#![no_std] #![no_main] #![feature(isa_attribute)] use gba::prelude::*; #[panic_handler] fn panic_handler(_: &core::panic::PanicInfo) -> ! { loop {} } #[instruction_set(arm::a32)] fn make_3rd_bg_pal_entry_black() { BG_PALETTE.index(3).write(Color::new()); } #[no_mangle] extern "C" fn main() -> ! { make_3rd_bg_pal_entry_black(); loop {} }