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. …
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 …
Minimalist Europe Card Bus (MECB) – 6809 / 6809E CPU Card – v2.2 Update!
This post follows on from my earlier Minimalist Europe Card Bus posts and videos. The 6809 CPU Card has been a long journey. First v1.0 then v2.0, and now v2.2 …
Minimalist Europe Card Bus (MECB) – 6809 / 6809E CPU Card v2.x
This post / video follows on from my earlier Minimalist Europe Card Bus posts and videos. My original (version 1.x) MC6809 CPU Card required an original internal clock 6809 (or …
Optimising our Retro CPU Reset Design
While considering my next CPU card design, I decided to first take a look at the Reset circuit design. My first MECB CPU card faithfully used the same “old school” …
Minimalist Europe Card Bus (MECB) – MC6809 CPU Card (Part 2 – Testing)
This post follows-on from my previous post, where I presented and assembled my first prototype PCB for a 6809 CPU card, for the MECB bus. The first part concluded following …
Minimalist Europe Card Bus (MECB ) – MC6809 (or HD6309) CPU Card
This post follows on from my earlier Minimalist Europe Card Bus posts and videos. For MECB, to date I’ve designed and built a Backplane, a Prototype card, and a TMS9929A …
Minimalist Europe Card Bus (MECB) – TMS9929A / TMS9928A VDP RGBS Video Card
Earlier, I posted an article and video on my TMS9929A Video Display Processor (VDP) rediscovery. This included designing an alternative Retro VRAM solution, which I then implemented as a breadboard …
More AliExpress Re-Marked Chips – Follow Up! (6809 / 6309 CPUs)
This is a quick Follow-Up to my recent post and video on my AliExpress Re-Marked Chips Frustration! You can find this here: More AliExpress Re-marked Chips Frustration Since then, I …
Minimalist Europe Card Bus (MECB) – Address Decode / Glue Logic ATF16V8
As I mentioned in my earlier MECB posts, I wanted to be able to create MECB boards which implemented addressing flexibility. This is to allow any I/O board design to …