Nibbler construction is underway! I’m building the CPU on a 5 x 4 inch perfboard, and connecting the components using wire wrap. This particular perfboard is a Twin Industries 8200 Series, which has continuous metal planes on both sides that…
An old project of mine may return from the dead. A few years ago, I started an ambitious project to build a 3D graphics processor using an FPGA. The goal was to create a simple version of the GPU you…
I’ve made a few refinements to the Nibbler design, and now I’m ready to start building the CPU! After looking at what seemed like a million different possible changes and additions, I’ve decided to keep the hardware exactly as…
The 1970s were a great time to be a geeky kid, thanks to the introduction of the first digital electronic toys. With their beeping songs and blinking lights, who could resist them? Recently I decided to take a trip down…
It’s programming time! To verify that Nibbler’s design and instruction set are powerful enough to handle a real program, I sat down to write a simple “guess the number” game. And… (drumroll) it works! I ran the program on…
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