Welcome Joe. It’s amazing to hear that you worked for Motorola Microsystems. That would have been a dream for me, back in the day.

Having started out with Motorola 8-bit CPU’s, and then spent a lifetime in IT, one thing that became apparent to me is that a lot of the newer generation don’t really ...

Vincent wrote: Mon Oct 12, 2026 8:39 pm (Adding all these details for future reference, in case it helps someone)

Awesome! A great example for anyone getting started with the 68008 CPU Card.

Due to a couple of requests, which brought to my attention an oversight in not bringing out the 6809 / 6309 FIRQ input to the bus (Fast Interrupt Request), I’ve made an addition to the documented MECB Bus Pinout .

Firstly, note that the original pin-out was directly based on a minimalist version of ...

Hi Greg, thanks for your reply !

No worries. Glad I could be of help, and Thank You for alerting me to my blog oversight on the TUTOR Load command use!


Also I notice that after transfering xmasl_oled.s19 and running it with "G 4000" (even without an OLED board)
the sound plays, and after it ...

My setup was at 38400, I lowered it to 9600 but it still fails with timeout...

My apologies. I’ve been buried in the 6809 world for the last few months, so my memory of TUTOR use had become a bit faded. :?

38400 baud works fine.

The main issue is that (in Tera Term), I need to set it's ...

I can't seem to get a file to load successfuly into Tutor using minicom.


Hi. I'm not familiar with minicom. I mostly use Tera Term (Windows platform).

My first thought is to ask what baud rate you are using?

As I recall there is no handshaking in use, and I do recall making a "future project ...

Hi, The new boards should add a lot of otherwise missing flexibility to MECB, I'll be interested to see what you come up with out of all the possibilities existing for both memory and storage options.

Yes, I took a while mulling over how I wanted to approach a Banked Memory solution. I think I ...

I’m just finishing off a Banked Memory Expansion Card design, intended to give the flexibility of a Banked Memory solution for any 8-bit CPU Card.

This will allow any CPU to have a Banked Memory space of up to 3MB, available for implementing larger memory space applications, or, operating systems ...

I’ve added a modern PICO9918 based VDP Display Card, to join my existing TMS9918 / TMS992x and my existing V9938 / V9958 VDP Display Cards.

This new PICO9918 based MECB VDP Display Card delivers the MECB solution for ensuring that we have a VDP compatible Display Card for the future.

Join me, as I ...

Thanks! That fixed it. I'm going to spend a couple of days playing with KiCad then send off a test board. I'm very comfortable with EasyEDA, but I want to make sure I can create a single board through production before I go wild with designs - and there'll be a bunch.

Awesome! Thanks for the ...