// This is part of Pico Library\r
\r
// (c) Copyright 2004 Dave, All rights reserved.\r
-// (c) Copyright 2006 notaz, All rights reserved.\r
+// (c) Copyright 2006-2007, Grazvydas "notaz" Ignotas\r
// Free for non-commercial use.\r
\r
// For commercial use, separate licencing terms must be obtained.\r
\r
\r
#include "PicoInt.h"\r
+#include "cd/gfx_cd.h"\r
\r
extern const unsigned char hcounts_32[];\r
extern const unsigned char hcounts_40[];\r
extern const unsigned short vcounts[];\r
extern int rendstatus;\r
\r
+#ifndef UTYPES_DEFINED\r
+typedef unsigned char u8;\r
typedef unsigned short u16;\r
+typedef unsigned int u32;\r
+#define UTYPES_DEFINED\r
+#endif\r
\r
\r
-static __inline void AutoIncrement()\r
+static __inline void AutoIncrement(void)\r
{\r
Pico.video.addr=(unsigned short)(Pico.video.addr+Pico.video.reg[0xf]);\r
}\r
Pico.vram [(a>>1)&0x7fff]=d;\r
rendstatus|=0x10; break;\r
case 3: Pico.m.dirtyPal = 1;\r
- //dprintf("w[%i] @ %04x, inc=%i [%i|%i]", Pico.video.type, a, Pico.video.reg[0xf], Pico.m.scanline, SekCyclesDone());\r
Pico.cram [(a>>1)&0x003f]=d; break; // wraps (Desert Strike)\r
case 5: Pico.vsram[(a>>1)&0x003f]=d; break;\r
+ default:elprintf(EL_ANOMALY, "VDP write %04x with bad type %i", d, Pico.video.type); break;\r
}\r
\r
//dprintf("w[%i] @ %04x, inc=%i [%i|%i]", Pico.video.type, a, Pico.video.reg[0xf], Pico.m.scanline, SekCyclesDone());\r
AutoIncrement();\r
}\r
\r
-static unsigned int VideoRead()\r
+static unsigned int VideoRead(void)\r
{\r
unsigned int a=0,d=0;\r
\r
case 0: d=Pico.vram [a&0x7fff]; break;\r
case 8: d=Pico.cram [a&0x003f]; break;\r
case 4: d=Pico.vsram[a&0x003f]; break;\r
+ default:elprintf(EL_ANOMALY, "VDP read with bad type %i", Pico.video.type); break;\r
}\r
\r
AutoIncrement();\r
return d;\r
}\r
\r
-// calculate the number of cycles 68k->VDP dma operation would take\r
-static int DmaSlowBurn(int len)\r
-{\r
- // test: Legend of Galahad, Time Killers\r
- int burn,maxlen,line=Pico.m.scanline;\r
-\r
- if(line == -1) line=vcounts[SekCyclesDone()>>8];\r
- maxlen=(224-line)*18;\r
- if(len <= maxlen)\r
- burn = len*(((488<<8)/18))>>8;\r
- else {\r
- burn = maxlen*(((488<<8)/18))>>8;\r
- burn += (len-maxlen)*(((488<<8)/180))>>8;\r
- }\r
-\r
- return burn;\r
-}\r
-\r
-static int GetDmaLength()\r
+static int GetDmaLength(void)\r
{\r
struct PicoVideo *pvid=&Pico.video;\r
int len=0;\r
u16 *pd=0, *pdend, *r;\r
unsigned int a=Pico.video.addr, a2, d;\r
unsigned char inc=Pico.video.reg[0xf];\r
- unsigned int source, burn;\r
+ unsigned int source;\r
\r
source =Pico.video.reg[0x15]<<1;\r
source|=Pico.video.reg[0x16]<<9;\r
source|=Pico.video.reg[0x17]<<17;\r
\r
- dprintf("DmaSlow[%i] %06x->%04x len %i inc=%i blank %i [%i|%i]", Pico.video.type, source, a, len, inc,\r
