Intel 4004 emulator on AVR

Attempt at emulating the Intel 4004 system on AVR at the original speed.

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Thinking and planning phase.
I want to emulate Intel 4004 (and possibly 4040 too) CPU with full capacity of ROMs and RAMs. Their I/O pins will be limited by the AVR package. Execution should run at the original speed of about 90 kIPS (740 kHz main clock), or possibly faster. Target candidates are ATmega168 or 328 and higher. Board for demonstration could be Arduino Nano or Micro but it can run on naked chip. Assembly only.

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Dr. Cockroach wrote 11/03/2017 at 11:29 point

Would like to see it with the 328 :-)

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