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This looks massively like a type-in Star Trek game I spent a lot of time with too, though I'm not sure if I still have a copy. Will check my basic program disks.

Update: Sadly no joy. Have tried to recall what magazine it might have been from. I would guess Your Computer or PCN?

Hi retrocant and everyone else here... Interesting board idea and documentation of the original SECAM RGB stuff. I've a question though... How does the original SECAM board circuit get its luminance signal? It can't be direct from the 6847 as there wouldn't be properly formed 'extra PAL' lines? A bo...

If people can do Lateral Flow Tests before attending that would be helpful. Yes... they are more than a bit flawed in terms of sensitivity (about 1/3 for asymptomatic individuals) but it's still a bit better than nothing. A friend held an event where LFT's were required for attendance, and they put ...

Where did you source the CPU? Those Chinese sellers are not shy of relabeling...

Sounds awesome, please yeah, post updates on here as well as discord!

Oh, looks like I made a bit of an assumption there.

Just because a list of modules exists, doesn't mean that list corresponds to the contents of any available archive. Ah well, back to thinking about the stub mechanism!

Oh, that's unfortunate. Was fooled by the schematic which looks to suggest some spare capacity! Anyway a zip of the Delphi OS9 archives containing a 'drivepak' of those OS9 6809 system modules is on the Coco archive for download. So looks like I'll be downloading that and trying to figure out how to...

I've gone old school with my upgrade: It's based on a design for the CoCo from the 80's that provides the extra address line required to drive 256K DRAMs fitted to the Dragon main board. The memory is banked in 32K pages, limiting your options as far as operating systems go, but still useful e.g. R...

The penny has just dropped... and I now understand a comment Pere made a long time ago in this thread... https://archive.worldofdragon.org/phpBB3/viewtopic.php?p=13766#p13766 To do the sector read/write data ready synchronisation, the CoCo uses HALT, which is not demultiplexed at all by the MPI, whe...

The !SCS/!P2 and !CTS/!R2 plus !CART signals are controlled by the lower and upper and nibbles respectively of the multipak control register, so it's possible to swap in the physical disk controller but keep the SDC ROM bank the same... From Ed's Mega Mini MPI design notes... The upper four bits of ...