> 512 instructions seems quite possible for that - compare to 'boot sector games' which run in about one third of the space. Except a (boot) sector is 512 byte

> 512 instructions seems quite possible for that - compare to 'boot sector games' which run in about one third of the space. Except a (boot) sector is 512 bytes (assuming x86)? Technically 510 because of the two bytes to indicate that it’s bootable, but that’s quite a bit more than 1/3 of 512.