh2MapMemory(DrvSpriteRam , 0x02000000, 0x02003fff, SM_RAM);
Sh2MapMemory(DrvSpriteRegs , 0x02100000, 0x0210003f, SM_RAM);
Sh2MapMemory(DrvTileRegs , 0x02400000, 0x0240007f, SM_RAM);
Sh2MapMemory(DrvTileARam , 0x02500000, 0x02503fff, SM_RAM);
Sh2MapMemory(DrvTileBRam , 0x02504000, 0x02507fff, SM_RAM);
Sh2MapMemory(DrvTileLineRam , 0x02600000, 0x02607fff, SM_RAM);
Sh2MapMemory(DrvPaletteRegs , 0x02a00000, 0x02a0001f, SM_RAM);
Sh2MapMemory(DrvPaletteRam , 0x02a40000, 0x02a5ffff, SM_RAM);
Sh2MapMemory(DrvPrgRom , 0x04000000, 0x041fffff, SM_ROM);
Sh2MapMemory(DrvTileBTilesRam , 0x04800000, 0x0483ffff, SM_RAM);
Sh2MapMemory(DrvPrgRam , 0x06000000, 0x06ffffff, SM_RAM);
// Sh2MapMemory(DrvPrgRam , 0x06000000, 0x06ffffff, SM_WRITE);
Sh2MapMemory(DrvCacheRam , 0xc0000000, 0xc0000fff, SM_RAM);
// Sh2MapHandler(1 , 0x06000028, 0x0600002b, SM_READ);
Sh2SetReadByteHandler (0, CyvernReadByte);
Sh2SetReadWordHandler (0, CyvernReadWord);
Sh2SetReadLongHandler (0, CyvernReadLong);
Sh2SetWriteByteHandler(0, CyvernWriteByte);
Sh2SetWriteWordHandler(0, CyvernWriteWord);
Sh2SetWriteLongHandler(0, CyvernWriteLong);
// Sh2SetReadByteHandler (1, BiosSkipReadByte);
// Sh2SetReadWordHandler (1, BiosSkipReadWord);
// Sh2SetReadLongHandler (1, BiosSkipReadLong);
Sh2Close();
GenericTilesInit();
// Reset the driver
DrvDoReset();
return 0;
}
