Search found 428 matches

by sorchard
Tue Sep 15, 2020 10:38 am
Forum: Dragon General
Topic: Re Dragon MACE
Replies: 3
Views: 167

Re: Re Dragon MACE

I have an original manual that I can scan if nobody else knows of a pdf
by sorchard
Thu Sep 10, 2020 5:21 pm
Forum: Dragon Hardware
Topic: DriveWire microserver tape out mod
Replies: 0
Views: 108

DriveWire microserver tape out mod

Tormod's excellent uDW works best with a modified BASIC ROM containing a driver, otherwise it is necessary to load in a driver via other means. With that in mind I've fitted an audio output to my uDW and added support to the firmware to play a special file from the SD card in a form that can be load...
by sorchard
Thu Sep 10, 2020 5:06 pm
Forum: Dragon Hardware
Topic: Using the Wordpak2+ and the CoCo-PSG on the Dragon
Replies: 41
Views: 6101

Re: Using the Wordpak2+ and the CoCo-PSG on the Dragon

Pretty cool!

Reminds me very much of the music on Megadrive games.

Stew
by sorchard
Fri Jul 31, 2020 3:39 pm
Forum: Dragon Hardware
Topic: Dragon32 Video Output Issues
Replies: 1
Views: 350

Re: Dragon32 Video Output Issues

It might be worth tweaking the video trimmers on the main board to see if that helps. The variable resistors can sometimes go bad over time and can be restored somewhat with a bit of movement. There is a 10K pot just below the power connector that adjusts the DC bias. You should see the brightness c...
by sorchard
Sat Jun 20, 2020 1:21 pm
Forum: Dragon Hardware
Topic: ?OM errors
Replies: 10
Views: 1218

Re: ?OM errors

It's worth sounding out the seller to see if they are willing to do anything. It may well have been working when last used, but has deteriorated with time, and being rattled around in the back of a van was the last straw. It's impossible to know for sure. I should have said initially that the first ...
by sorchard
Tue Jun 16, 2020 3:38 pm
Forum: Dragon Hardware
Topic: ?OM errors
Replies: 10
Views: 1218

Re: ?OM errors

The extra resistors are fairly normal and are tweaks to the display. I've seen these on quite a few boards. As for the fault, there are many possibilities. It could be a RAM IC, ROM, CPU or SAM as previously mentioned. It could also be a bad power supply. Try lifting each socketed IC a little and pu...
by sorchard
Sat Jun 06, 2020 9:13 pm
Forum: Dragon Hardware
Topic: Video quality revisit
Replies: 1
Views: 365

Re: Video quality revisit

The colour subcarrier crystal is usually just to the left of the power connector, and just under the crystal there is a load cap C7. On some boards this is a 22pF trimmer and can be adjusted to fine tune the subcarrier frequency. If it's a long way off then the display device might struggle to lock ...
by sorchard
Sat Jun 06, 2020 11:40 am
Forum: Dragon General
Topic: XRoar Windows packaging - good? bad?
Replies: 6
Views: 957

Re: XRoar Windows packaging - good? bad?

I tried the msi on my work laptop which has Win7. The desktop shortcut works, as does the link to the manual via the start menu. The installation ended up here: C:\Program Files\6809.org.uk\XRoar snapshot 0.35.15208 I was able to put roms in either of these folders: C:\Users\Stew\AppData\Local\XRoar...
by sorchard
Wed Jun 03, 2020 9:05 pm
Forum: Dragon Hardware
Topic: Opening dragon joysticks
Replies: 2
Views: 424

Re: Opening dragon joysticks

My first thought was that there are often screws hidden under the rubber feet, but unfortunately that doesn't seem to be the case with Dragon Data joysticks. I think you're probably right and the two halves of the case are glued together. If you're lucky then some gentle heating might soften the glu...
by sorchard
Tue May 26, 2020 4:00 pm
Forum: Dragon General
Topic: Comparison of Dragon mass storage options
Replies: 10
Views: 1667

Re: Comparison of Dragon mass storage options

Interesting Stew - so have you added a ear and remote socket, and made the uDW play out the cassette loadable Drivewire dweeb? That's pretty much the size of it, though I just fit the ear socket and chose a switching type, such that plugging in the cable triggers the file playback. This scheme also...