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some more risky timing changes

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But should be closer to the real thing.
Let's see what this will break...
This commit is contained in:
notaz 2017-10-02 23:38:12 +03:00
parent 8f80007bcc
commit e42a47e208
10 changed files with 129 additions and 81 deletions
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30
pico/pico.c
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@ -22,7 +22,6 @@ int PicoAutoRgnOrder;
struct PicoSRAM SRam;
int emustatus; // rapid_ym2612, multi_ym_updates
int scanlines_total;
void (*PicoWriteSound)(int len) = NULL; // called at the best time to send sound buffer (PsndOut) to hardware
void (*PicoResetHook)(void) = NULL;
@ -227,29 +226,24 @@ void PicoLoopPrepare(void)
// force setting possibly changed..
Pico.m.pal = (PicoRegionOverride == 2 || PicoRegionOverride == 8) ? 1 : 0;
// FIXME: PAL has 313 scanlines..
scanlines_total = Pico.m.pal ? 312 : 262;
Pico.m.dirtyPal = 1;
rendstatus_old = -1;
}
// dma2vram settings are just hacks to unglitch Legend of Galahad (needs <= 104 to work)
// same for Outrunners (92-121, when active is set to 24)
// 96 is VR hack
// this table is wrong and should be removed
// keeping it for now to compensate wrong timing elswhere, mainly for Outrunners
static const int dma_timings[] = {
167, 167, 166, 83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy
102, 205, 204, 102, // vblank: 40cell:
16, 16, 15, 8, // active: 32cell:
24, 18, 17, 9 // ...
83, 166, 83, 83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy
102, 204, 102, 102, // vblank: 40cell:
8, 16, 8, 8, // active: 32cell:
17, 18, 9, 9 // ...
};
static const int dma_bsycles[] = {
(488<<8)/167, (488<<8)/167, (488<<8)/166, (488<<8)/83,
(488<<8)/102, (488<<8)/233, (488<<8)/204, (488<<8)/102,
(488<<8)/16, (488<<8)/16, (488<<8)/15, (488<<8)/8,
(488<<8)/24, (488<<8)/18, (488<<8)/17, (488<<8)/9
(488<<8)/83, (488<<8)/166, (488<<8)/83, (488<<8)/83,
(488<<8)/102, (488<<8)/204, (488<<8)/102, (488<<8)/102,
(488<<8)/8, (488<<8)/16, (488<<8)/8, (488<<8)/8,
(488<<8)/9, (488<<8)/18, (488<<8)/9, (488<<8)/9
};
// grossly inaccurate.. FIXME FIXXXMEE
@ -304,8 +298,8 @@ PICO_INTERNAL void PicoSyncZ80(unsigned int m68k_cycles_done)
pprof_start(z80);
elprintf(EL_BUSREQ, "z80 sync %i (%u|%u -> %u|%u)", cnt,
z80_cycle_cnt, z80_cycle_cnt / 288,
z80_cycle_aim, z80_cycle_aim / 288);
z80_cycle_cnt, z80_cycle_cnt / 228,
z80_cycle_aim, z80_cycle_aim / 228);
if (cnt > 0)
z80_cycle_cnt += z80_run(cnt);