As I hit a milestone this week, I thought it would be an appropriate time to share my little Oric project: Working title «CUmini» - my take on emulated storage expansion for the Orics. When I stumbled into the Oric universe laste last year while helpin …

Here's a cute little device/board put out by Cybernetic Micro Systems from 1983. If picked up a few years ago for super cheap that I think kind of cool. It measures around 6" x 4", has itty bitty address leds, a prototyping area where someone has …

I'm thinking about prototyping a war game on an hex grid. However I can't imagine how to design the characters to fill up the screen with hexes. The issue is that some characters would need to be split diagonally in two different colors that depend on the …

Hello Readers! I recommend reading my last post before you read this one. Still Taking the advice I've gotten my previous post, I've made this schematic! Here are the new additions: The Data Bus has Bus Transceivers for I/O (IOD0-7) and Memory (MD0-7 …

In case anyone is interested, I have some spare prototyping PCBs for a Z80 CTC and combined DART board that I have been working on.As I have to buy 10 at a time, I have some going spare, but sorry UK postage only.[size... …

WARNING: Lots of text and images​Hello. In my last post about my 80188 Computer project, called the SeaOtter Essentials Prototyping computer I talked about details of the computer itself. However, I wasn't happy about the Layout of all of the compone …

In case anyone is interested, I have some spare prototyping PCBs for a Z80 CTC that I have been working on.As I have to buy 10 at a time, I have some going spare, but sorry UK postage only.These PCBs are part of a family of boards I have been creating and …

WARNING: lots of text and images!!!​Specs: CPU: Intel 80188 RAM: 640k SRAM ROM: W27C512-45Z 64K EPROM VDP: TMS9918A VRAM: 16k SRAM Keyboard Controller: Intel 8279 Schematic: all PCB layers (No GND planes) All PLB layers (with GND planes): PCB …

In case anyone is interested, I have some spare prototyping PCBs for a Z80 DART that I have been working on.As I have to buy 10 at a time, I have some spare, but sorry UK postage only.These PCBs are part of a family of boards I have been creating and they …

After some work, I've created this schematic: System Specs: CPU: Intel 80c188 RAM: 640k SRAM VDP: TMS9918ANL w/ 16k SRAM Hack Keyboard Controller: Intel 8279 Here's a List of my concerns about this schematic and some things I didn't quite understand: t …

I just wanted to share a hardware project success. Lately it feels like I'm blowing things up rather than fixing or building, so this was a boost.Anyways, in various wanderings, I ran across COMAL information. I never used it back in those days, but it tr …

In my last post, you guys helped me to create a schematic that represents how an 80188 should interface and connect to a TMS9918A VDP. For the last main component of this prototyping project, I need a Keyboard Controller. As I stated before, I'm not going …

You may recall a recent post here at the Junkyard in which I was somewhat apathetic towards Cosmic Smash, the painfully stylish retro-futuristic squash-cum-Breakout NAOMI port that graced the Dreamcast during its final days as a living, breathing platform. …