Minimalist Europe Card Bus (MECB) – 1MB ROM Expansion Card (Part 1)
Continuing on, with my Minimalist Europe Card Bus project. Join me as I introduce a 1MB ROM Expansion Card, discuss the design decisions, and assemble my first card. First some …
Minimalist Europe Card Bus (MECB) – Bus Pinout Documented!
It has been pointed out to me, that I had overlooked officially documenting the MECB Bus pinout. So, it’s time this oversight was fixed! I suspect that, originally, I was …
Building a VersaTerm – A Retro Computing Serial Terminal
In the early computing days of the late 1970’s, back when we were building our own 8-bit microprocessor systems, it may be hard to imagine now, but we didn’t actually …
Building a 6502 (and W65C02) NOP Tester
I just received some old MOS 6502 microprocessor chips from AliExpress, for a project that I’m currently working on. Now, I needed a way to test that the received chips …
Minimalist Europe Card Bus (MECB) – Some 6809 BASIC Fun
As I now have a modular retro 6809 computer system, with a flexible memory map, I thought it would be fun to mimic another simple 6809 system and to also …
Annealing your 3D Prints – Potential magic, depending on your model!
After my long journey making my final Ultimate Cherry MX Version of my Hex Keypad, and in fact being very happy with the results I’d achieved, I was still contemplating …
Minimalist Europe Card Bus (MECB) – Let’s push our 6809 speed!
Following my recent 6809 system testing video, a viewer asked if the system could run at 3Mhz, or perhaps even a little higher. Join me as I initially test the …
Minimalist Europe Card Bus (MECB) – 6809 Testing, Coding, Sound!
Having finally assembled an initial 6809 based system, following the completion of my recent Motorola I/O + Sound card, we should now give the system a bit more thorough testing. …
Hexadecimal 4×4 Matrix Keypad – Ultimate Cherry MX Version
In a couple of recent posts / videos, I covered the beginnings of my Hexadecimal Keypad design journey. In these earlier posts, here and here, I presented the history of …
Minimalist Europe Card Bus (MECB) – Motorola I/O Card + Sound
With my first Minimalist Europe Card Bus CPU Card finally completed, to my satisfaction. Next up, is my Motorola based I/O Card, which will finally enable a complete modular 6809 …