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Dragon 200 circuits and lower case mod circuits
Posted: Tue May 12, 2020 12:42 pm
by jdavis6809
hello,
looking for dragon 200 circuits and the lower case mod circuit
googling comes up with nothing
regards
john davis uk
Re: Dragon 200 circuits and lower case mod circuits
Posted: Tue May 12, 2020 11:29 pm
by robcfg
Hi John, welcome to the Dragon Archive!
The Dragon 200 board is the same as the Dragon 64.
Regarding the lowercase circuit, you can see our nice scans of the daughterboard here:
http://archive.worldofdragon.org/index. ... ragon_200E
Hope this helps!
Re: Dragon 200 circuits and lower case mod circuits
Posted: Wed May 13, 2020 2:37 pm
by prime
John W has also done a modern re-creation of the lower case board if you are on facebook, he posts regually there,
Cheers,
Phill.
Re: Dragon 200 circuits and lower case mod circuits
Posted: Thu May 14, 2020 1:25 pm
by dublevay
Phill - it was Jon Davis who enquired after whether I was going to make more lower case boards, and he mentioned some of his potential future plans for development. I mentioned that an RGB board was in beta testing, as it may or may not be a worthwhile venture for him.
Re: Dragon 200 circuits and lower case mod circuits
Posted: Fri May 15, 2020 12:07 am
by jdavis6809
hello,
but there no circuit diagram for the low case mod ?
regards
john davis uk
Re: Dragon 200 circuits and lower case mod circuits
Posted: Sat May 16, 2020 11:05 am
by dublevay
No. I reverse engineered them from the photos of the original 200E daughterboard coupled with a little extra information about connectivity under the LS00 on this forum I think. It's quite a simple circuit. How far have you got with it? Didn't you buy one of my more recent SMD versions?
Re: Dragon 200 circuits and lower case mod circuits
Posted: Thu Jun 25, 2020 1:29 pm
by jdavis6809
hello,
smd version
not fitted yet
as I want to develop component video mod first
I have found the coco lowercase kit circuit
is it possible implement this type of mod via the cartridge slot ? (by writing lowercase characters from cartridge rom )
john davis uk
Re: Dragon 200 circuits and lower case mod circuits
Posted: Thu Jun 25, 2020 9:06 pm
by bluearcus
Use the expansion port to host VDG character ROM? In short, not a chance.