Ahh, so it was not an official extension to the ADM-3A then I assume.
I recall seeing a manual for it when I was looking for a good description of the control codes ( And I have to say, the descriptions in the ADM-3A are some of the best descriptions I've found and detail the behavior of the screen all in one place with all the necessary detail ) - Anyway, one of the manuals described a hi-res graphics add on to provide vector graphics, and I just assumed it was an extension of the ADM-3A.
Yes, it was the RG-512 I was talking about... For some reason I just assumed it was an official extension of the ADM-3A, but on reviewing the manuals again, I see it is not.
What were the Kaypro extensions to the control codes?
Thanks
David