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Hello
I found another card. This time, it looks like a clone of some commercial card (or maybe a home brew project)
Could you help again? And please tell me, if it is inappropriate to ask such things in this forum.
Kind regards
It's a copy of the Videx 80 column card for the II/II+
No problem at all to to ask.....
speedyG
I wonder if this was a Prototype Card?? Or the Manufacture was going, Super Cheap???
Note the label over the PROM says 50Hz and Videx.
Very nice Ceramic 6845 and PROM..
MarkO
I'll see whether I can take some pictures in better resolution or of some details if there is interest in that. Just let me know.
I have some other beta stuff too. E.g. I just recently found a beta card of grappler buffer for ImageWriter and also an early silentype printer (relatively low serial number)
No. For a period of time between roughly '79 through '82, you could buy blank copies of the several popular boards. They were all laid out, but nothing mounted to them. You'd get the card from one place, buy the ICs from somewhere else and then assemble it yourself. The assembly instructions, bill of materials and the card's circuit layout were all published in a catalog you could order.