The implemented runtime provides a small initialization sequence for an NTSC NROM program. It exposes two source-language commands:
nes.set_background_color sets the universal
NES background palette color;nes.run completes initialization and enters a stable loop.Both commands belong to the top-level main program block. They cannot appear inside conditionals, loops, or procedures because initialization commands must execute in a predictable sequence.
See Target platform for the generated ROM format and hardware initialization behavior.