; --------------------------------------------------------------------------- ; tapeio.s ; ; for Sym-1 ; ; Wayne Parham ; ; wayne@parhamdata.com ; --------------------------------------------------------------------------- .include "sym1.inc" .import popax .export _loadt, _dumpt .segment "CODE" .proc _loadt: near ; --------------------------------------------------------------------------- sta P1L ; Tape record ID to P1L ldx #$00 stx P1H ldy #$80 jsr LOADT ; Read data from tape bcs error lda #$00 ldx #$00 ; Return 0000 if successful jmp done error: ldx #$00 lda #$FF ; or 00FF if not done: rts ; --------------------------------------------------------------------------- .endproc .proc _dumpt: near ; --------------------------------------------------------------------------- sta P3L ; End address stx P3H jsr popax sta P2L ; Start address stx P2H jsr popax sta P1L ; Tape Record ID ldx #$00 stx P1H ldy #$80 jsr DUMPT ; Write data to tape bcs error lda #$00 ldx #$00 ; Return 0000 if successful jmp done error: ldx #$00 lda #$FF ; or 00FF if not done: rts ; --------------------------------------------------------------------------- .endproc