static int PicoFrameHints(void)
{
struct PicoVideo *pv=&Pico.video;
- int lines, y, lines_vis = 224, line_sample, skip;
+ int lines, y, lines_vis = 224, line_sample, skip, vcnt_wrap;
int hint; // Hint counter
- Pico.m.scanline = 0;
+ pv->v_counter = Pico.m.scanline = 0;
if ((PicoOpt&POPT_ALT_RENDERER) && !PicoSkipFrame && (pv->reg[1]&0x40)) { // fast rend., display enabled
// draw a frame just after vblank in alternative render mode
if (Pico.m.pal) {
line_sample = 68;
- if(pv->reg[1]&8) lines_vis = 240;
+ if (pv->reg[1]&8) lines_vis = 240;
} else {
line_sample = 93;
}
for (y = 0; y < lines_vis; y++)
{
- Pico.m.scanline = y;
+ pv->v_counter = Pico.m.scanline = y;
+ if ((pv->reg[12]&6) == 6) { // interlace mode 2
+ pv->v_counter <<= 1;
+ pv->v_counter |= pv->v_counter >> 8;
+ pv->v_counter &= 0xff;
+ }
// VDP FIFO
pv->lwrite_cnt -= 12;
emustatus &= ~1;
else if ((y == 224 || y == line_sample) && PsndOut)
{
- if (Pico.m.z80Run && (PicoOpt&POPT_EN_Z80))
+ if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
PicoSyncZ80(SekCycleCnt);
if (ym2612.dacen && PsndDacLine <= y)
PsndDoDAC(y);
#ifdef PICO_CD
update_chips();
#else
- if (PicoLineHook) PicoLineHook(1);
+ if (PicoLineHook) PicoLineHook();
#endif
}
// V-int line (224 or 240)
Pico.m.scanline = y;
+ pv->v_counter = 0xe0; // bad for 240 mode
+ if ((pv->reg[12]&6) == 6) pv->v_counter = 0xc1;
// VDP FIFO
pv->lwrite_cnt=0;
Pico.video.status|=0x200;
+ memcpy(PicoPadInt, PicoPad, sizeof(PicoPadInt));
PAD_DELAY
#ifdef PICO_CD
check_cd_dma();
if (pv->reg[0]&0x10) SekInterrupt(4);
}
- // V-Interrupt:
pv->status|=0x08; // go into vblank
pv->pending_ints|=0x20;
elprintf(EL_INTS, "vint: @ %06x [%i]", SekPc, SekCycleCnt);
SekInterrupt(6);
}
- if (Pico.m.z80Run && (PicoOpt&POPT_EN_Z80)) {
+ if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80)) {
PicoSyncZ80(SekCycleCnt);
elprintf(EL_INTS, "zint");
z80_int();
#ifdef PICO_CD
update_chips();
#else
- if (PicoLineHook) PicoLineHook(1);
+ if (PicoLineHook) PicoLineHook();
#endif
// PAL line count might actually be 313 according to Steve Snake, but that would complicate things.
lines = Pico.m.pal ? 312 : 262;
+ vcnt_wrap = Pico.m.pal ? 0x103 : 0xEB; // based on Gens
for (y++; y < lines; y++)
{
- Pico.m.scanline = y;
+ pv->v_counter = Pico.m.scanline = y;
+ if (y >= vcnt_wrap)
+ pv->v_counter -= Pico.m.pal ? 56 : 6;
+ if ((pv->reg[12]&6) == 6)
+ pv->v_counter = (pv->v_counter << 1) | 1;
+ pv->v_counter &= 0xff;
PAD_DELAY
#ifdef PICO_CD
#ifdef PICO_CD
update_chips();
#else
- if (PicoLineHook) PicoLineHook(1);
+ if (PicoLineHook) PicoLineHook();
#endif
}
// sync z80
- if (Pico.m.z80Run && (PicoOpt&POPT_EN_Z80))
+ if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
PicoSyncZ80(Pico.m.pal ? 151809 : 127671); // cycles adjusted for converter
if (PsndOut && ym2612.dacen && PsndDacLine <= lines-1)
PsndDoDAC(lines-1);