X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fpico.c;h=0404367c327c2c960a15b8e12d68224284efc3d3;hb=e64886365da9e882b54e06ab683ee4db60171e32;hp=1c58f227016502ecddfd918338a9aa3916e4c4fd;hpb=ea38612fad50103e224a3d00492d40b7dcff9e94;p=picodrive.git

diff --git a/pico/pico.c b/pico/pico.c
index 1c58f22..0404367 100644
--- a/pico/pico.c
+++ b/pico/pico.c
@@ -22,7 +22,8 @@ int PicoAutoRgnOrder;
 
 struct PicoSRAM SRam;
 int emustatus;         // rapid_ym2612, multi_ym_updates
-int scanlines_total;
+
+struct PicoTiming timing;
 
 void (*PicoWriteSound)(int len) = NULL; // called at the best time to send sound buffer (PsndOut) to hardware
 void (*PicoResetHook)(void) = NULL;
@@ -38,6 +39,7 @@ void PicoInit(void)
 
   Pico.est.Pico_video = &Pico.video;
   Pico.est.Pico_vram = Pico.vram;
+  Pico.est.PicoOpt = &PicoOpt;
 
   // Init CPUs:
   SekInit();
@@ -46,6 +48,9 @@ void PicoInit(void)
   PicoInitMCD();
   PicoSVPInit();
   Pico32xInit();
+
+  PicoDrawInit();
+  PicoDraw2Init();
 }
 
 // to be called once on emu exit
@@ -223,29 +228,24 @@ 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
@@ -272,38 +272,32 @@ 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"
 
-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(unsigned int m68k_cycles_done)
 {
   int m68k_cnt;
   int cnt;
 
-  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;
+  m68k_cnt = m68k_cycles_done - timing.m68c_frame_start;
+  timing.z80c_aim = cycles_68k_to_z80(m68k_cnt);
+  cnt = timing.z80c_aim - timing.z80c_cnt;
 
   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);
+    timing.z80c_cnt, timing.z80c_cnt * 15 / 7 / 488,
+    timing.z80c_aim, timing.z80c_aim * 15 / 7 / 488);
 
   if (cnt > 0)
-    z80_cycle_cnt += z80_run(cnt);
+    timing.z80c_cnt += z80_run(cnt);
 
   pprof_end(z80);
 }