Vacuum Tube Computer P.26 – Memory Map and 4-Bits of RAM

Time to build our first proper PCB that will go on the final memory board, and it’s a doozy! Easily the longest board I’ve ever cut and certainly one of the most involved to solder up and test, this board of just 4-bits of RAM was a journey to build. And this is just the beginning, I have 11 more of these to build. But, the real question is, why is it built the way it is? Well, let’s take a deep dive into the memory map, look at how the memory will be laid out, and then finally, let’s give this 4-bits of memory a test! If you want to support the channel please hop over to Patreon:   / usagielectric   Also, we now have some epic shirts for sale! https://my-store-11554688.creator-spr... Come join us on Discord and Twitter! Discord:   / discord   Twitter:   / usagielectric   Intro Music adapted from: Artist: The Runaway Five Title: The Shinra Shuffle https://ocremix.org/remix/OCR01847 Thanks for watching! Chapters 0:00 Intro 0:10 Unexpected ASMR 2:34 The real intro 4:15 The control word 5:23 Using a 6-bit address (with 2 bank bits) 7:00 The memory map 9:13 Actualizing it 13:22 Soldering it up 14:28 Testing all four bits 16:54 Outro 17:54 Bunny!