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Guess which ALU concept I'll go with

A project log for Gigatron TTL microcomputer

Just because! A home computer without microprocessor

Marcel van KervinckMarcel van Kervinck 04/07/2017 at 14:190 Comments

First some perspective:

Yes, the ALU will be made out of multiplexers! (74LS153)

The 74LS155 that is to become a 3-to-8 opcode decoder, the bottom half of the diode ROM matrix and the inverter/buffer row (74LS04). You can see XOR, OR, AND and LOAD programmed here.

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