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1+1 Does Equal 2 !!!!

A project log for Mega-One-8-One

An Educational Implementation of the Classic 74181 Arithmetic-Logic Unit

Dave's Dev LabDave's Dev Lab 06/25/2017 at 05:042 Comments

Found some time this evening to hook up the Mega-One-8-One for testing. The Mega-One-8-One is a gate level accurate replicate of the classic 74181 Arithmetic-Logic Unit(ALU) for educational purposes. With the exception of one LED not being soldered down properly, everything is working! I ran through a series of tests and everything looks great so far! I tried to make the board layout very similar to the block diagrams that are often distributed with the datasheet for the 74181, but I am noticing that the "hook-up" using this layout is not very easy. I am going to have to think about the connectivity for the next revision.
Feedback is greatly appreciated!

Discussions

Yann Guidon / YGDES wrote 09/18/2017 at 13:18 point

Yeah !

Now create a sort of LFSR to feed it with control signals and make a wall decoration ;-)

Then go full diode-transistor logic ;-)

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Dave's Dev Lab wrote 09/18/2017 at 15:50 point

i'll get right on that! hehe

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