Data general protocol
Posted: 15 Sep 2018, 03:31
Hi gang, does anyone know of or have any kind of protocol data for Data General keyboard<-->terminal connection? I've got a leaf spring 3rd gen board with a db-9 connector and it's using 6 lines -- 2 serial in/out pins, and 4 others called KBIRQ, KBC RESET, CLK COM and SCLK.
I'm going by some info in this patent: https://patents.google.com/patent/US4459581 -- and I found a pinout of the connector but have very little info on the wire protocol. It seems to want 2 pulses of KBC RESET to start.
I'm going by some info in this patent: https://patents.google.com/patent/US4459581 -- and I found a pinout of the connector but have very little info on the wire protocol. It seems to want 2 pulses of KBC RESET to start.