; =============================================================
; hello-world.asm — Minimal C64 Assembly Hello World
; Assemble to $C000 (49152)
; Run with: POKE 56,192:CLR  then  SYS 49152
; =============================================================

        * = $C000           ; Assemble starting at $C000

; ---------------------------------------------------------------
; Main entry point
; ---------------------------------------------------------------
START   JSR $FF81           ; CINT — Initialize screen editor

        ; Print message using BSOUT (Kernal output routine)
        LDX #0              ; X = index into message
LOOP    LDA MSG,X           ; load character
        BEQ DONE            ; zero byte = end of message
        JSR $FFD2           ; BSOUT — output character to screen
        INX                 ; next character
        BNE LOOP            ; (X wraps at 256, but our msg is short)

DONE    RTS                 ; return to BASIC

; ---------------------------------------------------------------
; Message data (PETSCII)
; $0D = carriage return, $00 = end of string
; ---------------------------------------------------------------
MSG     .BYTE 147           ; clear screen (CHR$(147))
        .TEXT "HELLO, WORLD!"
        .BYTE $0D,$00       ; CR + terminator