From 144d0348dd8de59c38bd19201fb20f30ecfac5a3 Mon Sep 17 00:00:00 2001
From: Lior Halphon <LIJI32@gmail.com>
Date: Thu, 8 Jun 2017 23:26:04 +0300
Subject: [PATCH] Loading a save state creating during the effect of the
 previous MBC RAM bug will now attempt to fix the (broken) save state.

---
 Core/gb.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Core/gb.c b/Core/gb.c
index 8a14aca..8b7a565 100755
--- a/Core/gb.c
+++ b/Core/gb.c
@@ -302,7 +302,7 @@ int GB_load_state(GB_gameboy_t *gb, const char *path)
         goto error;
     }
 
-    if (gb->mbc_ram_size != save.mbc_ram_size) {
+    if (gb->mbc_ram_size < save.mbc_ram_size) {
         GB_log(gb, "Save state has non-matching MBC RAM size.\n");
         errno = -1;
         goto error;
@@ -320,7 +320,8 @@ int GB_load_state(GB_gameboy_t *gb, const char *path)
         goto error;
     }
 
-    if (fread(gb->mbc_ram, 1, gb->mbc_ram_size, f) != gb->mbc_ram_size) {
+    memset(gb->mbc_ram + save.mbc_ram_size, 0xFF, gb->mbc_ram_size - save.mbc_ram_size);
+    if (fread(gb->mbc_ram, 1, save.mbc_ram_size, f) != save.mbc_ram_size) {
         fclose(f);
         return EIO;
     }