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Early data sheets listed BRK as one byte, but RTI after a BRK skips the following byte, effectively making BRK a 2-byte instruction. Sometimes, such as when diassembling Apple /// SOS code, it's handy to treat it that way explicitly. This change makes two-byte BRKs optional, controlled by a checkbox in the project settings. In the system definitions it defaults to true for Apple ///, false for all others. ACME doesn't allow BRK to have an arg, and cc65 only allows it for 65816 code (?), so it's emitted as a hex blob for those assemblers. Anyone wishing to target those assemblers should stick to 1-byte mode. Extension scripts have to switch between formatting one byte of inline data and formatting an instruction with a one-byte operand. A helper function has been added to the plugin Util class. To get some regression test coverage, 2022-extension-scripts has been configured to use two-byte BRK. Also, added/corrected some SOS constants. See also issue #44.
77 lines
1.6 KiB
ArmAsm
77 lines
1.6 KiB
ArmAsm
PrintInlineL1String equ $011000
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PrintInlineL2String equ $012000
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PrintInlineDciString equ $013000
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org $1000
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clc
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xce
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sep #$30
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jsr PrintInline8String
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asc '01234567'
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jsr PrintInlineRev8String
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rev '01234567'
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jsr PrintInlineNullString
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asc 'null-term string',00
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jsl PrintInlineL1String
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str 'string with length/1'
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jsl PrintInlineL2String
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strl 'string with length/2'
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jsl PrintInlineDciString
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dci 'DCI string'
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jsr L10AB
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jsr L110F
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jsr L1108
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brk $01
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dw data01
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brk $02
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dw data02
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rts
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PrintInline8String rts
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PrintInlineRev8String rts
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PrintInlineNullString rts
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data01 dw 4386
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ddb $3344
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adrl $88776655
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dfb $99,$88,$77,$66
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dfb 'f'
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dfb "F"
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dfb $40
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dfb $c1
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dfb $42
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dfb $c3
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dfb $44
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dfb $c5
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dfb $46
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dfb $c7
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adr PrintInlineL2String
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dw data02
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dfb $80
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data02 dw data03
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dfb $80
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data03 asc "AllEight"
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L10AB jsr PrintInlineNullString
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per $8023
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rtl
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dfb $65
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dfb $6e
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dfb $20
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dfb $01
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org $1100
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asc 'string'
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dfb $00
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dfb $60
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L1108 jsl PrintInlineL2String
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asl A
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brk $60
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L110F jsr PrintInlineNullString
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adc $6e
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dfb $64
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