X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2FVideoPort.c;h=55514ed82f8580f8037055e3c03b982232e042b9;hb=602133e1c66666f9152b1edb3014e137a9768cad;hp=cceab7c7cb6e6a79e92ddad5b2d13b320a7aba4d;hpb=95dc5c5e5e053ae616754c1205e480822a730ed2;p=picodrive.git diff --git a/Pico/VideoPort.c b/Pico/VideoPort.c index cceab7c..55514ed 100644 --- a/Pico/VideoPort.c +++ b/Pico/VideoPort.c @@ -13,7 +13,6 @@ extern const unsigned char hcounts_32[]; extern const unsigned char hcounts_40[]; extern const unsigned short vcounts[]; -extern int rendstatus; #ifndef UTYPES_DEFINED typedef unsigned char u8; @@ -37,7 +36,7 @@ static void VideoWrite(u16 d) { case 1: if(a&1) d=(u16)((d<<8)|(d>>8)); // If address is odd, bytes are swapped (which game needs this?) Pico.vram [(a>>1)&0x7fff]=d; - rendstatus|=0x10; break; + rendstatus |= PDRAW_DIRTY_SPRITES; break; case 3: Pico.m.dirtyPal = 1; Pico.cram [(a>>1)&0x003f]=d; break; // wraps (Desert Strike) case 5: Pico.vsram[(a>>1)&0x003f]=d; break; @@ -93,9 +92,9 @@ static void DmaSlow(int len) Pico.video.type, source, a, len, inc, (Pico.video.status&8)||!(Pico.video.reg[1]&0x40), SekCyclesDone(), SekPc); - if(Pico.m.scanline != -1) { + if (Pico.m.scanline != -1) { Pico.m.dma_xfers += len; - if ((PicoMCD&1) && (PicoOpt & 0x2000)) SekCyclesBurn(CheckDMA()); + if ((PicoAHW & PAHW_MCD) && (PicoOpt & POPT_EN_MCD_PSYNC)) SekCyclesBurn(CheckDMA()); else SekSetCyclesLeftNoMCD(SekCyclesLeftNoMCD - CheckDMA()); } else { // be approximate in non-accurate mode @@ -105,7 +104,9 @@ static void DmaSlow(int len) if ((source&0xe00000)==0xe00000) { // Ram pd=(u16 *)(Pico.ram+(source&0xfffe)); pdend=(u16 *)(Pico.ram+0x10000); - } else if (PicoMCD & 1) { + } + else if (PicoAHW & PAHW_MCD) + { elprintf(EL_VDPDMA, "DmaSlow CD, r3=%02x", Pico_mcd->s68k_regs[3]); if(source<0x20000) { // Bios area pd=(u16 *)(Pico_mcd->bios+(source&~1)); @@ -133,7 +134,9 @@ static void DmaSlow(int len) elprintf(EL_VDPDMA|EL_ANOMALY, "DmaSlow[%i] %06x->%04x: FIXME: unsupported src", Pico.video.type, source, a); return; } - } else { + } + else + { // if we have DmaHook, let it handle ROM because of possible DMA delay if (PicoDmaHook && PicoDmaHook(source, len, &pd, &pdend)); else if (source= pdend) pd-=0x8000; // should be good for RAM, bad for ROM } } - rendstatus|=0x10; + rendstatus |= PDRAW_DIRTY_SPRITES; break; case 3: // cram @@ -244,7 +247,7 @@ static void DmaCopy(int len) } // remember addr Pico.video.addr=a; - rendstatus|=0x10; + rendstatus |= PDRAW_DIRTY_SPRITES; } // check: Contra, Megaman @@ -284,7 +287,7 @@ static void DmaFill(int data) // update length Pico.video.reg[0x13] = Pico.video.reg[0x14] = 0; // Dino Dini's Soccer (E) (by Haze) - rendstatus|=0x10; + rendstatus |= PDRAW_DIRTY_SPRITES; } static void CommandDma(void) @@ -341,7 +344,7 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d) else { // preliminary FIFO emulation for Chaos Engine, The (E) - if(!(pvid->status&8) && (pvid->reg[1]&0x40) && Pico.m.scanline!=-1 && !(PicoOpt&0x10000)) // active display, accurate mode? + if(!(pvid->status&8) && (pvid->reg[1]&0x40) && Pico.m.scanline!=-1 && !(PicoOpt&POPT_DIS_VDP_FIFO)) // active display, accurate mode? { pvid->status&=~0x200; // FIFO no longer empty pvid->lwrite_cnt++; @@ -366,45 +369,63 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d) pvid->command|=d; pvid->pending=0; CommandChange(); - } else { - if((d&0xc000)==0x8000) + } + else + { + if ((d&0xc000)==0x8000) { // Register write: int num=(d>>8)&0x1f; int dold=pvid->reg[num]; + pvid->type=0; // register writes clear command (else no Sega logo in Golden Axe II) if (num > 0x0a && !