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104 lines
2.4 KiB
Plaintext
104 lines
2.4 KiB
Plaintext
;A02 Assembler Test File
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INCLUDE "a02inc.a02"
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start ORG $0400 ;Start of Code
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SUBROUTINE
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flags: CLC
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SEC
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CLI
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SEI
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CLV
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CLD
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.local SED
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SUBROUTINE
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rgstr: DEX
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DEY
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INX
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INY
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TAX
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TAY
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TSX
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TXA
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TXS
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TYA
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SUBROUTINE
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retrn: RTI
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RTS
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SUBROUTINE
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stack: PHA
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PHP
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PHX
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PHY
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PLA
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PLP
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PLX
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PLY
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SUBROUTINE
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other: NOP
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BRK
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SUBROUTINE
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branch: BCC rgstr
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BCS flags
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.loop BEQ retrn
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BNE jump
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BMI .next
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BPL .loop
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BRA branch
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.next BVC +127
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BVS -128
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SUBROUTINE
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jump JMP .next
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JMP (words )
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JMP (pntr,x)
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.next JSR retrn
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SUBROUTINE
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memory: ADC #$98 ;Immediate
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AND TABLE,Y ;Absolute,Y
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CMP PNTR,Y ;Absolute,Y (Zero Page Address)
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EOR (PNTR,X) ;(Indirect,X)
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LDA (PNTR),Y ;(Indirect),Y
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ORA (PNTR) ;(Indirect)
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ASL ;Accumulator
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DEC PNTR ;ZeroPage
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INC PNTR,X ;ZeroPage,X
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LSR BYTES ;Absolute
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ROL BYTES,X ;Absolute,X
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ROR $ABCD,X ;Absolute,X
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CPX #$76 ;Immediate
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CPY PNTR ;ZeroPage
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STY PNTR,X ;ZeroPage,X
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STZ $CDEF ;Absolute
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LDY $CDEF,X ;Absolute,X
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TRB PNTR ;ZeroPage
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TSB $1234 ;Absolute
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SUBROUTINE
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exprsn LDA #PNTR+1 ;Immediate
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LDA PNTR+1 ;ZeroPage
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LDA (PNTR+2) ;Indirect
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LDA (PNTR+4,X) ;(Indirect,X)
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LDA (PNTR+6),Y ;(Indirect),Y
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LDA STRUCT ;Absolute
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LDX #<STRUCT ;LSB Immediate
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LDY #>STRUCT ;MSB Immediate
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LDA STRUCT+1
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LDX #<STRUCT+1
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LDY #>STRUCT+1
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LDA STRUCT+2
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LDX #<(STRUCT+2)
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LDY #>(STRUCT+2)
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BYTES byte 99, %10101010,'~' ;Bytes
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.byte $12,$34
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HEXES hex 01,23,45,67,89 ;Hexadecimal
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.hex ,AB,CD,EF,1A,2B,3C,D4,E5,F6
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WORDS word $3456
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Align 256
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TABLE .word $1357,$9BDF,$2468
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TEXT byte "ABCDEFGHIJKLMNOPQRSTUVWXYZ",0
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END ;Nothing after this will be Assembled
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STY (STRUCT),X ;Illegal Addressing Mode
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DC.W ;Unsupported Pseudo-Op
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