From 301926ebfcd444881e7aa41d6ed94834a2206233 Mon Sep 17 00:00:00 2001
From: adavie <adavie@8b62c5a3-ac7e-4cc8-8f21-d9a121418aba>
Date: Tue, 29 Jul 2014 13:25:23 +0000
Subject: [PATCH] Implemented autodetect for DASH scheme. Requires 'TJAD' to be
 present in ROM.

git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@2965 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
---
 src/emucore/Cart.cxx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/emucore/Cart.cxx b/src/emucore/Cart.cxx
index bd13d4c27..7662ae786 100644
--- a/src/emucore/Cart.cxx
+++ b/src/emucore/Cart.cxx
@@ -518,6 +518,10 @@ string Cartridge::autodetectType(const uInt8* image, uInt32 size)
       type = "4K";  // Most common bankswitching type
   }
 
+  // Because it's a variable size ROM format, DASH check is independent of image size and comes last
+  if(isProbablyDASH(image, size))
+    type = "DASH";
+
   return type;
 }
 
@@ -688,7 +692,9 @@ bool Cartridge::isProbablyCV(const uInt8* image, uInt32 size)
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 bool Cartridge::isProbablyDASH(const uInt8* image, uInt32 size)
 {
-  return false;  // TODO - add autodetection
+  // DASH cart is identified key 'TJAD' in the ROM
+  uInt8 signature[] = { 0x54, 0x4a, 0x41, 0x44 };
+  return searchForBytes(image, size, signature, 4, 1);
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -