From d7f3efcbf84bdce4f6663485cce94ac2d20076ca Mon Sep 17 00:00:00 2001
From: jbo_85 <>
Date: Sun, 23 Apr 2006 00:55:20 +0000
Subject: [PATCH] Fixed SRAM mapping again. Fixed Dragon Knight 4.

---
 zsnes/src/cpu/memtable.c |  4 +---
 zsnes/src/initc.c        | 17 ++++++++++++++---
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/zsnes/src/cpu/memtable.c b/zsnes/src/cpu/memtable.c
index c1bd2907..a74ff9b2 100644
--- a/zsnes/src/cpu/memtable.c
+++ b/zsnes/src/cpu/memtable.c
@@ -290,9 +290,7 @@ mrwp obc1bank = { OBC1Read8b, OBC1Write8b, OBC1Read16b, OBC1Write16b };
 void SetAddressingModes()
 {                                       //  Banks
   map_mem(0x00, &regbank,  0x40);       // 00 - 3F
-  map_mem(0x40, &membank,  0x30);       // 40 - 6F
-  map_mem(0x70, &srambank, 0x08);       // 70 - 77
-  map_mem(0x78, &membank,  0x06);       // 78 - 7D
+  map_mem(0x40, &membank,  0x3E);       // 40 - 7D
   map_mem(0x7E, &wrambank, 0x01);       // 7E
   map_mem(0x7F, &erambank, 0x01);       // 7F
   map_mem(0x80, &regbank,  0x40);       // 80 - BF
diff --git a/zsnes/src/initc.c b/zsnes/src/initc.c
index ac2cc1d9..44689f85 100755
--- a/zsnes/src/initc.c
+++ b/zsnes/src/initc.c
@@ -1970,9 +1970,20 @@ void CheckROMType()
 
   disablespcclr = (memcmp(ROM+Hi, "\0x42\0x53\0x20\0x5A", 4)) ? 0 : 1;
 
-  if ((romtype == 1) && (!SDD1Enable))
-  {  // Non-SDD1 LoROM SRAM mapping, banks F0 - F3
-    map_mem(0xF0, &srambank, 4);
+  // LoROM SRAM mapping
+  if (romtype == 1)
+  {  // banks 70 - 77
+    map_mem(0x70, &srambank, 0x08);
+
+    if (!BSEnable)
+    {  // banks 78 - 7D (not for BS)
+      map_mem(0x78, &srambank, 0x06);
+    }
+
+    if (!SDD1Enable)
+    {  // banks F0 - FF (not for S-DD1)
+      map_mem(0xF0, &srambank, 0x10);
+    }
   }
 
   // Setup DSP-X stuff