From cb00e7c9972998584fec5c31f82c4a4e64578967 Mon Sep 17 00:00:00 2001
From: aliaspider
Date: Tue, 10 Nov 2015 21:54:46 +0100
Subject: another one.

---
 src/gfx16.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gfx16.c b/src/gfx16.c
index 2ad156f..7480a9b 100644
--- a/src/gfx16.c
+++ b/src/gfx16.c
@@ -2607,6 +2607,7 @@ static void S9xUpdateScreenTransparency()  // ~30-50ms! (called from FLUSH_REDRA
                         "    bmi     2f				\n"
                         "    mov     r1, r0	\n"
                         "    mov     r2, r0	\n"
+                        "    bic     %[p], #3 \n"
 
                         "1:	\n"
                         "    subs    %[width], %[width], #8	\n"
@@ -2616,6 +2617,7 @@ static void S9xUpdateScreenTransparency()  // ~30-50ms! (called from FLUSH_REDRA
                         "2:	\n"
                         "    tst     %[width], #1		\n"
                         "    strneh  %[fixedcolour], [%[p]], #2	\n"
+                        "    bic     %[p], #3 \n"
 
                         "    tst     %[width], #2		\n"
                         "    strne   %[fixedcolour], [%[p]], #4	\n"
-- 
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