mirror of
https://github.com/fachat/xa65.git
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337 lines
6.5 KiB
ArmAsm
337 lines
6.5 KiB
ArmAsm
; Copyright (c) 2014, Alessandro Gatti - frob.it
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; All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions are met:
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;
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; 1. Redistributions of source code must retain the above copyright notice,
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; this list of conditions and the following disclaimer.
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;
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; 2. Redistributions in binary form must reproduce the above copyright notice,
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; this list of conditions and the following disclaimer in the documentation
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; and/or other materials provided with the distribution.
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;
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; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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; ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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; CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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; ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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; POSSIBILITY OF SUCH DAMAGE.
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#define ZEROPAGE_0 $0
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#define ZEROPAGE_1 $1
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#define ZEROPAGE_2 $2
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#define ZEROPAGE_3 $3
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#define ZEROPAGE_4 $4
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#define ZEROPAGE_5 $5
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#define ZEROPAGE_6 $6
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#define ZEROPAGE_7 $7
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#define ZEROPAGE_8 $8
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#define ZEROPAGE_9 $9
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#define ZEROPAGE_A $a
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#define ZEROPAGE_B $b
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#define ZEROPAGE_C $c
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#define ZEROPAGE_D $d
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#define ZEROPAGE_E $e
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#define ZEROPAGE_F $f
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*=$1000
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row0 BRK
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ORA (ZEROPAGE_0,X)
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COP #$00
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ORA ZEROPAGE_0,S
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TSB ZEROPAGE_0
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ORA ZEROPAGE_0
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ASL ZEROPAGE_0
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ORA [ZEROPAGE_0]
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PHP
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ORA #$00
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ASL
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PHD
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TSB datablockabs
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ORA datablockabs
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ASL datablockabs
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ORA @datablockabs+@$FF0000
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JMP row1
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row1 BPL row1_target
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ORA (ZEROPAGE_1),Y
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row1_target ORA (ZEROPAGE_1)
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ORA (ZEROPAGE_1,S),Y
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TRB ZEROPAGE_1
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ORA ZEROPAGE_1,X
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ASL ZEROPAGE_1,X
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ORA [ZEROPAGE_1],Y
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CLC
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ORA datablockabs,Y
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INC
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TCS
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TRB datablockabs
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ORA datablockabs,X
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ASL datablockabs,X
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ORA @datablockabs+@$FF0000,X
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JMP row2
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row2 JSR farcode
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AND (ZEROPAGE_2,X)
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JSR @datablockabs+@$FF0000
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AND ZEROPAGE_2,S
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BIT ZEROPAGE_2
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AND ZEROPAGE_2
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ROL ZEROPAGE_2
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AND [ZEROPAGE_2]
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PLP
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AND #$22
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ROL
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PLD
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BIT datablockabs
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AND datablockabs
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ROL datablockabs
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AND @datablockabs+@$FF0000
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JMP row3
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row3 BMI row3_target
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AND (ZEROPAGE_3),Y
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row3_target AND (ZEROPAGE_3)
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AND (ZEROPAGE_3,S),Y
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BIT ZEROPAGE_3,X
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AND ZEROPAGE_3,X
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ROL ZEROPAGE_3,X
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AND [ZEROPAGE_3],Y
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SEC
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AND datablockabs,Y
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DEC
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TSC
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BIT datablockabs,X
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AND datablockabs,X
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ROL datablockabs,X
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AND @datablockabs+@$FF0000,X
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JMP row4
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row4 RTI
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EOR (ZEROPAGE_4,X)
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.byte $42 ; WDM
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EOR ZEROPAGE_3,S
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MVP $44,$44 ;$4444 ; Should be $44, $44 instead
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EOR ZEROPAGE_4
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LSR ZEROPAGE_4
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EOR [ZEROPAGE_4]
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PHA
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EOR #$44
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LSR
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PHK
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JMP farcode
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EOR datablockabs
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LSR datablockabs
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EOR @datablockabs+@$FF0000
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JMP row5
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row5 BVC row5_target
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EOR (ZEROPAGE_5),Y
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row5_target EOR (ZEROPAGE_5)
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EOR (ZEROPAGE_5,S),Y
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MVN $55,$55 ; $5555 ; Should be $55, $55 instead
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EOR ZEROPAGE_5,X
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LSR ZEROPAGE_5,X
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EOR [ZEROPAGE_5],Y
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CLI
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EOR datablockabs,Y
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PHY
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TCD
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JMP @datablockabs+@$FF0000
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EOR datablockabs,X
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LSR datablockabs,X
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EOR @datablockabs+@$FF0000,X
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JMP row6
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row6 RTS
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ADC (ZEROPAGE_6,X)
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PER datablockabs
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ADC ZEROPAGE_6,S
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STZ ZEROPAGE_6
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ADC ZEROPAGE_6
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ROR ZEROPAGE_6
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ADC [ZEROPAGE_6]
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PLA
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ADC #$66
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ROR
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RTL
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JMP (datablockabs)
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ADC datablockabs
