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#!/usr/bin/env python3
"""
Basically, iterate all 16-bit numbers,
or rather, 15-bit, to have valid
nandgame instructions, skip reserved bits.
"""
#ENDIANNESS = 'big'
ENDIANNESS = 'little'
with open("allins.bin", "wb") as f:
ins=0x0000
# ldi A, 0
f.write(ins.to_bytes(2, byteorder = ENDIANNESS))
ins=0x00ff
# ldi A, 255
f.write(ins.to_bytes(2, byteorder = ENDIANNESS))
for ins in range(0x8000, 0xffff + 1):
# unused bytes, force 1
if (ins & 0x6800) != 0x6800:
continue
f.write(ins.to_bytes(2, byteorder = ENDIANNESS))
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