Keyzone Spectragram Apple IIe RGB Video Card

STYNX

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Sep 19, 2014, 8:41:36 AM9/19/14

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I have gotten my hands on this interesting RGB-Card specimen and wanted to know if there is anyone who can give me a hint on how to install it...

I have found a Review of the card in the 10/1984 "APPLE USER" Magazine but it does not give very useful details on the installation. Several features of the card are described.

https://www.flickr.com/photos/88521483@N03/15287208695/

-Jonas

Rob Justice

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Sep 21, 2014, 10:45:14 AM9/21/14

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could you post a picture of the card?

/Rob

Rob Justice

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Sep 21, 2014, 11:18:16 AM9/21/14

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If its a card that goes in slot7 and not for the IIe 60pin slot, then perhaps it may have similiar requirements to this RGB card. I have a video7 RGB-SL7 which is the same as the card in this manual: (Teknika must be a rebranded version)

http://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Video/Teknika%20MA-RGB7/Manuals/Teknika%20MA-RGB7%20-%20Manual.pdf

It requires the 14Mhz clock signal and the signal from the video output shift register.

/Rob

STYNX

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Sep 21, 2014, 3:32:33 PM9/21/14

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Interesting Card, but its not the same. The card i have can be used in any Slot (except Solt3 on the //e).
It is nearly full length and is an original design by the UK based corporation Keystone. I expect that the 14mhz signal is transferred to the card by a clip that has to be installed on a chip (as indicated by the article i have uploaded to the flickr account). I think that the card has to have several clips installed on the Apple Mainboard to work as described.

Im very interested in the 256 color mode the card offers. Every configuration is Software controlled. The text-color, and CLUT can be set by POKE-commands. I have found some evidence that the CLUT can be used like the 3200-mode in the IIgs (16 colors/line out of 256 colors). The CLUT is 16x8bit with 3 red, 3 green and 2 blue bits per register. The card has TTL-RGB, "high linear"- and "standard linear" RGB output. The CLUT is only usable with the linear (analog) RGB port. Some references suggest that there may be special screen modes that offer more resolution.

-Jonas

Rob Justice

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Sep 22, 2014, 11:06:52 PM9/22/14

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No problems, I thought it might give you some clues as this card also needed two clip on wires.

I re read the article you posted, it give the impression that if you put it in slot 7 you need less wires connected. So perhaps that may help work out some of them.

Let us know if you get it going, and I.m still interested to see a pic.

Also, I have a schematic drawn of the one I posted the link for, if your interested I can email it to you. I'd imagine the techniques for rgb output would be similar, it might help to reverse engineer the connections for your card.

/Rob

STYNX

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Sep 24, 2014, 5:03:02 AM9/24/14

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On Tuesday, September 23, 2014 5:06:52 AM UTC+2, Rob Justice wrote:
> Let us know if you get it going, and I.m still interested to see a pic.

https://www.flickr.com/photos/88521483@N03/15316640816/

Rob Justice

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Sep 28, 2014, 4:27:47 AM9/28/14

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Thanks