- (Pico.video.status&8)||!(Pico.video.reg[1]&0x40), Pico.m.scanline, SekCyclesDone());\r
-\r
- if ((source&0xe00000)==0xe00000) { pd=(u16 *)(Pico.ram+(source&0xfffe)); pdend=(u16 *)(Pico.ram+0x10000); } // Ram\r
- else if(source<Pico.romsize) { pd=(u16 *)(Pico.rom+(source&~1)); pdend=(u16 *)(Pico.rom+Pico.romsize); } // Rom\r
- else return; // Invalid source address\r
-\r
-#if 0\r
- // CPU is stopped during DMA, so we burn some cycles to compensate that\r
- if((Pico.video.status&8)||!(Pico.video.reg[1]&0x40)) { // vblank?\r
- burn = (len*(((488<<8)/167))>>8); // very approximate\r
- if(!(Pico.video.status&8)) burn+=burn>>1; // a hack for Legend of Galahad\r
- } else burn = DmaSlowBurn(len);\r
- SekCyclesBurn(burn);\r
-#else\r
- Pico.m.dma_bytes += len;\r
-#endif\r
- if(!(Pico.video.status&8))\r
- SekEndRun(0);\r
-// dprintf("DmaSlow burn: %i @ %06x", burn, SekPc);\r
+ elprintf(EL_VDPDMA, "DmaSlow[%i] %06x->%04x len %i inc=%i blank %i [%i] @ %06x",\r
+ Pico.video.type, source, a, len, inc, (Pico.video.status&8)||!(Pico.video.reg[1]&0x40),\r
+ SekCyclesDone(), SekPc);\r
+\r
+ if(Pico.m.scanline != -1) {\r
+ Pico.m.dma_xfers += len;\r
+ if ((PicoMCD&1) && (PicoOpt & 0x2000)) SekCyclesBurn(CheckDMA());\r
+ else SekSetCyclesLeftNoMCD(SekCyclesLeftNoMCD - CheckDMA());\r
+ } else {\r
+ // be approximate in non-accurate mode\r
+ SekSetCyclesLeft(SekCyclesLeft - (len*(((488<<8)/167))>>8));\r
+ }\r
+\r
+ if ((source&0xe00000)==0xe00000) { // Ram\r
+ pd=(u16 *)(Pico.ram+(source&0xfffe));\r
+ pdend=(u16 *)(Pico.ram+0x10000);\r
+ } else if(PicoMCD & 1) {\r
+ elprintf(EL_VDPDMA, "DmaSlow CD, r3=%02x", Pico_mcd->s68k_regs[3]);\r
+ if(source<0x20000) { // Bios area\r
+ pd=(u16 *)(Pico_mcd->bios+(source&~1));\r
+ pdend=(u16 *)(Pico_mcd->bios+0x20000);\r
+ } else if ((source&0xfc0000)==0x200000) { // Word Ram\r
+ source -= 2;\r
+ if (!(Pico_mcd->s68k_regs[3]&4)) { // 2M mode\r
+ pd=(u16 *)(Pico_mcd->word_ram2M+(source&0x3fffe));\r
+ pdend=(u16 *)(Pico_mcd->word_ram2M+0x40000);\r
+ } else {\r
+ if (source < 0x220000) { // 1M mode\r
+ int bank = Pico_mcd->s68k_regs[3]&1;\r
+ pd=(u16 *)(Pico_mcd->word_ram1M[bank]+(source&0x1fffe));\r
+ pdend=(u16 *)(Pico_mcd->word_ram1M[bank]+0x20000);\r
+ } else {\r
+ DmaSlowCell(source, a, len, inc);\r
+ return;\r
+ }\r
+ }\r
+ } else if ((source&0xfe0000)==0x020000) { // Prg Ram\r
+ u8 *prg_ram = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
+ pd=(u16 *)(prg_ram+(source&0x1fffe));\r
+ pdend=(u16 *)(prg_ram+0x20000);\r
+ } else {\r
+ elprintf(EL_VDPDMA|EL_ANOMALY, "DmaSlow FIXME: unsupported src");\r
+ return;\r
+ }\r
+ } else {\r
+ if(source<Pico.romsize) { // Rom\r
+ pd=(u16 *)(Pico.rom+(source&~1));\r
+ pdend=(u16 *)(Pico.rom+Pico.romsize);\r
+ } else {\r
+ elprintf(EL_VDPDMA|EL_ANOMALY, "DmaSlow: invalid dma src");\r