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ROR datablockabs
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ADC @datablockabs+@$FF0000
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JMP row7
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row7 BVS row7_target
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ADC (ZEROPAGE_7),Y
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row7_target ADC (ZEROPAGE_7)
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ADC (ZEROPAGE_7,S),Y
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STZ ZEROPAGE_7,X
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ADC ZEROPAGE_7,X
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ROR ZEROPAGE_7,X
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ADC [ZEROPAGE_7],Y
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SEI
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ADC datablockabs,Y
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PLY
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TDC
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JMP (datablockabs,X)
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ADC datablockabs,X
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ROR datablockabs,X
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ADC @datablockabs+@$FF0000,X
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JMP row8
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row8 BRA row8_target
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STA (ZEROPAGE_8,X)
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row8_target BRL datablockabs
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STA ZEROPAGE_8,S
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STY ZEROPAGE_8
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STA ZEROPAGE_8
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STX ZEROPAGE_8
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STA [ZEROPAGE_8]
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DEY
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BIT #$88
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TXA
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PHB
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STY datablockabs
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STA datablockabs
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STX datablockabs
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STA @datablockabs+@$FF0000
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JMP row9
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row9 BCC row9_target
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STA (ZEROPAGE_9),Y
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row9_target STA (ZEROPAGE_9)
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STA (ZEROPAGE_9,S),Y
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STY ZEROPAGE_9,X
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STA ZEROPAGE_9,X
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STX ZEROPAGE_9,Y
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STA [ZEROPAGE_9],Y
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TYA
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STA datablockabs,Y
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TXS
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TXY
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STA datablockabs,X
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STZ datablockabs,X
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STA @datablockabs+@$FF0000,X
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JMP rowa
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rowa LDY #$AA
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LDA (ZEROPAGE_A,X)
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LDX #$AA
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LDA ZEROPAGE_A,S
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LDY ZEROPAGE_A
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LDA ZEROPAGE_A
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LDX ZEROPAGE_A
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LDA [ZEROPAGE_A]
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TAY
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LDA #$AA
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TAX
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PLB
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LDY datablockabs
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LDA datablockabs
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LDX datablockabs
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LDA @datablockabs+@$FF0000
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JMP rowb
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rowb BCS rowb_target
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LDA (ZEROPAGE_B),Y
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rowb_target LDA (ZEROPAGE_B)
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LDA (ZEROPAGE_B,S),Y
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LDY ZEROPAGE_B,X
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LDA ZEROPAGE_B,X
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LDX ZEROPAGE_B,Y
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LDA [ZEROPAGE_B],Y
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CLV
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LDA datablockabs,Y
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TSX
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TYX
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LDY datablockabs,X
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LDA datablockabs,X
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LDX datablockabs,Y
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LDA @datablockabs+@$FF0000,X
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JMP rowc
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rowc CPY #$CC
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CMP (ZEROPAGE_C,X)
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REP #$CC
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CMP ZEROPAGE_C,S
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CPY ZEROPAGE_C
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CMP ZEROPAGE_C
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DEC ZEROPAGE_C
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CMP [ZEROPAGE_C]
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INY
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CMP #$CC
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DEX
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WAI
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CPY datablockabs
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CMP datablockabs
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DEC datablockabs
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CMP @datablockabs+@$FF0000
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JMP rowd
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rowd BNE rowd_target
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CMP (ZEROPAGE_D),Y
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rowd_target CMP (ZEROPAGE_D)
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CMP (ZEROPAGE_D,S),Y
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PEI (ZEROPAGE_D)
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CMP ZEROPAGE_D,X
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DEC ZEROPAGE_D,X
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CMP [ZEROPAGE_D],Y
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CLD
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CMP datablockabs,Y
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PHX
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STP
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.byte $DC, $34, $12 ; JML (label)
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CMP datablockabs,X
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DEC datablockabs,X
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CMP @datablockabs+@$FF0000,X
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JMP rowe
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rowe CPX #$EE
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SBC (ZEROPAGE_E,X)
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SEP #$EE
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SBC ZEROPAGE_E,S
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CPX ZEROPAGE_E
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SBC ZEROPAGE_E
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INC ZEROPAGE_E
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SBC [ZEROPAGE_E]
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INX
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SBC #$EE
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NOP
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XBA
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CPX datablockabs
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SBC datablockabs
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INC datablockabs
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SBC @datablockabs+@$FF0000
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JMP rowf
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rowf BEQ rowf_target
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SBC (ZEROPAGE_F),Y
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rowf_target SBC (ZEROPAGE_F)
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SBC (ZEROPAGE_F,S),Y
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PEA $1000
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SBC ZEROPAGE_F,X
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INC ZEROPAGE_F,X
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SBC [ZEROPAGE_F],Y
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SED
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SBC datablockabs,Y
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PLX
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XCE
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JSR (datablockabs,X)
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SBC datablockabs,X
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INC datablockabs,X
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SBC @datablockabs+@$FF0000,X
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JMP end
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end RTS
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datablockabs .word $1234
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farcode RTI
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