1-bit CPU with 4-bit Address

Submitted by Andrew Wasson on Sat, 05/12/2012 - 9:41pm

This is a Javascript model of the 1-bit CPU described in the article at Hack A Day. It is programmed with an example binary counting program that counts from 0 - 7 and displays the results in the opcode registers 0, 2 and 4 (highlighted in red).

The top bar represents a display showing the current address and instruction. The grid below is a realtime display of the program memory where you can see the processor writing data and jumping according to the current instruction.

Address Opcode Operand A Operand B

More information about the 1-bit processor can be found here.

The next step is to build it with a couple of TTL chips and some RAM.

Homebuilt CPUs WebRing