# HG changeset patch
# User Mike Pavone <pavone@retrodev.com>
# Date 1379314149 25200
# Node ID 5d7bc113653b70112e6fb9ea8ee8e81d419c8c78
# Parent  50e0cb475294724f912f4c06e54b6d594316c42c
Clear the low 2 bits of CD when a register is written to

diff -r 50e0cb475294 -r 5d7bc113653b vdp.c
--- a/vdp.c	Sun Sep 15 23:40:18 2013 -0700
+++ b/vdp.c	Sun Sep 15 23:49:09 2013 -0700
@@ -1489,6 +1489,7 @@
 						context->framebuf = context->oddbuf;
 					}
 				}
+				context->cd &= 0x3C;
 			}
 		} else {
 			context->flags |= FLAG_PENDING;