Search found 245 matches

by prime
Wed Jul 22, 2009 1:32 am
Forum: Dragon General
Topic: Co-Co Ram size detection?
Replies: 11
Views: 2163

Re: Co-Co Ram size detection?

Bad luck with the 16K, but there are an awful lot of them out there. At least you didn't get an ultra-early 4K model. ;) (Or maybe they're worth more?) Yeah I believe so as the majority where upgraded..... Upgrading might be possible... And for the most part with a CoCo 1 which is what the OP has, ...
by prime
Wed Jul 08, 2009 1:30 am
Forum: Dragon General
Topic: Wanted Quickshot 1 or 2 for Dragon/Co-co
Replies: 3
Views: 871

Re: Wanted Quickshot 1 or 2 for Dragon/Co-co

I have a couple of the voltmace sticks and they are quite nice also, as they are also self centering.

I believe they where also available for the BBC too.

Cheers.

Phill.
by prime
Fri May 29, 2009 10:59 pm
Forum: Dragon General
Topic: General Instruments AY sound chip interface?
Replies: 4
Views: 909

Re: General Instruments AY sound chip interface?

The Dragon Alpha also had one as standard (AY-3-8912), used it for sound and to control the drive selects on the disk interface. It would be possible to add this to a Dragon 32/64, but would require socketing one of the PIAs, and adding a second, the AY was connected to one of the ports on the 3rd P...
by prime
Sun May 17, 2009 11:08 am
Forum: Dragon General
Topic: Cartridge question
Replies: 4
Views: 987

Re: Cartridge question

What puzzles me is that only the first of the two socketed chips have the "erase window". Maybe they used a mixed of EPROMS and non erasable roms? I have seen some EPROMS used in Dragon carts where instead of the sticker, the window was painted black. The other posibility is that the second chip is...
by prime
Fri Apr 10, 2009 1:54 am
Forum: Dragon General
Topic: Tano Dragon 64
Replies: 42
Views: 7755

Re: Tano Dragon 64

In short no.... for the following reasons: 1. The D32 and D64 power boards are slightly different although the later D32 PSU boards should work Though it is pretty easy to convert one to the other, by switching the 7912 regulator for a 7905, or vice-versa, 7912 is -12V for the 64, 7905 is -5V for t...