X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fvideoport.c;h=6c876aeaad02f3a4102332e576fc47af6d926d44;hb=4e3551a5f617a424143aca227a2ce89cfb7d8640;hp=c1a1ba908bff0bc09a9d53b04617fba22d90f3c8;hpb=697746df021a83dcb556afdb36abc6977780985c;p=picodrive.git

diff --git a/pico/videoport.c b/pico/videoport.c
index c1a1ba9..6c876ae 100644
--- a/pico/videoport.c
+++ b/pico/videoport.c
@@ -1,15 +1,15 @@
-// PicoDrive
-
-// (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2006-2008, Grazvydas "notaz" Ignotas
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
+/*
+ * PicoDrive
+ * (c) Copyright Dave, 2004
+ * (C) notaz, 2006-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include "pico_int.h"
-#include "cd/gfx_cd.h"
 
+int line_base_cycles;
 extern const unsigned char  hcounts_32[];
 extern const unsigned char  hcounts_40[];
 
@@ -93,8 +93,7 @@ static void DmaSlow(int len)
     SekCyclesDone(), SekPc);
 
   Pico.m.dma_xfers += len;
-  if ((PicoAHW & PAHW_MCD) && (PicoOpt & POPT_EN_MCD_PSYNC)) SekCyclesBurn(CheckDMA());
-  else SekEndTimeslice(SekCyclesLeftNoMCD - CheckDMA());
+  SekCyclesBurnRun(CheckDMA());
 
   if ((source&0xe00000)==0xe00000) { // Ram
     pd=(u16 *)(Pico.ram+(source&0xfffe));
@@ -208,7 +207,8 @@ static void DmaSlow(int len)
       break;
 
     default:
-      elprintf(EL_VDPDMA|EL_ANOMALY, "DMA with bad type %i", Pico.video.type);
+      if (Pico.video.type != 0 || (EL_LOGMASK & EL_VDPDMA))
+        elprintf(EL_VDPDMA|EL_ANOMALY, "DMA with bad type %i", Pico.video.type);
       break;
   }
   // remember addr
@@ -361,8 +361,7 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)
         pvid->lwrite_cnt++;
         if (pvid->lwrite_cnt >= 4) pvid->status|=0x100; // FIFO full
         if (pvid->lwrite_cnt >  4) {
-          SekCyclesBurn(32); // penalty // 488/12-8
-          if (SekCycleCnt>=SekCycleAim) SekEndRun(0);
+          SekCyclesBurnRun(32); // penalty // 488/12-8
         }
         elprintf(EL_ASVDP, "VDP data write: %04x [%06x] {%i} #%i @ %06x", d, Pico.video.addr,
                  Pico.video.type, pvid->lwrite_cnt, SekPc);
@@ -397,7 +396,8 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)
           return;
         }
 
-        if (num == 1 && !(d&0x40) && SekCyclesLeft > 390) blank_on = 1;
+        if (num == 1 && !(d&0x40) && SekCyclesDone() - line_base_cycles <= 488-390)
+          blank_on = 1;
         DrawSync(blank_on);
         pvid->reg[num]=(unsigned char)d;
         switch (num)
@@ -424,7 +424,7 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)
 update_irq:
 #ifndef EMU_CORE_DEBUG
         // update IRQ level
-        if (!SekShouldInterrupt) // hack
+        if (!SekShouldInterrupt()) // hack
         {
           int lines, pints, irq=0;
           lines = (pvid->reg[1] & 0x20) | (pvid->reg[0] & 0x10);
@@ -458,7 +458,8 @@ PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a)
     unsigned int d;
     d=pv->status;
     //if (PicoOpt&POPT_ALT_RENDERER) d|=0x0020; // sprite collision (Shadow of the Beast)
-    if (SekCyclesLeft < 84+4)      d|=0x0004; // H-Blank (Sonic3 vs)
+    if (SekCyclesDone() - line_base_cycles >= 488-88)
+      d|=0x0004; // H-Blank (Sonic3 vs)
 
     d |= ((pv->reg[1]&0x40)^0x40) >> 3;  // set V-Blank if display is disabled
     d |= (pv->pending_ints&0x20)<<2;     // V-int pending?
@@ -488,12 +489,11 @@ PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a)
   if ((a&0x1c)==0x08)
   {
     unsigned int d;
-    int lineCycles;
 
-    lineCycles = (488-SekCyclesLeft)&0x1ff;
+    d = (SekCyclesDone() - line_base_cycles) & 0x1ff; // FIXME
     if (Pico.video.reg[12]&1)
-         d = hcounts_40[lineCycles];
-    else d = hcounts_32[lineCycles];
+         d = hcounts_40[d];
+    else d = hcounts_32[d];
 
     elprintf(EL_HVCNT, "hv: %02x %02x (%i) @ %06x", d, Pico.video.v_counter, SekCyclesDone(), SekPc);
     return d | (Pico.video.v_counter << 8);
@@ -527,7 +527,7 @@ unsigned int PicoVideoRead8(unsigned int a)
       //if (PicoOpt&POPT_ALT_RENDERER) d|=0x0020; // sprite collision (Shadow of the Beast)
       d |= ((Pico.video.reg[1]&0x40)^0x40) >> 3;  // set V-Blank if display is disabled
       d |= (Pico.video.pending_ints&0x20)<<2;     // V-int pending?
-      if (SekCyclesLeft < 84+4) d |= 4;    // H-Blank
+      if (SekCyclesDone() - line_base_cycles >= 488-88) d |= 4;    // H-Blank
       Pico.video.pending = 0;
       elprintf(EL_SR, "SR read (l): %02x @ %06x", d, SekPc);
       return d;
@@ -535,7 +535,7 @@ unsigned int PicoVideoRead8(unsigned int a)
       elprintf(EL_HVCNT, "vcounter: %02x (%i) @ %06x", Pico.video.v_counter, SekCyclesDone(), SekPc);
       return Pico.video.v_counter;
     case 9:
-      d = (488-SekCyclesLeft)&0x1ff;
+      d = (SekCyclesDone() - line_base_cycles) & 0x1ff; // FIXME
       if (Pico.video.reg[12]&1)
            d = hcounts_40[d];
       else d = hcounts_32[d];
@@ -545,3 +545,5 @@ unsigned int PicoVideoRead8(unsigned int a)
 
   return 0;
 }
+
+// vim:shiftwidth=2:ts=2:expandtab