Video output cards
DIY
On page 50 of the Feb-Mar edition of Micro Cornucopia a video output circuit is described. Click here.
3 Chip Unknown
This video output board is from an unknown manufacturer. I have multiple machines with this board in it.
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Microsphere Video
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Described but I haven't seen
Legacy Computer Systems
External Video Monitor Adapter - Our video monitor adapter allows the attachment of from 1 to 16 external monitors (attached in series) to a KAYPRO computer system. The kits installation reqiures the insertion of a composite video jack through the cooling vents in the rear of the cabinet. The video comes complete with a horizontal sync alignment potentiometer (in case the monitor does not have a horizontal adjustment mechanism. $118.
(Kugram Vol 2, Number 4, Page 16)
AT1 by JFN Industries
"The second problem is with the AT1 Video Attribute board from JFN Industries, Los Angeles."
(Micro Cornucopia, Feb-Mar 1986)