From 35a56e9507426870654ba367c969e047c5242d2f Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Fri, 3 Aug 2018 18:39:26 -0700
Subject: [PATCH] GB MBC: Fix MMM01 detection heuristic

---
 src/gb/mbc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gb/mbc.c b/src/gb/mbc.c
index 05160d876..2da6a264e 100644
--- a/src/gb/mbc.c
+++ b/src/gb/mbc.c
@@ -141,7 +141,7 @@ void GBMBCInit(struct GB* gb) {
 	if (gb->memory.rom) {
 		if (gb->memory.romSize >= 0x8000) {
 			const struct GBCartridge* cartFooter = (const struct GBCartridge*) &gb->memory.rom[gb->memory.romSize - 0x7F00];
-			if (doCrc32(cartFooter->logo, sizeof(cartFooter->logo)) == GB_LOGO_HASH) {
+			if (doCrc32(cartFooter->logo, sizeof(cartFooter->logo)) == GB_LOGO_HASH && cartFooter->type >= 0x0B && cartFooter->type <= 0x0D) {
 				cart = cartFooter;
 			}
 		}