X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=platform%2Fgp2x%2Fgp2x.c;h=d6a701c97801ec529ccc681f899531d0e4e5c6a4;hb=aae35e84da8631de2c0e0faec578bc7f187c3b62;hp=f138be636ae501fb2bf8020892404014bed2a686;hpb=0af33fe0ef24a3e3b65217ad0d7aa2db03d16fc1;p=picodrive.git

diff --git a/platform/gp2x/gp2x.c b/platform/gp2x/gp2x.c
index f138be6..d6a701c 100644
--- a/platform/gp2x/gp2x.c
+++ b/platform/gp2x/gp2x.c
@@ -34,6 +34,7 @@
 
 #include "gp2x.h"
 #include "usbjoy.h"
+#include "asmutils.h"
 
 volatile unsigned short *gp2x_memregs;
 //static
@@ -149,11 +150,10 @@ void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)
 }
 
 
-/* LCD updates @ 80Hz? */
 void gp2x_video_wait_vsync(void)
 {
-	gp2x_memregs[0x2846>>1] = 0x20|2; //(gp2x_memregs[0x2846>>1] | 0x20) & ~2;
-	while(!(gp2x_memregs[0x2846>>1] & 2));// usleep(1);
+	unsigned short v = gp2x_memregs[0x1182>>1];
+	while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) spend_cycles(1024);
 }