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Hi, I have one of these, and though fascinating in itself (I wanted the board because of the motherboard layout - I didn't realise beforehand that these were the SECAM machines), the RGB output simply was not as good as I expected. The main issue I found was the excessive blue on the screen. I have ...

Following on from my post about the pull-up resistor solution (the one which seems to make OS9 loading more reliable - especially with the D+ board), I have now added a descriptive blog to the website: https://www.dragonplus-electronics.co.uk/6809-pull-up-resistors/ . This describes at a high level,...

Some of you will be aware of the issues that have been experienced with the Coco SDC and OS9. It has often meant mounting the VDK in DOSplus and then BANKing across to another DOS prior to BOOTing the image. Finally, the root cause of that has been identified, and I have prototype boards which demon...

At bluearcus' suggestion (well, I think that's him) I have now put together a somewhat neater pull-up solution which would mean that the Oojamaflip would still work with the DMSX2+ and CocoSDC as is without needing additional pull-ups. It's a 6809/6309 adapter with the address and R/W pull-ups incor...

OK - the immediate issue is now solved. Many many thanks go to Pere and Darren Atkinson for their assistance with the random DOS failures issue. The fix has been to add pull-up resistors (4k7) to the address bus and RD/WR. I made the decision to mod the Oojamaflip rather than the DMSX2+, as the Ooja...

It must be my WordPak 2+ cable at fault then.

It may just be my cable. I wouldn't worry too much. But are you sure you get no bars at all? This is with BASI12I.

I can't resist showing off the difference in image quality between the WordPak 2+ and the DMSX2+!!

I think the WP2+ unfortunately suffers from VRAM interference, hence the jail bars.

I can confirm that Pere's streaming programs do work with the CocoSDC and WordPak 2+. So it is obviously something environmental being introduced or exacerbated by the DMSX2+ or more specifically the CPLD.

Thanks guys. I think I understand a bit more now.