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dfd5bcab1b
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.
87 lines
1.9 KiB
ArmAsm
87 lines
1.9 KiB
ArmAsm
.cpu "65816"
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.enc sg_hiascii
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.cdef $20,$7e,$a0
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.enc sg_ascii
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.cdef $20,$7e,$20
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PrintInlineL1String = $011000
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PrintInlineL2String = $012000
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PrintInlineDciString = $013000
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* = $1000
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.as
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.xs
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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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.text "01234567"
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jsr PrintInlineRev8String
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.text "76543210"
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jsr PrintInlineNullString
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.null "null-term string"
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jsl PrintInlineL1String
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.ptext "string with length/1"
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jsl PrintInlineL2String
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.text $14,$00,"string with length/2"
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jsl PrintInlineDciString
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.shift "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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.word data01
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brk #$02
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.word 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 .word 4386
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.byte $33,$44
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.dword $88776655
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.byte $99,$88,$77,$66
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.byte 'f'
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.byte 'F' | $80
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.byte $40
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.byte $c1
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.byte $42
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.byte $c3
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.byte $44
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.byte $c5
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.byte $46
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.byte $c7
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.long PrintInlineL2String
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.word data02
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.byte $80
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data02 .word data03
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.byte $80
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.enc sg_hiascii
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data03 .text "AllEight"
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L10AB jsr PrintInlineNullString
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per $8023
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rtl
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.byte $65
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.byte $6e
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.byte $20
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.byte $01
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.logical $1100
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.enc sg_ascii
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.text "string"
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.byte $00
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.byte $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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.byte $64
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.here
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