From aa00a0b53cd984d37d454fd74360216dea966d2a Mon Sep 17 00:00:00 2001
From: Mike Pavone <pavone@retrodev.com>
Date: Sun, 9 Dec 2012 18:40:45 -0800
Subject: Add debug render mode and fix vertical flip bit for bg tiles

---
 vdp.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'vdp.h')

diff --git a/vdp.h b/vdp.h
index d4b7f49..6c9bbf1 100644
--- a/vdp.h
+++ b/vdp.h
@@ -18,6 +18,14 @@
 #define MAX_SPRITES_FRAME 80
 #define MAX_SPRITES_FRAME_H32 64
 
+#define FBUF_BIT_PRIORITY 0x1000
+#define FBUF_SRC_MASK 0xE000
+#define FBUF_SRC_A 0x0000
+#define FBUF_SRC_W 0x2000
+#define FBUF_SRC_B 0x4000
+#define FBUF_SRC_S 0x6000
+#define FBUF_SRC_BG 0x8000
+
 enum {
 	REG_MODE_1=0,
 	REG_MODE_2,
-- 
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