C64_SKILLS/examples/assembly/chrout-hello.asm

; chrout-hello.asm
; Generic 6510 assembly. Load at $C000 and run with SYS 49152.
; Uses KERNAL CHROUT at $FFD2. Clobbers A/Y.

        * = $c000

start:  ldy #$00
loop:   lda message,y
        beq done
        jsr $ffd2      ; KERNAL CHROUT
        iny
        bne loop
done:   rts

message:
        .byte 147      ; clear screen PETSCII
        .byte "HELLO FROM $C000",13,0