mirror of
https://github.com/cc65/cc65.git
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260 lines
3.2 KiB
PHP
260 lines
3.2 KiB
PHP
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;GEOS macros
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;reassembled for 6502TASM/MMS by Maciej 'YTM/Elysium' Witkowiak
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;4-2-99
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;28-6-99 - ca65 port
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;macro 'sub' renamed to 'ssub' due to 65816 mnemonics
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.macro LoadB dest, value
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lda #value
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sta dest
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.endmacro
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.macro LoadW dest, value
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LoadB dest+1, >value
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LoadB dest+0, <value
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.endmacro
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.macro MoveB source, dest
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lda source
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sta dest
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.endmacro
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.macro MoveW source, dest
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MoveB source+1, dest+1
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MoveB source+0, dest+0
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.endmacro
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.macro add source
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clc
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adc source
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.endmacro
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.macro AddB source, dest
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lda source
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add dest
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sta dest
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.endmacro
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.macro AddW source, dest
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AddB source+0, dest+0
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lda source+1
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adc dest+1
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sta dest+1
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.endmacro
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.macro AddVB value, dest
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lda dest
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clc
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adc #value
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sta dest
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.endmacro
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.macro AddVW value, dest
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.local Skip
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clc
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lda #<value
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adc dest+0
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sta dest+0
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.if (>value)=0
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bcc Skip
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inc dest+1
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.else
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lda #>value
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adc dest+1
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sta dest+1
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.endif
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Skip:
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.endmacro
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.macro ssub source
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sec
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sbc source
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.endmacro
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.macro SubB source, dest
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lda dest
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ssub source
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sta dest
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.endmacro
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.macro SubW source, dest
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SubB source+0, dest+0
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lda dest+1
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sbc source+1
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sta dest+1
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.endmacro
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.macro SubVW value, dest
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sec
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lda dest+0
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sbc #<value
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sta dest+0
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lda dest+1
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sbc #>value
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sta dest+1
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.endmacro
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.macro CmpB source, dest
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lda source
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cmp dest
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.endmacro
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.macro CmpBI source, immed
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lda source
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cmp #immed
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.endmacro
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.macro CmpW source, dest
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.local Skip
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CmpB source+1, dest+1
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bne Skip
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CmpB source+0, dest+0
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Skip:
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.endmacro
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.macro CmpWI source, immed
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.local Skip
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CmpBI source+1, >immed
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bne Skip
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CmpBI source+0, <immed
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Skip:
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.endmacro
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.macro PushB source
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lda source
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pha
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.endmacro
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.macro PushW source
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PushB source+1
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PushB source+0
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.endmacro
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.macro PopB dest
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pla
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sta dest
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.endmacro
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.macro PopW dest
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PopB dest+0
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PopB dest+1
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.endmacro
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.macro bra addr
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clv
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bvc addr
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.endmacro
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.macro smb bitNumber, dest
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pha
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lda #(1 << bitNumber)
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ora dest
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sta dest
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pla
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.endmacro
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.macro smbf bitNumber, dest
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lda #(1 << bitNumber)
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ora dest
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sta dest
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.endmacro
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.macro rmb bitNumber, dest
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pha
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lda #(1 << bitNumber) ^ $ff
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ora dest
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sta dest
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pla
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.endmacro
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.macro rmbf bitNumber, dest
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lda #(1 << bitNumber) ^ $ff
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ora dest
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sta dest
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.endmacro
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.macro bbs bitNumber, source, addr
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.local Skip
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php
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pha
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lda source
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and #(1 << bitNumber)
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beq Skip
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pla
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plp
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bra addr
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Skip: pla
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plp
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.endmacro
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.macro bbsf bitNumber, source, addr
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.if bitNumber=7
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bit source
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bmi addr
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.else
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.if bitNumber=6
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bit source
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bvs addr
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.else
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lda source
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and #(1 << bitNumber)
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bne addr
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.endif
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.endif
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.endmacro
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.macro bbr bitNumber, source, addr
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.local Skip
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php
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pha
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lda source
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and #(1 << bitNumber)
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bne Skip
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pla
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plp
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bra addr
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Skip: pla
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plp
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.endmacro
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.macro bbrf bitNumber, source, addr
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.if bitNumber=7
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bit source
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bpl addr
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.else
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.if bitNumber=6
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bit source
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bvc addr
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.else
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lda source
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and #(1 << bitNumber)
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beq addr
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.endif
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.endif
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.endmacro
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;03.03.99 by Maciej Witkowiak
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.macro addv value
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clc
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adc #value
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.endmacro
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.macro subv value
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sec
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sbc #value
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.endmacro
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.macro bnex addr
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txa
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bne addr
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.endmacro
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.macro beqx addr
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txa
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beq addr
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.endmacro
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