.subttl 'wd1770.src' .page wdtest .macro .ife <*!.$03 ; lower two bits cannot be zero nop ; fill address error .endif .endm nodrrd .macro ; read nodrv,x absolute .byte $bd,$ff,$00 .endm nodrwr .macro ; write nodrv,x absolute .byte $9d,$ff,$00 .endm
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