X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fpico.c;h=23f7efb2e124a9a0e1f661d632400220f3e9da84;hb=0c7d1ba332b26f4ac67199e8ecbb826651f8512a;hp=80ffb90efd04c7535659ac2e6d8274b787df17fc;hpb=19886062f1a36f70b1f01d58f3fa1b79162defac;p=picodrive.git

diff --git a/pico/pico.c b/pico/pico.c
index 80ffb90..23f7efb 100644
--- a/pico/pico.c
+++ b/pico/pico.c
@@ -16,6 +16,7 @@ int PicoSkipFrame;     // skip rendering frame?
 int PicoPad[2];        // Joypads, format is MXYZ SACB RLDU
 int PicoPadInt[2];     // internal copy
 int PicoAHW;           // active addon hardware: PAHW_*
+int PicoQuirks;        // game-specific quirks
 int PicoRegionOverride; // override the region detection 0: Auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
 int PicoAutoRgnOrder;
 
@@ -35,6 +36,10 @@ void PicoInit(void)
   memset(&PicoPad,0,sizeof(PicoPad));
   memset(&PicoPadInt,0,sizeof(PicoPadInt));
 
+  Pico.est.Pico_video = &Pico.video;
+  Pico.est.Pico_vram = Pico.vram;
+  Pico.est.PicoOpt = &PicoOpt;
+
   // Init CPUs:
   SekInit();
   z80_init(); // init even if we aren't going to use it
@@ -42,6 +47,9 @@ void PicoInit(void)
   PicoInitMCD();
   PicoSVPInit();
   Pico32xInit();
+
+  PicoDrawInit();
+  PicoDraw2Init();
 }
 
 // to be called once on emu exit
@@ -60,6 +68,7 @@ void PicoExit(void)
 void PicoPower(void)
 {
   Pico.m.frame_count = 0;
+  SekCycleCnt = SekCycleAim = 0;
 
   // clear all memory of the emulated machine
   memset(&Pico.ram,0,(unsigned char *)&Pico.rom - Pico.ram);
@@ -70,6 +79,9 @@ void PicoPower(void)
   Pico.video.pending_ints=0;
   z80_reset();
 
+  // my MD1 VA6 console has this in IO
+  Pico.ioports[1] = Pico.ioports[2] = Pico.ioports[3] = 0xff;
+
   // default VDP register values (based on Fusion)
   Pico.video.reg[0] = Pico.video.reg[1] = 0x04;
   Pico.video.reg[0xc] = 0x81;
@@ -146,7 +158,7 @@ int PicoReset(void)
   if (Pico.romsize <= 0)
     return 1;
 
-#ifdef DRC_CMP
+#if defined(CPU_CMP_R) || defined(CPU_CMP_W) || defined(DRC_CMP)
   PicoOpt |= POPT_DIS_VDP_FIFO|POPT_DIS_IDLE_DET;
 #endif
 
@@ -163,19 +175,15 @@ int PicoReset(void)
   }
 
   SekReset();
+  // ..but do not reset SekCycle* to not desync with addons
+
   // s68k doesn't have the TAS quirk, so we just globally set normal TAS handler in MCD mode (used by Batman games).
   SekSetRealTAS(PicoAHW & PAHW_MCD);
-  SekCycleCntT=0;
-
-  if (PicoAHW & PAHW_MCD)
-    // needed for MCD to reset properly, probably some bug hides behind this..
-    memset(Pico.ioports,0,sizeof(Pico.ioports));
 
   Pico.m.dirtyPal = 1;
 
   Pico.m.z80_bank68k = 0;
   Pico.m.z80_reset = 1;
-  memset(Pico.zram, 0, sizeof(Pico.zram)); // ??
 
   PicoDetectRegion();
   Pico.video.status = 0x3428 | Pico.m.pal; // 'always set' bits | vblank | collision | pal
@@ -231,19 +239,20 @@ void PicoLoopPrepare(void)
 // same for Outrunners (92-121, when active is set to 24)
 // 96 is VR hack
 static const int dma_timings[] = {
-  96,  167, 166,  83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy
+  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  // ...
 };
 
 static const int dma_bsycles[] = {
-  (488<<8)/96,  (488<<8)/167, (488<<8)/166, (488<<8)/83,
-  (488<<8)/102, (488<<8)/205, (488<<8)/204, (488<<8)/102,
+  (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
 };
 
+// grossly inaccurate.. FIXME FIXXXMEE
 PICO_INTERNAL int CheckDMA(void)
 {
   int burn = 0, xfers_can, dma_op = Pico.video.reg[0x17]>>6; // see gens for 00 and 01 modes
@@ -267,30 +276,36 @@ PICO_INTERNAL int CheckDMA(void)
     Pico.m.dma_xfers -= xfers_can;
   }
 
-  elprintf(EL_VDPDMA, "~Dma %i op=%i can=%i burn=%i [%i]", Pico.m.dma_xfers, dma_op1, xfers_can, burn, SekCyclesDone());
+  elprintf(EL_VDPDMA, "~Dma %i op=%i can=%i burn=%i [%u]",
+    Pico.m.dma_xfers, dma_op1, xfers_can, burn, SekCyclesDone());
   //dprintf("~aim: %i, cnt: %i", SekCycleAim, SekCycleCnt);
   return burn;
 }
 
 #include "pico_cmn.c"
 
-int z80stopCycle;
-int z80_cycle_cnt;        /* 'done' z80 cycles before z80_run() */
+unsigned int last_z80_sync; /* in 68k cycles */
+int z80_cycle_cnt;
 int z80_cycle_aim;
 int z80_scanline;
 int z80_scanline_cycles;  /* cycles done until z80_scanline */
 
 /* sync z80 to 68k */
-PICO_INTERNAL void PicoSyncZ80(int m68k_cycles_done)
+PICO_INTERNAL void PicoSyncZ80(unsigned int m68k_cycles_done)
 {
+  int m68k_cnt;
   int cnt;
-  z80_cycle_aim = cycles_68k_to_z80(m68k_cycles_done);
+
+  m68k_cnt = m68k_cycles_done - last_z80_sync;
+  z80_cycle_aim += cycles_68k_to_z80(m68k_cnt);
   cnt = z80_cycle_aim - z80_cycle_cnt;
+  last_z80_sync = m68k_cycles_done;
 
   pprof_start(z80);
 
-  elprintf(EL_BUSREQ, "z80 sync %i (%i|%i -> %i|%i)", cnt, z80_cycle_cnt, z80_cycle_cnt / 228,
-    z80_cycle_aim, z80_cycle_aim / 228);
+  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);
 
   if (cnt > 0)
     z80_cycle_cnt += z80_run(cnt);
@@ -310,14 +325,13 @@ void PicoFrame(void)
     goto end;
   }
 
-  // TODO: MCD+32X
-  if (PicoAHW & PAHW_MCD) {
-    PicoFrameMCD();
+  if (PicoAHW & PAHW_32X) {
+    PicoFrame32x(); // also does MCD+32X
     goto end;
   }
 
-  if (PicoAHW & PAHW_32X) {
-    PicoFrame32x();
+  if (PicoAHW & PAHW_MCD) {
+    PicoFrameMCD();
     goto end;
   }