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lowercasing filenames, part3
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@576 be3aeb3a-fb24-0410-a615-afba39da0efa
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262
pico/pico_cmn.c
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262
pico/pico_cmn.c
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// common code for Pico.c and cd/Pico.c
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// (c) Copyright 2007,2008 Grazvydas "notaz" Ignotas
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#define CYCLES_M68K_LINE 488 // suitable for both PAL/NTSC
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#define CYCLES_M68K_VINT_LAG 68
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#define CYCLES_M68K_ASD 148
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#define CYCLES_S68K_LINE 795
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#define CYCLES_S68K_ASD 241
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// pad delay (for 6 button pads)
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#define PAD_DELAY \
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if (PicoOpt&POPT_6BTN_PAD) { \
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if(Pico.m.padDelay[0]++ > 25) Pico.m.padTHPhase[0]=0; \
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if(Pico.m.padDelay[1]++ > 25) Pico.m.padTHPhase[1]=0; \
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}
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// CPUS_RUN
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#ifndef PICO_CD
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#define CPUS_RUN(m68k_cycles,s68k_cycles) \
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SekRunM68k(m68k_cycles);
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#else
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#define CPUS_RUN(m68k_cycles,s68k_cycles) \
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{ \
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if ((PicoOpt&POPT_EN_MCD_PSYNC) && (Pico_mcd->m.busreq&3) == 1) { \
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SekRunPS(m68k_cycles, s68k_cycles); /* "better/perfect sync" */ \
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} else { \
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SekRunM68k(m68k_cycles); \
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if ((Pico_mcd->m.busreq&3) == 1) /* no busreq/no reset */ \
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SekRunS68k(s68k_cycles); \
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} \
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}
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#endif
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// Accurate but slower frame which does hints
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static int PicoFrameHints(void)
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{
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struct PicoVideo *pv=&Pico.video;
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int lines, y, lines_vis = 224, line_sample, skip, vcnt_wrap;
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int hint; // Hint counter
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pv->v_counter = Pico.m.scanline = 0;
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if ((PicoOpt&POPT_ALT_RENDERER) && !PicoSkipFrame && (pv->reg[1]&0x40)) { // fast rend., display enabled
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// draw a frame just after vblank in alternative render mode
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// yes, this will cause 1 frame lag, but this is inaccurate mode anyway.
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PicoFrameFull();
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#ifdef DRAW_FINISH_FUNC
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DRAW_FINISH_FUNC();
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#endif
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skip = 1;
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}
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else skip=PicoSkipFrame;
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if (Pico.m.pal) {
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line_sample = 68;
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if (pv->reg[1]&8) lines_vis = 240;
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} else {
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line_sample = 93;
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}
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SekCyclesReset();
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z80_resetCycles();
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#ifdef PICO_CD
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SekCyclesResetS68k();
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#endif
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PsndDacLine = 0;
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pv->status&=~0x88; // clear V-Int, come out of vblank
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hint=pv->reg[10]; // Load H-Int counter
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//dprintf("-hint: %i", hint);
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// This is to make active scan longer (needed for Double Dragon 2, mainly)
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CPUS_RUN(CYCLES_M68K_ASD, CYCLES_S68K_ASD);
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for (y = 0; y < lines_vis; y++)
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{
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pv->v_counter = Pico.m.scanline = y;
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if ((pv->reg[12]&6) == 6) { // interlace mode 2
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pv->v_counter <<= 1;
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pv->v_counter |= pv->v_counter >> 8;
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pv->v_counter &= 0xff;
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}
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// VDP FIFO
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pv->lwrite_cnt -= 12;
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if (pv->lwrite_cnt <= 0) {
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pv->lwrite_cnt=0;
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Pico.video.status|=0x200;
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}
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PAD_DELAY
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#ifdef PICO_CD
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check_cd_dma();
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#endif
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// H-Interrupts:
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if (--hint < 0) // y <= lines_vis: Comix Zone, Golden Axe
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{
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hint=pv->reg[10]; // Reload H-Int counter
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pv->pending_ints|=0x10;
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if (pv->reg[0]&0x10) {
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elprintf(EL_INTS, "hint: @ %06x [%i]", SekPc, SekCycleCnt);
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SekInterrupt(4);
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}
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}
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// decide if we draw this line
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if (!skip && (PicoOpt & POPT_ALT_RENDERER))
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{
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// find the right moment for frame renderer, when display is no longer blanked
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if ((pv->reg[1]&0x40) || y > 100) {
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PicoFrameFull();
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#ifdef DRAW_FINISH_FUNC
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DRAW_FINISH_FUNC();
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#endif
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skip = 1;
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}
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}
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#ifndef PICO_CD
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// get samples from sound chips
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if (y == 32 && PsndOut)
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emustatus &= ~1;
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else if ((y == 224 || y == line_sample) && PsndOut)
