; "Hello World" in dasm assembler format.

            processor 6502

ddata       equ     $11a0       ; Display data address.
dcommand    equ     $11a1       ; Display command address.

            org     $1200       ; Code start.

            ldx     #0          ; Starting index 0 in X register.
printnext:
            lda     text,x      ; Get character from string.
            beq     done        ; If we read a 0 we're done.
            sta     ddata       ; Output character.
            lda     #$7
            sta     dcommand
            inx                 ; Increment index to next character.
            bne printnext       ; Repeat if index doesn't overflow to 0.
done:
            brk                 ; Just die.

text:
    dc.b    "Hello, world!", $00