Dragon 200 circuits and lower case mod circuits

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jdavis6809
Posts: 4
Joined: Tue May 12, 2020 12:33 pm

Dragon 200 circuits and lower case mod circuits

Post by jdavis6809 »

hello,

looking for dragon 200 circuits and the lower case mod circuit

googling comes up with nothing

regards

john davis uk
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robcfg
Posts: 1301
Joined: Sat Apr 04, 2009 10:16 pm
Location: Stockholm, Sweden

Re: Dragon 200 circuits and lower case mod circuits

Post 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!
prime
Posts: 245
Joined: Fri Apr 10, 2009 1:40 am

Re: Dragon 200 circuits and lower case mod circuits

Post 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.
dublevay
Posts: 56
Joined: Wed Jan 23, 2019 3:41 pm

Re: Dragon 200 circuits and lower case mod circuits

Post 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.
jdavis6809
Posts: 4
Joined: Tue May 12, 2020 12:33 pm

Re: Dragon 200 circuits and lower case mod circuits

Post by jdavis6809 »

hello,

but there no circuit diagram for the low case mod ?

regards

john davis uk
dublevay
Posts: 56
Joined: Wed Jan 23, 2019 3:41 pm

Re: Dragon 200 circuits and lower case mod circuits

Post 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?
jdavis6809
Posts: 4
Joined: Tue May 12, 2020 12:33 pm

Re: Dragon 200 circuits and lower case mod circuits

Post 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
bluearcus
Posts: 69
Joined: Wed Sep 07, 2016 4:45 pm

Re: Dragon 200 circuits and lower case mod circuits

Post by bluearcus »

Use the expansion port to host VDG character ROM? In short, not a chance.
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