\r
struct PicoSRAM SRam;\r
int emustatus; // rapid_ym2612, multi_ym_updates\r
-int scanlines_total;\r
\r
void (*PicoWriteSound)(int len) = NULL; // called at the best time to send sound buffer (PsndOut) to hardware\r
void (*PicoResetHook)(void) = NULL;\r
memset(&PicoPad,0,sizeof(PicoPad));\r
memset(&PicoPadInt,0,sizeof(PicoPadInt));\r
\r
+ Pico.est.Pico_video = &Pico.video;\r
+ Pico.est.Pico_vram = Pico.vram;\r
+ Pico.est.PicoOpt = &PicoOpt;\r
+\r
// Init CPUs:\r
SekInit();\r
z80_init(); // init even if we aren't going to use it\r
PicoInitMCD();\r
PicoSVPInit();\r
Pico32xInit();\r
+\r
+ PicoDrawInit();\r
+ PicoDraw2Init();\r
}\r
\r
// to be called once on emu exit\r
void PicoPower(void)\r
{\r
Pico.m.frame_count = 0;\r
+ SekCycleCnt = SekCycleAim = 0;\r
\r
// clear all memory of the emulated machine\r
memset(&Pico.ram,0,(unsigned char *)&Pico.rom - Pico.ram);\r
}\r
\r
SekReset();\r
+ // ..but do not reset SekCycle* to not desync with addons\r
+\r
// s68k doesn't have the TAS quirk, so we just globally set normal TAS handler in MCD mode (used by Batman games).\r
SekSetRealTAS(PicoAHW & PAHW_MCD);\r
- SekCycleCntT = SekCycleCnt = SekCycleAim = 0;\r
-\r
- if (PicoAHW & PAHW_MCD)\r
- // needed for MCD to reset properly, probably some bug hides behind this..\r
- memset(Pico.ioports,0,sizeof(Pico.ioports));\r
\r
Pico.m.dirtyPal = 1;\r
\r
Pico.m.z80_bank68k = 0;\r
Pico.m.z80_reset = 1;\r
- memset(Pico.zram, 0, sizeof(Pico.zram)); // ??\r
\r
PicoDetectRegion();\r
Pico.video.status = 0x3428 | Pico.m.pal; // 'always set' bits | vblank | collision | pal\r
// force setting possibly changed..\r
Pico.m.pal = (PicoRegionOverride == 2 || PicoRegionOverride == 8) ? 1 : 0;\r
\r
- // FIXME: PAL has 313 scanlines..\r
- scanlines_total = Pico.m.pal ? 312 : 262;\r
-\r
Pico.m.dirtyPal = 1;\r
rendstatus_old = -1;\r
}\r
\r
-\r
-// dma2vram settings are just hacks to unglitch Legend of Galahad (needs <= 104 to work)\r
-// same for Outrunners (92-121, when active is set to 24)\r
-// 96 is VR hack\r
+// this table is wrong and should be removed\r
+// keeping it for now to compensate wrong timing elswhere, mainly for Outrunners\r
static const int dma_timings[] = {\r
- 96, 167, 166, 83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy\r
- 102, 205, 204, 102, // vblank: 40cell:\r
- 16, 16, 15, 8, // active: 32cell:\r
- 24, 18, 17, 9 // ...\r
+ 83, 166, 83, 83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy\r
+ 102, 204, 102, 102, // vblank: 40cell:\r
+ 8, 16, 8, 8, // active: 32cell:\r
+ 17, 18, 9, 9 // ...\r
};\r
\r
static const int dma_bsycles[] = {\r
- (488<<8)/96, (488<<8)/167, (488<<8)/166, (488<<8)/83,\r
- (488<<8)/102, (488<<8)/205, (488<<8)/204, (488<<8)/102,\r
- (488<<8)/16, (488<<8)/16, (488<<8)/15, (488<<8)/8,\r
- (488<<8)/24, (488<<8)/18, (488<<8)/17, (488<<8)/9\r
+ (488<<8)/83, (488<<8)/166, (488<<8)/83, (488<<8)/83,\r
+ (488<<8)/102, (488<<8)/204, (488<<8)/102, (488<<8)/102,\r
+ (488<<8)/8, (488<<8)/16, (488<<8)/8, (488<<8)/8,\r
+ (488<<8)/9, (488<<8)/18, (488<<8)/9, (488<<8)/9\r
};\r
\r
+// grossly inaccurate.. FIXME FIXXXMEE\r
PICO_INTERNAL int CheckDMA(void)\r
{\r
int burn = 0, xfers_can, dma_op = Pico.video.reg[0x17]>>6; // see gens for 00 and 01 modes\r
Pico.m.dma_xfers -= xfers_can;\r
}\r
\r
- elprintf(EL_VDPDMA, "~Dma %i op=%i can=%i burn=%i [%i]", Pico.m.dma_xfers, dma_op1, xfers_can, burn, SekCyclesDone());\r
+ elprintf(EL_VDPDMA, "~Dma %i op=%i can=%i burn=%i [%u]",\r
+ Pico.m.dma_xfers, dma_op1, xfers_can, burn, SekCyclesDone());\r
//dprintf("~aim: %i, cnt: %i", SekCycleAim, SekCycleCnt);\r
return burn;\r
}\r
\r
#include "pico_cmn.c"\r
\r
-int z80stopCycle;\r
-int z80_cycle_cnt; /* 'done' z80 cycles before z80_run() */\r
+unsigned int last_z80_sync; /* in 68k cycles */\r
+int z80_cycle_cnt;\r
int z80_cycle_aim;\r
int z80_scanline;\r
int z80_scanline_cycles; /* cycles done until z80_scanline */\r
\r
/* sync z80 to 68k */\r
-PICO_INTERNAL void PicoSyncZ80(int m68k_cycles_done)\r
+PICO_INTERNAL void PicoSyncZ80(unsigned int m68k_cycles_done)\r
{\r
+ int m68k_cnt;\r
int cnt;\r
- z80_cycle_aim = cycles_68k_to_z80(m68k_cycles_done);\r
+\r
+ m68k_cnt = m68k_cycles_done - last_z80_sync;\r
+ z80_cycle_aim += cycles_68k_to_z80(m68k_cnt);\r
cnt = z80_cycle_aim - z80_cycle_cnt;\r
+ last_z80_sync = m68k_cycles_done;\r
\r
pprof_start(z80);\r
\r
- elprintf(EL_BUSREQ, "z80 sync %i (%i|%i -> %i|%i)", cnt, z80_cycle_cnt, z80_cycle_cnt / 228,\r
+ elprintf(EL_BUSREQ, "z80 sync %i (%u|%u -> %u|%u)", cnt,\r
+ z80_cycle_cnt, z80_cycle_cnt / 228,\r
z80_cycle_aim, z80_cycle_aim / 228);\r
\r
if (cnt > 0)\r
goto end;\r
}\r
\r
- // TODO: MCD+32X\r
- if (PicoAHW & PAHW_MCD) {\r
- PicoFrameMCD();\r
+ if (PicoAHW & PAHW_32X) {\r
+ PicoFrame32x(); // also does MCD+32X\r
goto end;\r
}\r
\r
- if (PicoAHW & PAHW_32X) {\r
- PicoFrame32x();\r
+ if (PicoAHW & PAHW_MCD) {\r
+ PicoFrameMCD();\r
goto end;\r
}\r
\r
notaz.gp2x.de / picodrive.git / blobdiff