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Fixed typo with double ampersand instead of the required single ampersand 

in evaluating the SBC opcode.  Technically, the code does the same thing
in C++, but that was only a fluke :)  Thanks to JLA for the bug report.


git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@1485 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
stephena 2008-04-27 11:53:22 +00:00
parent bdedb60d9d
commit 41f27f31a4
3 changed files with 27 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
stella/src/emucore/m6502/src/M6502.m4
View File

@ -13,14 +13,14 @@
// See the file "license" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//
// $Id: M6502.m4,v 1.6 2008-02-23 20:06:36 stephena Exp $
// $Id: M6502.m4,v 1.7 2008-04-27 11:53:22 stephena Exp $
//============================================================================
/**
Code and cases to emulate each of the 6502 instruction
@author Bradford W. Mott
@version $Id: M6502.m4,v 1.6 2008-02-23 20:06:36 stephena Exp $
@version $Id: M6502.m4,v 1.7 2008-04-27 11:53:22 stephena Exp $
*/
#ifndef NOTSAMEPAGE
@ -546,7 +546,7 @@ define(M6502_SBC, `{
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;

24
stella/src/emucore/m6502/src/M6502Hi.ins
View File

@ -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: M6502Hi.ins,v 1.4 2008-02-23 20:06:37 stephena Exp $
// $Id: M6502Hi.ins,v 1.5 2008-04-27 11:53:22 stephena Exp $
//============================================================================
/**
@ -21,7 +21,7 @@
high compatibility emulation
@author Bradford W. Mott
@version $Id: M6502Hi.ins,v 1.4 2008-02-23 20:06:37 stephena Exp $
@version $Id: M6502Hi.ins,v 1.5 2008-04-27 11:53:22 stephena Exp $
*/
#ifndef NOTSAMEPAGE
@ -114,14 +114,14 @@
// See the file "license" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//
// $Id: M6502Hi.ins,v 1.4 2008-02-23 20:06:37 stephena Exp $
// $Id: M6502Hi.ins,v 1.5 2008-04-27 11:53:22 stephena Exp $
//============================================================================
/**
Code and cases to emulate each of the 6502 instruction
@author Bradford W. Mott
@version $Id: M6502Hi.ins,v 1.4 2008-02-23 20:06:37 stephena Exp $
@version $Id: M6502Hi.ins,v 1.5 2008-04-27 11:53:22 stephena Exp $
*/
#ifndef NOTSAMEPAGE
@ -3502,7 +3502,7 @@ case 0xeb:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3540,7 +3540,7 @@ case 0xe5:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3581,7 +3581,7 @@ case 0xf5:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3621,7 +3621,7 @@ case 0xed:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3663,7 +3663,7 @@ case 0xfd:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3705,7 +3705,7 @@ case 0xf9:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3748,7 +3748,7 @@ case 0xe1:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3791,7 +3791,7 @@ case 0xf1:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;

24
stella/src/emucore/m6502/src/M6502Low.ins
View File

@ -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: M6502Low.ins,v 1.6 2008-02-23 20:06:37 stephena Exp $
// $Id: M6502Low.ins,v 1.7 2008-04-27 11:53:22 stephena Exp $
//============================================================================
/**
@ -21,7 +21,7 @@
low compatibility emulation
@author Bradford W. Mott
@version $Id: M6502Low.ins,v 1.6 2008-02-23 20:06:37 stephena Exp $
@version $Id: M6502Low.ins,v 1.7 2008-04-27 11:53:22 stephena Exp $
*/
#ifndef NOTSAMEPAGE
@ -115,14 +115,14 @@
// See the file "license" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//
// $Id: M6502Low.ins,v 1.6 2008-02-23 20:06:37 stephena Exp $
// $Id: M6502Low.ins,v 1.7 2008-04-27 11:53:22 stephena Exp $
//============================================================================
/**
Code and cases to emulate each of the 6502 instruction
@author Bradford W. Mott
@version $Id: M6502Low.ins,v 1.6 2008-02-23 20:06:37 stephena Exp $
@version $Id: M6502Low.ins,v 1.7 2008-04-27 11:53:22 stephena Exp $
*/
#ifndef NOTSAMEPAGE
@ -3491,7 +3491,7 @@ case 0xeb:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3530,7 +3530,7 @@ case 0xe5:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3569,7 +3569,7 @@ case 0xf5:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3609,7 +3609,7 @@ case 0xed:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3657,7 +3657,7 @@ case 0xfd:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3705,7 +3705,7 @@ case 0xf9:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3745,7 +3745,7 @@ case 0xe1:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;
@ -3792,7 +3792,7 @@ case 0xf1:
difference += 100;
// Z flag calculation ignores D flag
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) && 0xff;
notZ = (((Int16)A) + ((Int16)~operand) + (C ? 1 : 0)) & 0xff;
A = ourBCDTable[1][difference];
N = A & 0x80;