From c009c65c45f13bfc598f92bcf5c01e62fc1b0834 Mon Sep 17 00:00:00 2001
From: Franco Colmenarez <info@francoacg.com>
Date: Sat, 20 Nov 2021 09:38:55 -0500
Subject: [PATCH] mbc5 bitmask

---
 src/rom.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rom.rs b/src/rom.rs
index 4b0eec1..98a6f35 100644
--- a/src/rom.rs
+++ b/src/rom.rs
@@ -704,7 +704,7 @@ impl ROM for MBC5 {
         if address <= 0x1FFF {
             self.ram_enable = data == 0b00001010;
         } else if address >= 0x2000 && address <= 0x2FFF {
-            self.rom_bank = (self.rom_bank & 0x000) | data as u16;
+            self.rom_bank = (self.rom_bank & 0x100) | data as u16;
         } else if address >= 0x3000 && address <= 0x3FFF {
             self.rom_bank = (((data & 1) as u16) << 8) | (self.rom_bank & 0xFF);
         } else if address >= 0x4000 && address <= 0x5FFF {