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https://github.com/fadden/6502bench.git
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b43fd07688
My original goal was to add a sign-extended decimal format, but that turned out to be awkward. It works for data items and instructions with immediate operands (e.g. "LDA #-1"), but is either wrong or useless for address operands, since most assemblers treat integers as 32-bit values. (LDA -1 is not LDA $FFFF, it's LDA $FFFFFFFF, which is not useful unless your asm is doing an implicit mod.) There's also a bit of variability in how assemblers treat negative values, so I'm shelving the idea for now. I'm keeping the updated tests, which are now split into 6502 / 65816 parts. Also, updated the formatter to output all decimal values as unsigned. Most assemblers were fine with negative values, but 64tass .dword insists on positive. Rather than make the opcode conditional on the value's range, we now just always output unsigned decimal, which all current assemblers accept.
88 lines
2.0 KiB
ArmAsm
88 lines
2.0 KiB
ArmAsm
;Project file was edited to force ASCII formatting for some operands.
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.setcpu "6502"
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; .segment "SEG000"
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.org $1000
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lda $01
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lda $0102
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lda $fe
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lda $feff
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lda 1
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lda 258
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lda 254
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lda 65279
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lda 1
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lda 258
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lda 254
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lda 65279
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lda %00000001
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lda %0000000100000010
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lda %11111110
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lda %1111111011111111
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jmp skipdata
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.byte $01
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.word $0201
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.faraddr $030201
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.dword $04030201
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.byte 1
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.word 513
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.faraddr 197121
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.dword 67305985
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.byte 1
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.word 513
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.faraddr 197121
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.dword 67305985
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.byte %00000001
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.word %0000001000000001
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.faraddr %000000110000001000000001
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.dword %00000100000000110000001000000001
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.byte 255
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.word 65279
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.faraddr 16645887
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.dword 4244504319
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skipdata: lda #'h'
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lda 'h'
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lda a:'h'
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lda #$1f
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lda #' '
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lda #'"'
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lda #$27
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lda #'~'
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lda #$7f
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lda #$80
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lda #$9f
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lda #' ' | $80
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lda #'"' | $80
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lda #$a7
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lda #'~' | $80
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lda #$ff
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jmp L10A4
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more_ascii: .byte 'h'
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.byte $80
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.word $6868
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.byte $80
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.word skipdata
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.faraddr skipdata
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.dbyt skipdata
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.byte <more_ascii
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.byte >more_ascii
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.word more_ascii
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.faraddr more_ascii
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.dword more_ascii
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.dbyt more_ascii
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.byte '['
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.byte '{'
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.byte '|'
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.byte '}'
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.byte ','
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.byte '[' | $80
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.byte '{' | $80
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.byte '|' | $80
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.byte '}' | $80
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.byte ',' | $80
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L10A4: rts
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