Search found 266 matches

by prime
Thu May 06, 2010 2:01 pm
Forum: Dragon General
Topic: Superdos in upper memory
Replies: 3
Views: 2490

Re: Superdos in upper memory

Not sure what you mean. DOS is always in the upper part of address space, was this just a switch on the chip selects? Maybe he means that it was patched to have it's buffers in the $E000-$FEFF area, I guess that could work if you have a 64K machine and on cold start copied $8000-$FEFF to RAM. Humm ...
by prime
Sun Apr 18, 2010 2:16 pm
Forum: Dragon General
Topic: Extra PCB fitted to Dragon 32
Replies: 14
Views: 10456

Re: Extra PCB fitted to Dragon 32

Quite a co-incidence this discovery, given my other thread about display quality! Like Alastair, I'd be intrigued to know which Dragons this would work with. Might it already have been done on the later issue5/6 boards, which is why they have a better quality display? Or is it better still? I love ...
by prime
Sat Apr 17, 2010 1:01 am
Forum: Dragon General
Topic: Extra PCB fitted to Dragon 32
Replies: 14
Views: 10456

Re: Extra PCB fitted to Dragon 32

Right having bought that self same non-working Dragon, thanks RWAP, I didn't realise it was boxed, and though the box was a little scrappy it had a decent set of pollys :) It works now BTW, had to supply a PSU board, change the pot behind the power connector and change the standoff on the addon boar...
by prime
Fri Apr 16, 2010 7:28 pm
Forum: For Sale
Topic: Selling a Dragon 200
Replies: 15
Views: 13271

Re: Selling a Dragon 200

In that case I may be interested in the unboxed one depending on the price....

Cheers.

Phill.
by prime
Wed Apr 14, 2010 11:12 pm
Forum: Dragon General
Topic: Deltados manual
Replies: 0
Views: 2009

Deltados manual

Hi all,

Does anyone happen to have a copy of the manual for the DeltaDos cart, I've just picked up one from ebay, but can't get it to format a disk, I think having the manual would help greatly.....

Cheers.

Phill.
by prime
Sun Apr 04, 2010 3:23 pm
Forum: Dragon General
Topic: Blank Cartridge board on ebay
Replies: 4
Views: 3940

Re: Blank Cartridge board on ebay

Yes, it is. I do prefer PCB Artist, because it's free and far easier to use than eagle, in my opinion. Eagle's not too bad once you get used to it, and is actually pretty reasonably priced for the hobbyest eddition. Also PCB Artist seems tied to one board house, which is deffo a disadvantage, can y...
by prime
Wed Mar 24, 2010 2:26 am
Forum: Dragon General
Topic: Blank Cartridge board on ebay
Replies: 4
Views: 3940

Re: Blank Cartridge board on ebay

Someone is selling empty cartridge boards. Check it out: http://cgi.ebay.com/TRS-80-Color-Computer-Dragon-32K-Blank-Cartridge_W0QQitemZ220568843153QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item335aed7391 I orderd three. I thought people would like this! Whilst I applaud support of retro computers,...
by prime
Mon Mar 15, 2010 6:12 pm
Forum: Dragon General
Topic: Dragon 32 problems troubleshooting
Replies: 6
Views: 3912

Re: Dragon 32 problems troubleshooting

Just dug out my old Dragon 32 (actually have 2) Plugged it in and the screen is displaying mostly @@@@@@@@&&&&&&& things like that I was wondering if anyone knew of any possible fixes or can point me in the right direction for a guide to repair (not much on the net) May be a problem with the video ...
by prime
Sun Feb 28, 2010 10:19 pm
Forum: Dragon General
Topic: WANTED: 5.25" disk drives
Replies: 16
Views: 10713

Re: WANTED: 5.25" disk drives

They keep reseting pin 34 (DSK CNG / READY) randomly which linux then reports as the disk being changed whilst I try to read it. The jumpers are all set for AT mode working (DS1, DC etc) but I think the sensor needs replacing. Yeah that sounds like it could be the problem, also check for dry solder...
by prime
Sun Feb 28, 2010 10:37 am
Forum: Dragon General
Topic: WANTED: 5.25" disk drives
Replies: 16
Views: 10713

Re: WANTED: 5.25" disk drives

Depending on what version of fdparm you have, I have whatever is the stock for SuSE 10.0, the following will work.... # # DragonDos 40 track disk in 80 track drive (eg 1.2M). # for 40 track in 40 track drive, set the 6th column to # 0 instead of 1 (like the 80 track formats below !). # # -5 are for ...