DMA and sprites (not working yet)

[mdlife] / src / vdp.h

diff --git a/src/vdp.h b/src/vdp.h
index 82e6747..628f7b0 100644 (file)
--- 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)