Search found 142 matches

by bluearcus
Wed Nov 15, 2023 1:30 pm
Forum: Dragon General
Topic: The CoCo Discord server
Replies: 3
Views: 24703

The CoCo Discord server

Quite a lot of people these days are less than enamoured with Facebook, and with much day-to-day Dragon discussion going on on the Facebook Dragon users group, that can leave people 'out of the loop'. An alternative forum for real-time discussion with sensible sub-sections and a good community of kn...
by bluearcus
Sat Oct 14, 2023 6:53 pm
Forum: Uploads
Topic: Broomsoft WIMP manual
Replies: 3
Views: 9804

Broomsoft WIMP manual

Thanks to Ciaran for bringing this along to the meet up last weekend.
by bluearcus
Thu Sep 28, 2023 5:42 pm
Forum: Uploads
Topic: Home Computer Museum Helmond Dragon 64 archived disks
Replies: 2
Views: 10072

Re: Home Computer Museum Helmond Dragon 64 archived disks

And the Dragon 64 also had a 'mystery mod'. A twisted pair emerging from a little hole next to the cartridge port, going to a female header plug... I didn't get in to opening hardware, so what this little 'switch, if you plug one in' was doing is a mystery. One for next time.
by bluearcus
Tue Sep 26, 2023 7:44 pm
Forum: Uploads
Topic: Home Computer Museum Helmond Dragon 64 archived disks
Replies: 2
Views: 10072

Re: Home Computer Museum Helmond Dragon 64 archived disks

A little blurb to accompany this archive. Very interesting set of disks... the Dragon 64 in question was obviously heavily used under DragonDOS, OS9 and Flex for document preparation, graphics and entertainment. The twin DragonData disk drive unit had two replacement 80 track double sided drives fit...
by bluearcus
Tue Sep 26, 2023 7:26 pm
Forum: Uploads
Topic: Home Computer Museum Helmond Dragon 64 archived disks
Replies: 2
Views: 10072

Home Computer Museum Helmond Dragon 64 archived disks

Results of a day and a bit of archiving of the most interesting of the large number of Dragon 64 floppy disks in the Museum's collection.

Thanks to Bart van den Akker for the opportunity to capture these! A visit to the Museum is very much recommended if you get the chance.
by bluearcus
Tue Sep 26, 2023 1:34 pm
Forum: Uploads
Topic: OS9 User Group Disks
Replies: 2
Views: 12337

Re: OS9 User Group Disks

Nice! Will have some fun looking through those.

Though VDK, argh... The toolshed package os9 utility which allows exploring, extracting files, changing RBF disk images from windows or linux only likes headerless! So headerless .DSK, or .IMG or .OS9 is much more convenient!
by bluearcus
Tue Jun 06, 2023 12:06 pm
Forum: Dragon General
Topic: Wessex Wyvern expansion box?
Replies: 4
Views: 7297

Re: Wessex Wyvern expansion box?

More interesting is that EliteCalc works on the Dragon! That's a CoCo cartridge I thought?

Actually no - scratch that. It seems that Microcare 'Elite Calc' did have a Cartridge version.
by bluearcus
Mon Jun 05, 2023 4:34 pm
Forum: Dragon Hardware
Topic: Dragon disk drive RPM checker
Replies: 0
Views: 54266

Dragon disk drive RPM checker

Here's a Dragon-ised version of Robert Gault's disk drive RPM checker that I posted on FB some time ago. Use is obvious... load using a working drive, Gotek or drivewire, and then run with the drive for testing attached and a disk inserted. Note... Dragons 32s have two different possible main crysta...
by bluearcus
Mon May 22, 2023 7:14 pm
Forum: Dragon General
Topic: Dragon 64 motherboard replacement
Replies: 29
Views: 43149

Re: Dragon 64 motherboard replacement

I'd be suspicious of the 3.3v signal level output-ness of the CoCoSDC. The CoCoSDC design doesn't have a dedicated voltage regulator to bring supply down to 3.3V from the Dragon's 5V. It uses a regulator on the SD card reader module. Try measuring the 5V line on the CoCoSDC and the supposed 3.3V out...
by bluearcus
Mon May 15, 2023 11:18 am
Forum: Dragon General
Topic: Dragon 64 motherboard replacement
Replies: 29
Views: 43149

Re: Dragon 64 motherboard replacement

Yeah, if you are getting strange CoCoSDC behaviour, I'd always look as a first option at obtaining and fitting a pullup board.