Minimalist Europe Card Bus (MECB) – MOS 6502 or WDC W65C02 CPU Card
After designing my 6809 CPU Card, the next CPU on my wish list was the 6502. Join me, as I walk-through the design, then I assemble and test my first …
Minimalist Europe Card Bus (MECB) – A TMS9928A on the VDP Display Card!
In an earlier post / video, I updated the TMS VDP Display Card to v2.0, adding support for the TMS9918 60Hz Composite Video VDP chip, which was the most common …
Minimalist Europe Card Bus (MECB) – TMS992x or TMS9918 VDP Display Card – v2.0 Update!
Recently, someone mentioned that they were planning on using a TMS9918 VDP chip, with the MECB TMS VDP Display Card. As I live in a PAL 50Hz TV standard country, …
Minimalist Europe Card Bus (MECB) – 6809 or 6309 CPU Card – v2.3 Update!
Recently, while working on my 6502 CPU Card design, I became aware of a small oversight on my existing 6809 CPU Card. Nothing that has caused any issues, as I …
Minimalist Europe Card Bus (MECB) – 1MB ROM Expansion Card (Part 2)
With our 1MB ROM Expansion Card design and assembly already presented in Part 1, it’s now time to test our assembled Card, with an initial use scenario. Initially, I’m going …
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 …