https://github.com/akkartik/mu/blob/main/ex1.subx

     1 # The simplest possible program: just an infinite loop.
     2 # All is well if your computer clears screen and hangs without restarting.
     3 # On an emulator the window may get bigger to accomodate the higher-resolution
     4 # graphics mode.
     5 #
     6 # To build a disk image:
     7 #   ./translate_subx boot.subx ex1.subx   # emits disk.img
     8 # To run:
     9 #   qemu-system-i386 disk.img
    10 # Or:
    11 #   bochs -f bochsrc                      # bochsrc loads disk.img
    12
    13 == code
    14
    15 Entry:
    16   {
    17     eb/jump loop/disp8
    18   }
    19
    20 # vim:ft=subx