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fast mode timing changed (again...)

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@271 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-10-06 16:06:15 +00:00
parent c77ca79e89
commit 9a8ffeeeea
4 changed files with 29 additions and 19 deletions
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36
Pico/Pico.c
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@ -423,24 +423,34 @@ static int PicoFrameHints(void)
#include "PicoFrameHints.c"
#endif
// helper z80 runner
// helper z80 runner. Runs only if z80 is enabled at this point
// (z80WriteBusReq will handle the rest)
static void PicoRunZ80Simple(int line_from, int line_to)
{
int line_from_r=line_from, line_to_r=line_to, line = line_from;
int line_from_r=line_from, line_to_r=line_to, line=0;
int line_sample = Pico.m.pal ? 68 : 93;
if(!(PicoOpt&4) || Pico.m.z80Run == 0) { line_from_r = line_to_r; line_to_r = 0; }
if (!(PicoOpt&4) || Pico.m.z80Run == 0) line_to_r = 0;
else {
extern const unsigned short vcounts[];
if (z80startCycle) {
line = vcounts[z80startCycle>>8];
if (line > line_from)
line_from_r = line;
}
z80startCycle = SekCyclesDone();
}
if(PicoOpt&1) {
if (PicoOpt&1) {
// we have ym2612 enabled, so we have to run Z80 in lines, so we could update DAC and timers
for(; line < line_to; line++) {
for (line = line_from; line < line_to; line++) {
sound_timers_and_dac(line);
if((line == 224 || line == line_sample) && PsndOut) getSamples(line);
if(line == 32 && PsndOut) emustatus &= ~1;
if(line >= line_from_r && line < line_to_r)
if ((line == 224 || line == line_sample) && PsndOut) getSamples(line);
if (line == 32 && PsndOut) emustatus &= ~1;
if (line >= line_from_r && line < line_to_r)
z80_run(228);
}
} else if(line_to_r-line_from_r > 0) {
} else if (line_to_r-line_from_r > 0) {
z80_run(228*(line_to_r-line_from_r));
// samples will be taken by caller
}
@ -482,6 +492,7 @@ static int PicoFrameSimple(void)
Pico.video.status|=0x200;
Pico.m.scanline=-1;
z80startCycle=0;
SekCyclesReset();
@ -507,11 +518,12 @@ static int PicoFrameSimple(void)
if(sects) {
int c = sects*cycles_68k_block;
lines += sects*lines_step;
PicoRunZ80Simple(line, lines);
// this is for approriate line counter, etc
// this "run" is for approriate line counter, etc
SekCycleCnt += c;
SekCycleAim += c;
lines += sects*lines_step;
PicoRunZ80Simple(line, lines);
}
// here we render sound if ym2612 is disabled