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View Full Version : WYSE 990058 PCB (WYSE WY-50?) - can i start it without CRT?



Tronix
April 26th, 2014, 11:11 AM
Hello, today i get WYSE TECHNOLOGY 1984 990058 PCB:
18485
full size image: http://habrastorage.org/files/8a8/42d/813/8a842d8130554a5fa77fde7a58ff2bd9.jpg

If i understand correctly, its WYSE WY-50 motherboard. So, i want start this board, but i havent PSU, keyboard and CRT for it. I found some manuals for WYSE WY-50 and, first of all, i want to know, -23V is mandatory signal for start up? I have standart ATX PSU, so +5, -12, +12V signals not a problem. But i dont know how get -23V.
18487

In attachment firmware from this board for historical purpose.

Tronix
November 5th, 2014, 09:48 PM
Anybody?