Search found 142 matches

by bluearcus
Wed Dec 01, 2021 9:19 pm
Forum: Dragon Hardware
Topic: Dragon 64 internal DS1315 RTC board
Replies: 10
Views: 8778

Re: Dragon 64 internal DS1315 RTC board

Cheers Stew, it was brute force (and ignorance) mostly :lol:
by bluearcus
Wed Dec 01, 2021 8:14 pm
Forum: Dragon Hardware
Topic: Dragon 64 internal DS1315 RTC board
Replies: 10
Views: 8778

Dragon 64 internal DS1315 RTC board

Hi all, Documentation dump on the Real Time Clock stuff I had at the Dragon meet. OS9pretty-small.jpg The attached zip file contains: * An overview RTC.pdf document * KiCad schematic pdf and a board gerbers zipfile * The DS1315 data sheet * Assembly language source for the RTC.BIN get/set routines (...
by bluearcus
Mon Nov 29, 2021 7:09 pm
Forum: Dragon General
Topic: OS9 tools for the CoCoSDC
Replies: 3
Views: 5433

OS9 tools for the CoCoSDC

Hi all, After some grumbling about the CoCoSDC not being very usable under OS9 on the Dragon... here are a set of tools to make it easy to do the usual things you might want to do - Show details of or change mounted images, show or change the current working directory, show a directory listing etc. ...
by bluearcus
Sun Nov 21, 2021 6:03 pm
Forum: Dragon General
Topic: Dragon Meetup - it's not long now!
Replies: 11
Views: 15004

Re: Dragon Meetup - it's not long now!

I'll be there, should be around Friday night too if people want to meet for drinks etc. anything anyone wants me to bring? Cheers. Phill. Can you bring your ICE-6809? And maybe the programming cable for the FPGA? I haven't built my carrier board yet, but it would be good to see the thing working an...
by bluearcus
Fri Oct 29, 2021 7:28 pm
Forum: Software Requests
Topic: Unknown Dragon Star Trek Game.
Replies: 9
Views: 11728

Re: Unknown Dragon Star Trek Game.

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?
by bluearcus
Tue Sep 21, 2021 5:17 pm
Forum: Dragon Hardware
Topic: Dragon 32 RGB SECAM and video tests
Replies: 36
Views: 31276

Re: Dragon 32 RGB SECAM and video tests

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...
by bluearcus
Thu Sep 02, 2021 12:59 pm
Forum: Dragon General
Topic: Dragon Meetup 2021 - November 27th/28th
Replies: 5
Views: 6871

Re: Dragon Meetup 2021 - November 27th/28th

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 ...
by bluearcus
Thu Jun 24, 2021 2:10 pm
Forum: Dragon Hardware
Topic: 6809/6809E compatibility
Replies: 9
Views: 9471

Re: 6809/6809E compatibility

Where did you source the CPU? Those Chinese sellers are not shy of relabeling...
by bluearcus
Thu Jun 17, 2021 5:48 pm
Forum: Dragon General
Topic: Project 2
Replies: 56
Views: 74767

Re: Project 2

Sounds awesome, please yeah, post updates on here as well as discord!
by bluearcus
Mon Jun 14, 2021 1:52 pm
Forum: Dragon General
Topic: DRAM data retention time
Replies: 20
Views: 40062

Re: Anything OS9 level 1 data retention time

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!