[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Screen Holes (was: Prodos Woes)

To copy a 40-column text screen from $6000 without touching
the screen holes:

     LDX #$F8
L1   LDA $6000-1,X
     STA $0400-1,X
     LDA $6100-1,X
     STA $0500-1,X
     LDA $6200-1,X
     STA $0600-1,X
     LDA $6300-1,X
     STA $0700-1,X
     DEX
     BEQ L3
     CPX #$80
     BNE L2
     LDX #$78
L2   CPX #$FF
     BNE L1
L3   RTS

--
Paul
Monroe, Michigan USA