View Full Version : Corona PC400 keyboard adapter

March 12th, 2017, 10:26 AM

I have got a Corona PC400, not the portable version ! I connected to my IBM 5151 monitor. I cannot start the system, because i havenīt got a keyboard.
So, i disassembled the computer completely and soldered some wires to the keyboard connector. I want to connect an IBM XT keyboard, but without success..

I found +5V and GND on the connector. If i connect these 2 pins and shortly remove 5 V, computer starts fine. But of course, i cannot use keyboard just with 5V and GND.

Has anybody a diagram to build an adapter, that i can use IBM keyboard on Corona ??

Please help !!