My4th Light – Custom 8-Bit Forth CPU

by fallat • 2 years ago

97 9 2 years ago

fallat3• 2 years ago

Extremely inspired by Forth, when I discovered this custom CPU design specifically for Forth I couldnt hold myself and went on the expedition to purchase the parts to build one. Unfortunately it only made sense to build 5 and sell 4 to cover costs.

I have 3 remaining My4th Lights I'm looking to sell, and given how niche this space is, I figured I'd try here on the business-tech focused YCombinator. I've sold one to a very happy customer.

I finally got the time to write up a proper little sales page:

http://len.falken.directory/my4th-light/

neocron• 2 years ago

What a great project! I hope stuff like this is still around when I retire, because right now it would just collect dust and make my heart heavy because I don't have the time to pursue such a hobby

fallat3• 2 years ago

If it's any peace of mind, the parts to build them should be available pretty much forever. It's possible I do more runs in the future :) Just for the sake of growing the Forth hardware community!

eihli• 2 years ago

You now have 2̶ 1 remaining My4th Lights.

Y_Y• 2 years ago

Where are the benchmarks? How many far cries can it run simultaneously? Does it make you cooler than Ben Eater?

(Also could you compare it to Chuck Moore's GA144 (core)?)

fallat3• 2 years ago

The manual has a nice benchmark: "5200 additions per second" B)

Probably 0.0001 Far-crys. My best guess!

Ben Eater? What're they eating? :D

Chuck Moore's GA144 requires a fabrication factory to create. My4th doesn't! How's that for a comparison?

Brian_K_White• 2 years ago

I love this. "Do we really need TWO hc161's, so gross and wasteful..." I ridiculously approve.

My4th Light – Custom 8-Bit Forth CPU

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