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{
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if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
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PicoSyncZ80(SekCycleCnt);
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if (ym2612.dacen && PsndDacLine <= y)
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PsndDoDAC(y);
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getSamples(y);
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}
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#endif
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// Run scanline:
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if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
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CPUS_RUN(CYCLES_M68K_LINE, CYCLES_S68K_LINE);
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#ifdef PICO_CD
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update_chips();
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#else
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if (PicoLineHook) PicoLineHook();
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#endif
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}
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if (!skip)
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{
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if (DrawScanline < y)
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PicoDrawSync(y - 1, 0);
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#ifdef DRAW_FINISH_FUNC
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DRAW_FINISH_FUNC();
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#endif
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}
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// V-int line (224 or 240)
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Pico.m.scanline = y;
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pv->v_counter = 0xe0; // bad for 240 mode
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if ((pv->reg[12]&6) == 6) pv->v_counter = 0xc1;
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// VDP FIFO
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pv->lwrite_cnt=0;
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Pico.video.status|=0x200;
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memcpy(PicoPadInt, PicoPad, sizeof(PicoPadInt));
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PAD_DELAY
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#ifdef PICO_CD
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check_cd_dma();
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#endif
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// Last H-Int:
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if (--hint < 0)
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{
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hint=pv->reg[10]; // Reload H-Int counter
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pv->pending_ints|=0x10;
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//printf("rhint: %i @ %06x [%i|%i]\n", hint, SekPc, y, SekCycleCnt);
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if (pv->reg[0]&0x10) SekInterrupt(4);
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}
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pv->status|=0x08; // go into vblank
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pv->pending_ints|=0x20;
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// the following SekRun is there for several reasons:
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// there must be a delay after vblank bit is set and irq is asserted (Mazin Saga)
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// also delay between F bit (bit 7) is set in SR and IRQ happens (Ex-Mutants)
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// also delay between last H-int and V-int (Golden Axe 3)
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SekRunM68k(CYCLES_M68K_VINT_LAG);
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if (pv->reg[1]&0x20) {
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elprintf(EL_INTS, "vint: @ %06x [%i]", SekPc, SekCycleCnt);
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SekInterrupt(6);
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}
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if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80)) {
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PicoSyncZ80(SekCycleCnt);
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elprintf(EL_INTS, "zint");
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z80_int();
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}
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// get samples from sound chips
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#ifndef PICO_CD
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if (y == 224)
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#endif
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if (PsndOut)
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{
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if (ym2612.dacen && PsndDacLine <= y)
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PsndDoDAC(y);
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getSamples(y);
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}
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// Run scanline:
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if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
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CPUS_RUN(CYCLES_M68K_LINE - CYCLES_M68K_VINT_LAG - CYCLES_M68K_ASD,
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CYCLES_S68K_LINE - CYCLES_S68K_ASD);
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#ifdef PICO_CD
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update_chips();
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#else
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if (PicoLineHook) PicoLineHook();
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#endif
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// PAL line count might actually be 313 according to Steve Snake, but that would complicate things.
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lines = Pico.m.pal ? 312 : 262;
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vcnt_wrap = Pico.m.pal ? 0x103 : 0xEB; // based on Gens
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for (y++; y < lines; y++)
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{
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pv->v_counter = Pico.m.scanline = y;
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if (y >= vcnt_wrap)
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pv->v_counter -= Pico.m.pal ? 56 : 6;
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if ((pv->reg[12]&6) == 6)
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pv->v_counter = (pv->v_counter << 1) | 1;
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pv->v_counter &= 0xff;
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PAD_DELAY
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#ifdef PICO_CD
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check_cd_dma();
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#endif
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// Run scanline:
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if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
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CPUS_RUN(CYCLES_M68K_LINE, CYCLES_S68K_LINE);
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#ifdef PICO_CD
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update_chips();
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#else
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if (PicoLineHook) PicoLineHook();
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#endif
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}
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// sync z80
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if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
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PicoSyncZ80(Pico.m.pal ? 151809 : 127671); // cycles adjusted for converter
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if (PsndOut && ym2612.dacen && PsndDacLine <= lines-1)
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PsndDoDAC(lines-1);
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timers_cycle();
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return 0;
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}
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#undef PAD_DELAY
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#undef CPUS_RUN
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