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Testing ALU

A project log for TTL 8-Bit CPU better than Z80

An 8th grader designing and building a real 8-bit CPU from scratch using custom architecture and discrete logic.

bohan-xuBohan Xu 03/13/2026 at 21:410 Comments

So the ALUI doesn't exactly work. I took the FPGA I was using and put it into a testing circuit. I'm testing it and it doesn't work. Trying to fix it hopefully I will find a solution sometime soon! If you have anything to say please comment! Thanks! Here's a picture:

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