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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"
def main():
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))
import sys
if __name__ == "__main__":
if len(sys.argv) == 2:
if sys.argv[1] in ["little", "le"]:
endianness = "little"
elif sys.argv[1] in ["big", "be"]:
endianness = "big"
print(f"Use Endianness: {endianness}")
main()
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