68hc11 port A and C setting HELP!!!!!

desmondlai · Oct 15, 2009

how to set all PORT A & PORT C into all OUTPUT.....
in asm form
i dont want C code.....

Noggin · Oct 15, 2009

Nigel has some good tutorials for the PIC in assembly at WinPicProg Page

<-- that one should help you figure out what you need to know

Papabravo · Oct 15, 2009

desmondlai said:
how to set all PORT A & PORT C into all OUTPUT.....
in asm form
i dont want C code.....

Something like

Code:

    ldaa  #0FFh  ; All ones to accumulator A
    staa  DDRA   ; All PORTA bits are outputs
    staa  DDRC   ; All PORTC bits are outputs