git.y1.nz

commit 8d063391a474b6a5bcaf60cf11f2616fc6a6d3fd
parent 9f53fcc30bcbb069cfd172c1bd54cdd8d03e5258
Author: Lior Halphon <LIJI32@gmail.com>
Date:   Sat, 13 Jan 2024 18:06:22 +0200

Support for certain bootlag games with malformed headers, fixes #585

Diffstat:
M
Core/mbc.c
8
++++++++

1 file changed, 8 insertions(+), 0 deletions(-)
diff --git a/Core/mbc.c b/Core/mbc.c
@@ -195,6 +195,14 @@ void GB_configure_cart(GB_gameboy_t *gb)
             GB_log(gb, "Cartridge type %02x is not yet supported.\n", gb->rom[0x147]);
         }
     }
+    
+    if (!gb->cartridge_type->has_ram &&
+        gb->cartridge_type->mbc_type != GB_NO_MBC &&
+        gb->cartridge_type->mbc_type != GB_TPP1 &&
+        gb->rom[0x149]) {
+        GB_log(gb, "ROM header reports no RAM, but also reports a non-zero RAM size. Assuming cartridge has RAM.\n");
+        gb->cartridge_type++;
+    }
         
     size_t old_mbc_ram_size = gb->mbc_ram_size;
     gb->mbc_ram_size = 0;

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