(pvid->reg[1]&4)) { elprintf(EL_ANOMALY, "%02x written to reg %02x in SMS mode @ %06x", d, num, SekPc); + return; } else - pvid->reg[num]=(unsigned char)d; - if (num==00) elprintf(EL_INTSW, "hint_onoff: %i->%i [%i] pend=%i @ %06x", (dold&0x10)>>4, - (d&0x10)>>4, SekCyclesDone(), (pvid->pending_ints&0x10)>>4, SekPc); - if (num==01) elprintf(EL_INTSW, "vint_onoff: %i->%i [%i] pend=%i @ %06x", (dold&0x20)>>5, - (d&0x20)>>5, SekCyclesDone(), (pvid->pending_ints&0x20)>>5, SekPc); - if (num == 5 && (d^dold)) rendstatus|=1; - // renderers should update their palettes if sh/hi mode is changed - else if (num == 0xc && ((d^dold)&8)) Pico.m.dirtyPal = 2; + pvid->reg[num]=(unsigned char)d; + + switch (num) + { + case 0x00: + elprintf(EL_INTSW, "hint_onoff: %i->%i [%i] pend=%i @ %06x", (dold&0x10)>>4, + (d&0x10)>>4, SekCyclesDone(), (pvid->pending_ints&0x10)>>4, SekPc); + goto update_irq; + case 0x01: + elprintf(EL_INTSW, "vint_onoff: %i->%i [%i] pend=%i @ %06x", (dold&0x20)>>5, + (d&0x20)>>5, SekCyclesDone(), (pvid->pending_ints&0x20)>>5, SekPc); + if (!(d&0x40) && SekCyclesLeft > 420) { /*elprintf(EL_ANOMALY, "aa %i", SekCyclesLeft);*/ rendstatus |= PDRAW_EARLY_BLANK; } + goto update_irq; + case 0x05: + if (d^dold) rendstatus |= PDRAW_SPRITES_MOVED; + break; + case 0x0c: + // renderers should update their palettes if sh/hi mode is changed + if ((d^dold)&8) Pico.m.dirtyPal = 2; + break; + } + return; + +update_irq: #ifndef EMU_CORE_DEBUG // update IRQ level (Lemmings, Wiz 'n' Liz intro, ... ) // may break if done improperly: // International Superstar Soccer Deluxe (crash), Street Racer (logos), Burning Force (gfx), // Fatal Rewind (crash), Sesame Street Counting Cafe - else if (num < 2) + if (!SekShouldInterrupt) // hack { - if (!SekShouldInterrupt) // hack - { - int lines, pints, irq=0; - lines = (pvid->reg[1] & 0x20) | (pvid->reg[0] & 0x10); - pints = (pvid->pending_ints&lines); - if(pints & 0x20) irq = 6; - else if(pints & 0x10) irq = 4; - SekInterrupt(irq); // update line - - if (irq && Pico.m.scanline!=-1) SekEndRun(24); // make it delayed - } + int lines, pints, irq=0; + lines = (pvid->reg[1] & 0x20) | (pvid->reg[0] & 0x10); + pints = (pvid->pending_ints&lines); + if(pints & 0x20) irq = 6; + else if(pints & 0x10) irq = 4; + SekInterrupt(irq); // update line + + if (irq && Pico.m.scanline!=-1) SekEndRun(24); // make it delayed } #endif - pvid->type=0; // register writes clear command (else no Sega logo in Golden Axe II) - } else { + } + else + { // High word of command: pvid->command&=0x0000ffff; pvid->command|=d<<16; @@ -431,9 +452,9 @@ PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a) { struct PicoVideo *pv=&Pico.video; d=pv->status; - if (PicoOpt&0x10) d|=0x0020; // sprite collision (Shadow of the Beast) - if (!(pv->reg[1]&0x40)) d|=0x0008; // set V-Blank if display is disabled - if (SekCyclesLeft < 84+4) d|=0x0004; // H-Blank (Sonic3 vs) + if (PicoOpt&POPT_ALT_RENDERER) d|=0x0020; // sprite collision (Shadow of the Beast) + if (!(pv->reg[1]&0x40)) d|=0x0008; // set V-Blank if display is disabled + if (SekCyclesLeft < 84+4) d|=0x0004; // H-Blank (Sonic3 vs) d|=(pv->pending_ints&0x20)<<2; // V-int pending? if (d&0x100) pv->status&=~0x100; // FIFO no longer full