+ return;\r
+ }\r
+ }\r
+\r
+ // overflow protection, might break something..\r
+ if (len > pdend - pd) {\r
+ len = pdend - pd;\r
+ elprintf(EL_VDPDMA|EL_ANOMALY, "DmaSlow overflow");\r
+ }\r
\r
switch (Pico.video.type)\r
{\r
case 1: // vram\r
r = Pico.vram;\r
- for(; len; len--)\r
+ if (inc == 2 && !(a&1) && a+len*2 < 0x10000)\r
{\r
- d=*pd++;\r
- if(a&1) d=(d<<8)|(d>>8);\r
- r[a>>1] = (u16)d; // will drop the upper bits\r
- // AutoIncrement\r
- a=(u16)(a+inc);\r
- // didn't src overlap?\r
- if(pd >= pdend) pd-=0x8000; // should be good for RAM, bad for ROM\r
+ // most used DMA mode\r
+ memcpy16(r + (a>>1), pd, len);\r
+ a += len*2;\r
+ }\r
+ else\r
+ {\r
+ for(; len; len--)\r
+ {\r
+ d=*pd++;\r
+ if(a&1) d=(d<<8)|(d>>8);\r
+ r[a>>1] = (u16)d; // will drop the upper bits\r
+ // AutoIncrement\r
+ a=(u16)(a+inc);\r
+ // didn't src overlap?\r
+ //if(pd >= pdend) pd-=0x8000; // should be good for RAM, bad for ROM\r
+ }\r
}\r
rendstatus|=0x10;\r
break;\r
\r
case 3: // cram\r
- dprintf("DmaSlow[%i] %06x->%04x len %i inc=%i blank %i [%i|%i]", Pico.video.type, source, a, len, inc,\r
- (Pico.video.status&8)||!(Pico.video.reg[1]&0x40), Pico.m.scanline, SekCyclesDone());\r
Pico.m.dirtyPal = 1;\r
r = Pico.cram;\r
for(a2=a&0x7f; len; len--)\r
{\r
- r[a2>>1] = (u16)*pd++;; // bit 0 is ignored\r
+ r[a2>>1] = (u16)*pd++; // bit 0 is ignored\r
// AutoIncrement\r
a2+=inc;\r
// didn't src overlap?\r
- if(pd >= pdend) pd-=0x8000;\r
+ //if(pd >= pdend) pd-=0x8000;\r
// good dest?\r
if(a2 >= 0x80) break; // Todds Adventures in Slime World / Andre Agassi tennis\r
}\r
// AutoIncrement\r
a2+=inc;\r
// didn't src overlap?\r
- if(pd >= pdend) pd-=0x8000;\r
+ //if(pd >= pdend) pd-=0x8000;\r
// good dest?\r
if(a2 >= 0x80) break;\r
}\r
a=(a&0xff00)|a2;\r
break;\r
+\r
+ default:\r
+ elprintf(EL_VDPDMA|EL_ANOMALY, "DMA with bad type %i", Pico.video.type);\r
+ break;\r
}\r
// remember addr\r
Pico.video.addr=(u16)a;\r
unsigned char *vrs;\r
unsigned char inc=Pico.video.reg[0xf];\r
int source;\r
- dprintf("DmaCopy len %i [%i|%i]", len, Pico.m.scanline, SekCyclesDone());\r
+ elprintf(EL_VDPDMA, "DmaCopy len %i [%i]", len, SekCyclesDone());\r
\r
- Pico.m.dma_bytes += len;\r
- Pico.video.status|=2; // dma busy\r
+ Pico.m.dma_xfers += len;\r
+ if(Pico.m.scanline != -1)\r
+ Pico.video.status|=2; // dma busy\r
\r
source =Pico.video.reg[0x15];\r
source|=Pico.video.reg[0x16]<<8;\r
unsigned char inc=Pico.video.reg[0xf];\r
\r
len=GetDmaLength();\r
- dprintf("DmaFill len %i inc %i [%i|%i]", len, inc, Pico.m.scanline, SekCyclesDone());\r
+ elprintf(EL_VDPDMA, "DmaFill len %i inc %i [%i]", len, inc, SekCyclesDone());\r
\r
- Pico.m.dma_bytes += len;\r
- Pico.video.status|=2; // dma busy\r
+ Pico.m.dma_xfers += len;\r
+ if(Pico.m.scanline != -1)\r
