A new quick video with a bit of a status update: I now have a working accumulator register tied to my ALU. (I'm also working on the flags register as well as the 4 8-bit registers B through E introduced in the "Introduction to Digital Computers Part 4" video. This includes video of the ALU... Continue Reading →

One of the boards I designed simply does not work. Worse, it's not a simple error: I can't simply cut one or two lines on the board and run jumpers. Turns out a bunch of resistors were incorrectly wired to power--and cutting them would require so much work it's easier to basically start over again.... Continue Reading →

Why build one when you can build 8, string them together in a primitive card cage and wire wrap the pieces together? This is the accumulator and the ALU together for the first time. I need to build a test circuit and verify the connections before I video tape this part of the work. And... Continue Reading →