10 BLOAD"PROGRAM.BIN",R

autoexec.bas

10 BLOAD"PROGRAM.BIN",R

options.json

{"asm":{"filename":"program.bin","build":"bin"},"basic":{}}

program.asm

; bios call to print a character on screen
CHPUT:      equ 0x00a2

            ; the address of our program
            org 0xD000

start:
            ld hl, message
mainLoop:   ld a, (hl)
            cp 0
            ret z
            call CHPUT
            inc hl
            jr mainLoop

message:
            db "Hello world!",0

            ; use the label "start" as the entry point
            end start