X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fvdp.h;h=628f7b068b8671e95451d02fee98db60ea14b739;hb=88989dba0a2f0b59d782d25e01227df04452e8d3;hp=82e6747a69a6c464165f526bfc7f90dbdf8f3fab;hpb=c01146f8ecd395bfcdeb8af3b50f8a9ab2b87488;p=mdlife

diff --git a/src/vdp.h b/src/vdp.h
index 82e6747..628f7b0 100644
--- a/src/vdp.h
+++ b/src/vdp.h
@@ -9,6 +9,16 @@
 #define vdp_setreg(reg, val) \
 	(VDP_CTL = 0x8000 | ((reg) << 8) | (val))
 
+#define vdp_wait_vblank() \
+	while(!(VDP_STAT & VDP_ST_VBLANK))
+
+#define vdp_wait_vblank_end() \
+	while((VDP_STAT & VDP_ST_VBLANK))
+
+#define vdp_vsync() \
+	(vdp_wait_vblank_end(), vdp_wait_vblank())
+
+
 #define VDP_TILE_BG			0
 #define VDP_TILE_FG			0x8000
 #define VDP_TILE_PAL(x)		((x) << 13)