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Implement op -0x5f

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This commit is contained in:
Takashi Toyoshima 2014-12-06 23:14:21 +09:00
parent 4c3a822893
commit 8e22cfe6cf
1 changed files with 49 additions and 30 deletions
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6502.S
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@ -444,6 +444,14 @@ op44:
op47: op47:
op4b: op4b:
op4f: op4f:
op52:
op53:
op54:
op57:
op5a:
op5b:
op5c:
op5f:
_nop _nop
_decode _decode
@ -704,39 +712,50 @@ op4e: // LSR - Absolute
_toAddr _toAddr
_decode _decode
op50: op50: // BVC (V==0)
b quit movs r0, #FLAG_V
op51: tst SR, r0
b quit bne 1f
op52: _bxx
b quit 1:
op53: _decode
b quit
op54: op51: // EOR - (Indirect), Y
b quit _fromIndirectIndex
op55: _lop eors
b quit _decode
op56:
b quit op55: // EOR - Zero Page, X
op57: _fromZeroIndex RX
b quit _lop eors
_decode
op56: // LSR - Zero Page, X
_fromZeroIndex RX
_lsr
_toAddr
_decode
op58: // CLI op58: // CLI
_clx FLAG_I _clx FLAG_I
_decode _decode
op59:
b quit op59: // EOR - Absolute, Y
op5a: _fromAbsoluteIndexed RY
b quit _lop eors
op5b: _decode
b quit
op5c: op5d: // EOR - Absolute, X
b quit _fromAbsoluteIndexed RX
op5d: _lop eors
b quit _decode
op5e:
b quit op5e: // LSR - Absolute, X
op5f: _fromAbsoluteIndexed RX
b quit _lsr
_toAddr
_decode
op60: op60:
b quit b quit
op61: op61: