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trying to add movie support

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@3 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2006-12-21 22:55:45 +00:00
parent cc68a136aa
commit 4f67228034
6 changed files with 215 additions and 107 deletions
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40
Pico/VideoPort.c
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@ -53,7 +53,7 @@ static unsigned int VideoRead()
case 8: d=Pico.cram [a&0x003f]; break;
case 4: d=Pico.vsram[a&0x003f]; break;
}
AutoIncrement();
return d;
}
@ -99,22 +99,26 @@ static void DmaSlow(int len)
source|=Pico.video.reg[0x16]<<9;
source|=Pico.video.reg[0x17]<<17;
//dprintf("DmaSlow[%i] %06x->%04x len %i inc=%i blank %i [%i|%i]", Pico.video.type, source, a, len, inc,
// (Pico.video.status&8)||!(Pico.video.reg[1]&0x40), Pico.m.scanline, SekCyclesDone());
dprintf("DmaSlow[%i] %06x->%04x len %i inc=%i blank %i [%i|%i]", Pico.video.type, source, a, len, inc,
(Pico.video.status&8)||!(Pico.video.reg[1]&0x40), Pico.m.scanline, SekCyclesDone());
if ((source&0xe00000)==0xe00000) { pd=(u16 *)(Pico.ram+(source&0xfffe)); pdend=(u16 *)(Pico.ram+0x10000); } // Ram
else if(source<Pico.romsize) { pd=(u16 *)(Pico.rom+(source&~1)); pdend=(u16 *)(Pico.rom+Pico.romsize); } // Rom
else return; // Invalid source address
#if 0
// CPU is stopped during DMA, so we burn some cycles to compensate that
if((Pico.video.status&8)||!(Pico.video.reg[1]&0x40)) { // vblank?
burn = (len*(((488<<8)/167))>>8); // very approximate
if(!(Pico.video.status&8)) burn+=burn>>1; // a hack for Legend of Galahad
} else burn = DmaSlowBurn(len);
SekCyclesBurn(burn);
#else
Pico.m.dma_bytes += len;
#endif
if(!(Pico.video.status&8))
SekEndRun(0);
//dprintf("DmaSlow burn: %i @ %06x", burn, SekPc);
// dprintf("DmaSlow burn: %i @ %06x", burn, SekPc);
switch (Pico.video.type)
{
@ -132,10 +136,10 @@ static void DmaSlow(int len)
}
rendstatus|=0x10;
break;
case 3: // cram
//dprintf("DmaSlow[%i] %06x->%04x len %i inc=%i blank %i [%i|%i]", Pico.video.type, source, a, len, inc,
// (Pico.video.status&8)||!(Pico.video.reg[1]&0x40), Pico.m.scanline, SekCyclesDone());
dprintf("DmaSlow[%i] %06x->%04x len %i inc=%i blank %i [%i|%i]", Pico.video.type, source, a, len, inc,
(Pico.video.status&8)||!(Pico.video.reg[1]&0x40), Pico.m.scanline, SekCyclesDone());
Pico.m.dirtyPal = 1;
r = Pico.cram;
for(a2=a&0x7f; len; len--)
@ -177,7 +181,10 @@ static void DmaCopy(int len)
unsigned char *vrs;
unsigned char inc=Pico.video.reg[0xf];
int source;
//dprintf("DmaCopy len %i [%i|%i]", len, Pico.m.scanline, SekCyclesDone());
dprintf("DmaCopy len %i [%i|%i]", len, Pico.m.scanline, SekCyclesDone());
Pico.m.dma_bytes += len;
Pico.video.status|=2; // dma busy
source =Pico.video.reg[0x15];
source|=Pico.video.reg[0x16]<<8;
@ -205,9 +212,12 @@ static void DmaFill(int data)
unsigned char *vr=(unsigned char *) Pico.vram;
unsigned char high = (unsigned char) (data >> 8);
unsigned char inc=Pico.video.reg[0xf];
len=GetDmaLength();
//dprintf("DmaFill len %i inc %i [%i|%i]", len, inc, Pico.m.scanline, SekCyclesDone());
dprintf("DmaFill len %i inc %i [%i|%i]", len, inc, Pico.m.scanline, SekCyclesDone());
Pico.m.dma_bytes += len;
Pico.video.status|=2; // dma busy
// from Charles MacDonald's genvdp.txt:
// Write lower byte to address specified
@ -273,7 +283,7 @@ void PicoVideoWrite(unsigned int a,unsigned short d)
a&=0x1c;
if (a==0x00) // Data port 0 or 2
{
{
if (pvid->pending) CommandChange();
pvid->pending=0;
@ -351,7 +361,7 @@ void PicoVideoWrite(unsigned int a,unsigned short d)
unsigned int PicoVideoRead(unsigned int a)
{
unsigned int d=0;
a&=0x1c;
if (a==0x00) // data port
@ -362,12 +372,12 @@ unsigned int PicoVideoRead(unsigned int a)
if (a==0x04) // control port
{
//dprintf("sr_read @ %06x [%i|%i]", SekPc, Pico.m.scanline, SekCyclesDone());
d=Pico.video.status;
if(PicoOpt&0x10) d|=0x0020; // sprite collision (Shadow of the Beast)
if(Pico.m.rotate++&8) d|=0x0100; else d|=0x0200; // Toggle fifo full empty (who uses that stuff?)
if(!(Pico.video.reg[1]&0x40)) d|=0x0008; // set V-Blank if display is disabled
if(SekCyclesLeft < 84+4) d|=0x0004; // H-Blank (Sonic3 vs)
dprintf("sr_read %04x @ %06x [%i|%i]", d, SekPc, Pico.m.scanline, SekCyclesDone());
Pico.video.pending=0; // ctrl port reads clear write-pending flag (Charles MacDonald)
@ -387,7 +397,7 @@ unsigned int PicoVideoRead(unsigned int a)
// |---------------------|--------------------------|
// E4 (hc[0x43]==0) 07 B1 // 40
// E8 (hc[0x45]==0) 05 91 // 32
// check: Sonic 3D Blast bonus, Cannon Fodder, Chase HQ II, 3 Ninjas kick back, Road Rash 3, Skitchin', Wheel of Fortune
if ((a&0x1c)==0x08)
{
@ -420,7 +430,7 @@ unsigned int PicoVideoRead(unsigned int a)
if (d&0xf00) d|= 1;
}
//dprintf("hv: %02x %02x (%i) @ %06x", hc, d, SekCyclesDone(), SekPc);
dprintf("hv: %02x %02x (%i) @ %06x", hc, d, SekCyclesDone(), SekPc);
d&=0xff; d<<=8;
d|=hc;
goto end;