The Trump Card is a Zilog Z8000 coprocessor/accelerator card for the IBM PC 5150 and clones, detailed by a Steve Ciarcia article in 1984

DIY Zilog Z8000 computer that runs CP/M-8000 with 1MB flash, 1MB RAM, and a couple serial ports.

In this video, I put together a T5745 thin client with a PCI expansion adapter and a GPIB adapter. Background I’ve started playing with some HP 9000 computers, both the series 200 (9836, 9920, etc) and the series 300 (model 310). With a few exceptions such as the 9836, these computers often don’t include built-in …

I already built a nifty handheld controller, and I should be enjoying my retro gaming experiences, but I couldn’t help building something new, so here is a PS2-to-Atari5200 adapter: Purpose This adapter allows you to use a PS2 controller on an Atari 5200 gaming console. The 5200 was notable at the time for its use …

I always wanted to build a single board “trainer style” computer: Motivation When I was first getting started with electronics, wanted a Heathkit ET-3400 Microproccessor trainer, but could never afford one at the time. Eventually both I and the world moved on, to fancier more capable computers. However, I’ve still always wished I had an …

Tired of buying cartridges for my 5200, I decided to make myself a Multi-ROM Cartridge: Purpose The Atari 5200 is a vintage gaming system from the early 1980s. At the time I owned a 2600, but I always wanted a 5200. Well, in 2018 I finally decided to find one on eBay and buy it. …

In this post, I turn a raspberry pi into a virtual storage device for ISA bus computers: Motivation I’m tired of carrying compact flash cards and/or floppies back and forth to my XT computer. I like to do development at my desk using my modern windows PC. While I can certainly use a KVM switch …

A couple of videos where I take a ~ 1950s Seeburg 3WA wallbox and convert it into a media player for my homebuilt audio player: Motivation I saw a blog post where someone else converted a Seeburg wallbox, and it set me on my own journey. A bit of background. These Wallboxes were used as …