From 3b82f054ce284da6e5f17adb6e92552c58fca22a Mon Sep 17 00:00:00 2001
From: n-a-c-h <>
Date: Sun, 4 Jan 2004 17:01:31 +0000
Subject: [PATCH] Added support for Same Game add-ons to use Same Game base.

---
 zsnes/src/initc.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/zsnes/src/initc.c b/zsnes/src/initc.c
index e1f8a919..b09f3aba 100755
--- a/zsnes/src/initc.c
+++ b/zsnes/src/initc.c
@@ -596,6 +596,33 @@ void loadZipFile()
   }
 }
 
+void SplitSupport()
+{
+  unsigned char *ROM = (unsigned char *)romdata;
+  
+  //Same Game add on  
+  if (ROM[Hi+26] == 0x33 && curromspace == 0x80000 &&
+      !ROM[Hi+21] && !ROM[Hi+22] && !ROM[Hi+23])
+  {
+    curromspace = 0;
+    memcpy(ROM+0x200000, ROM, 0x80000);  
+    strcpy(ZOpenFileName, "SAMEGAME.ZIP");
+    loadZipFile();
+    if (curromspace == 0x100200)
+    {
+      memmove(ROM, ROM+512, 0x100000);
+    }
+    else if (curromspace != 0x100000)
+    {
+      curromspace = 0;
+      return;
+    }
+    memcpy(ROM+0x100000, ROM, 0x100000);
+    curromspace = 0x280000;
+  }          
+
+}
+
 extern bool Sup48mbit;
 extern bool Sup16mbit;
 void findZipIPS(char *);
@@ -681,6 +708,8 @@ void loadROM()
     memmove((unsigned char *)romdata, ((unsigned char *)romdata)+512, curromspace);  
   }
 
+  SplitSupport();
+
   if (isZip) { findZipIPS(ZOpenFileName); }
 }