+ Pico.video.status|=2; // dma busy (in accurate mode)\r
\r
// from Charles MacDonald's genvdp.txt:\r
// Write lower byte to address specified\r
rendstatus|=0x10;\r
}\r
\r
-static void CommandDma()\r
+static void CommandDma(void)\r
{\r
struct PicoVideo *pvid=&Pico.video;\r
int len=0,method=0;\r
if (method==3) DmaCopy(len); // VRAM Copy\r
}\r
\r
-static void CommandChange()\r
+static void CommandChange(void)\r
{\r
struct PicoVideo *pvid=&Pico.video;\r
unsigned int cmd=0,addr=0;\r
addr =(cmd>>16)&0x3fff;\r
addr|=(cmd<<14)&0xc000;\r
pvid->addr=(unsigned short)addr;\r
- //dprintf("addr set: %04x", addr);\r
\r
// Check for dma:\r
if (cmd&0x80) CommandDma();\r
}\r
\r
-void PicoVideoWrite(unsigned int a,unsigned short d)\r
+PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)\r
{\r
struct PicoVideo *pvid=&Pico.video;\r
\r
\r
if (a==0x00) // Data port 0 or 2\r
{\r
- if (pvid->pending) CommandChange();\r
- pvid->pending=0;\r
+ if (pvid->pending) {\r
+ CommandChange();\r
+ pvid->pending=0;\r
+ }\r
\r
// If a DMA fill has been set up, do it\r
if ((pvid->command&0x80) && (pvid->reg[1]&0x10) && (pvid->reg[0x17]>>6)==2)\r
}\r
else\r
{\r
+ // preliminary FIFO emulation for Chaos Engine, The (E)\r
+ if(!(pvid->status&8) && (pvid->reg[1]&0x40) && Pico.m.scanline!=-1 && !(PicoOpt&0x10000)) // active display, accurate mode?\r
+ {\r
+ pvid->status&=~0x200; // FIFO no longer empty\r
+ pvid->lwrite_cnt++;\r
+ if (pvid->lwrite_cnt >= 4) pvid->status|=0x100; // FIFO full\r
+ if (pvid->lwrite_cnt > 4) {\r
+ SekCyclesBurn(32); // penalty // 488/12-8\r
+ if (SekCycleCnt>=SekCycleAim) SekEndRun(0);\r
+ }\r
+ elprintf(EL_ASVDP, "VDP data write: %04x {%i} #%i @ %06x", d, Pico.video.type, pvid->lwrite_cnt, SekPc);\r
+ }\r
VideoWrite(d);\r
}\r
return;\r
\r
if (a==0x04) // Control (command) port 4 or 6\r
{\r
- //dprintf("vdp cw(%04x), p=%i @ %06x [%i]", d, pvid->pending, SekPc, SekCyclesDone());\r
if(pvid->pending)\r
{\r
// Low word of command:\r
{\r
// Register write:\r
int num=(d>>8)&0x1f;\r
- //if(num==00) dprintf("hint_onoff: %i->%i [%i|%i] pend=%i @ %06x", (pvid->reg[0]&0x10)>>4, (d&0x10)>>4, Pico.m.scanline, SekCyclesDone(), (pvid->pending_ints&0x10)>>4, SekPc);\r
- //if(num==01) dprintf("vint_onoff: %i->%i [%i|%i] pend=%i @ %06x", (pvid->reg[1]&0x20)>>5, (d&0x20)>>5, Pico.m.scanline, SekCyclesDone(), (pvid->pending_ints&0x20)>>5, SekPc);\r
+ if(num==00) elprintf(EL_INTSW, "hint_onoff: %i->%i [%i] pend=%i @ %06x", (pvid->reg[0]&0x10)>>4,\r
+ (d&0x10)>>4, SekCyclesDone(), (pvid->pending_ints&0x10)>>4, SekPc);\r
+ if(num==01) elprintf(EL_INTSW, "vint_onoff: %i->%i [%i] pend=%i @ %06x", (pvid->reg[1]&0x20)>>5,\r
+ (d&0x20)>>5, SekCyclesDone(), (pvid->pending_ints&0x20)>>5, SekPc);\r
