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ATSMALL
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ATSMALL is an esoteric MCU by User:FluixMakesEsolangs, the official emulator is made in Python. Each program is 1 bit wide with a 1-bit instruction, leading to pointless programs. This MCU was created because the ATtiny isn't small enough.
How the ISA Works
Each instruction is 1 bit. 0 - Set Pin 1 to HIGH 1 - Set Pin 2 to HIGH
Examples
Set Pin 1 to HIGH
0
Set Pin 2 to HIGH
1
Implementations
Emulator:
prog = int(input()) pinA = not prog pinB = prog