[Coco] Reverse video mod

[Daniel Campos]

On 19/04/2015 12:59, Joe Grubbs wrote:
> Steve posted pictures of his old CoCo2s, one of which as a Lowerkit and "Reverse video mod", both selectable via chassis mounted toggle switches. The reverse video mod gives green text on a black background.
>
> Does anyone know what is being done in hardware to make this happen? Is it separate from the Lowerkit? Steve mentioned there might be a blurb about it in an old issue of Rainbow, but I've not yet found it.
>
> Note that this is something I'd like to do on a CoCo2 with the 6847 VDG (NOT the T1 version, which is apparently more configurable with some clever POKES).
>
>
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Joe,

That is a simple mod and was described in one of the "Turn of the Screw" 
articles.

http://sparksandflames.com/files/FullTurn.pdf

Codimex made this mod a default option on the Codimex CD-6809 machine 
here in Brazil.

Daniel