X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2FVideoPort.c;h=7852b2510d3381c9bb50a4768f37eba8ffdd0307;hb=fbc65db75502192750f19f5cc8c5543aef625cb1;hp=7a38ea9c43af928445448702647978754c65c173;hpb=9761a7d0d41ad429d53c64ff35fe061c38092dbf;p=picodrive.git

diff --git a/Pico/VideoPort.c b/Pico/VideoPort.c
index 7a38ea9..7852b25 100644
--- a/Pico/VideoPort.c
+++ b/Pico/VideoPort.c
@@ -1,7 +1,7 @@
-// This is part of Pico Library
+// PicoDrive
 
 // (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2006-2007, Grazvydas "notaz" Ignotas
+// (c) Copyright 2006-2008, Grazvydas "notaz" Ignotas
 // Free for non-commercial use.
 
 // For commercial use, separate licencing terms must be obtained.
@@ -35,7 +35,9 @@ static void VideoWrite(u16 d)
   {
     case 1: if(a&1) d=(u16)((d<<8)|(d>>8)); // If address is odd, bytes are swapped (which game needs this?)
             Pico.vram [(a>>1)&0x7fff]=d;
-            rendstatus |= PDRAW_DIRTY_SPRITES; break;
+            if (a - ((unsigned)(Pico.video.reg[5]&0x7f) << 9) < 0x400)
+              rendstatus |= PDRAW_DIRTY_SPRITES;
+            break;
     case 3: Pico.m.dirtyPal = 1;
             Pico.cram [(a>>1)&0x003f]=d; break; // wraps (Desert Strike)
     case 5: Pico.vsram[(a>>1)&0x003f]=d; break;
@@ -486,7 +488,7 @@ PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a)
   {
     unsigned int d;
     int lineCycles;
-    
+
     lineCycles = (488-SekCyclesLeft)&0x1ff;
     if (Pico.video.reg[12]&1)
          d = hcounts_40[lineCycles];