//if(num==01) dprintf("set_blank: %i @ %06x [%i|%i]", !((d&0x40)>>6), SekPc, Pico.m.scanline, SekCyclesDone());\r
- //if(num==05) dprintf("spr_set: %i @ %06x [%i|%i]", (unsigned char)d, SekPc, Pico.m.scanline, SekCyclesDone());\r
//if(num==10) dprintf("hint_set: %i @ %06x [%i|%i]", (unsigned char)d, SekPc, Pico.m.scanline, SekCyclesDone());\r
pvid->reg[num]=(unsigned char)d;\r
#if !(defined(EMU_C68K) && defined(EMU_M68K)) // not debugging Cyclone\r
// update IRQ level (Lemmings, Wiz 'n' Liz intro, ... )\r
// may break if done improperly:\r
- // International Superstar Soccer Deluxe (crash), Street Racer (logos), Burning Force (gfx), Fatal Rewind (hang), Sesame Street Counting Cafe\r
+ // International Superstar Soccer Deluxe (crash), Street Racer (logos), Burning Force (gfx),\r
+ // Fatal Rewind (hang), Sesame Street Counting Cafe\r
if(num < 2) {\r
#ifdef EMU_C68K\r
// hack: make sure we do not touch the irq line if Cyclone is just about to take the IRQ\r
}\r
}\r
\r
-unsigned int PicoVideoRead(unsigned int a)\r
+PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a)\r
{\r
unsigned int d=0;\r
\r
a&=0x1c;\r
\r
+\r
if (a==0x00) // data port\r
{\r
d=VideoRead();\r
\r
if (a==0x04) // control port\r
{\r
- d=Pico.video.status;\r
- if(PicoOpt&0x10) d|=0x0020; // sprite collision (Shadow of the Beast)\r
- if(Pico.m.rotate++&8) d|=0x0100; else d|=0x0200; // Toggle fifo full empty (who uses that stuff?)\r
- if(!(Pico.video.reg[1]&0x40)) d|=0x0008; // set V-Blank if display is disabled\r
- if(SekCyclesLeft < 84+4) d|=0x0004; // H-Blank (Sonic3 vs)\r
- dprintf("sr_read %04x @ %06x [%i|%i]", d, SekPc, Pico.m.scanline, SekCyclesDone());\r
+ struct PicoVideo *pv=&Pico.video;\r
+ d=pv->status;\r
+ if (PicoOpt&0x10) d|=0x0020; // sprite collision (Shadow of the Beast)\r
+ if (!(pv->reg[1]&0x40)) d|=0x0008; // set V-Blank if display is disabled\r
+ if (SekCyclesLeft < 84+4) d|=0x0004; // H-Blank (Sonic3 vs)\r
+\r
+ d|=(pv->pending_ints&0x20)<<2; // V-int pending?\r
+ if (d&0x100) pv->status&=~0x100; // FIFO no longer full\r
\r
- Pico.video.pending=0; // ctrl port reads clear write-pending flag (Charles MacDonald)\r
+ pv->pending=0; // ctrl port reads clear write-pending flag (Charles MacDonald)\r
\r
+ elprintf(EL_SR, "SR read: %04x @ %06x", d, SekPc);\r
goto end;\r
}\r
\r
hc=hcounts_40[lineCycles];\r
else hc=hcounts_32[lineCycles];\r
\r
- if(lineCycles > 488-12) d++; // Wheel of Fortune\r
+ //if(lineCycles > 488-12) d++; // Wheel of Fortune\r
} else {\r
// get approximate V-Counter\r
d=vcounts[SekCyclesDone()>>8];\r
if (d&0xf00) d|= 1;\r
}\r
\r
- dprintf("hv: %02x %02x (%i) @ %06x", hc, d, SekCyclesDone(), SekPc);\r
+ elprintf(EL_HVCNT, "hv: %02x %02x (%i) @ %06x", hc, d, SekCyclesDone(), SekPc);\r
d&=0xff; d<<=8;\r
d|=hc;\r
goto end;\r
notaz.gp2x.de / picodrive.git / blobdiff