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Added bankswitch autodetection for '0840' ROMs. 

git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@1696 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
stephena 2009-04-11 20:09:31 +00:00
parent 8a129fa94f
commit 7a414429be
1 changed files with 11 additions and 3 deletions
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14
stella/src/emucore/Cart.cxx
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@ -13,7 +13,7 @@
// See the file "license" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//
// $Id: Cart.cxx,v 1.52 2009-04-11 19:48:25 stephena Exp $
// $Id: Cart.cxx,v 1.53 2009-04-11 20:09:31 stephena Exp $
//============================================================================
#include <cassert>
@ -490,8 +490,16 @@ bool Cartridge::isProbablySB(const uInt8* image, uInt32 size)
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool Cartridge::isProbably0840(const uInt8* image, uInt32 size)
{
// TODO - add autodetection for this type
return false;
// 0840 cart bankswitching is triggered by accessing addresses 0x0800
// or 0x0840
uInt8 signature[2][3] = {
{ 0xAD, 0x00, 0x08 }, // LDA $0800
{ 0xAD, 0x40, 0x08 } // LDA $0840
};
if(searchForBytes(image, size, signature[0], 3, 1))
return true;
else
return searchForBytes(image, size, signature[1], 3, 1);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -