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Fixed long-standing bug involving SCORE mode emulation for the playfield. 

It seems the Priority bit overrides SCORE mode.  This fixes a very
noticable bug in Swordquest Waterworld.


git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@1677 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
stephena 2009-02-21 20:56:08 +00:00
parent 2fe6007b31
commit 548af979de
1 changed files with 4 additions and 4 deletions
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8
stella/src/emucore/TIA.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: TIA.cxx,v 1.104 2009-02-08 21:07:06 stephena Exp $
// $Id: TIA.cxx,v 1.105 2009-02-21 20:56:08 stephena Exp $
//============================================================================
//#define DEBUG_HMOVE
@ -696,9 +696,10 @@ inline void TIA::updateFrameScanline(uInt32 clocksToUpdate, uInt32 hpos)
break;
}
// Playfield is enabled and the score bit is not set
// Playfield is enabled and the priority bit is set (score bit is overridden)
case PFBit:
case PFBit | PriorityBit:
case PFBit | PriorityBit | ScoreBit:
{
uInt32* mask = &myCurrentPFMask[hpos];
@ -717,9 +718,8 @@ inline void TIA::updateFrameScanline(uInt32 clocksToUpdate, uInt32 hpos)
break;
}
// Playfield is enabled and the score bit is set
// Playfield is enabled and the score bit is set (without priority bit)
case PFBit | ScoreBit:
case PFBit | ScoreBit | PriorityBit:
{
uInt32* mask = &myCurrentPFMask[hpos];