DEC lk201 keyboard for DEC Terminal vt220

Jan-Benedict Glaw jbglaw at
Sun Sep 16 05:57:02 CDT 2018

On Sat, 2018-09-15 16:14:53 +0200, Carlo Pisani via cctalk <cctalk at> wrote:
> hi
> about DEC lk201 for DEC Terminal vt220,
> I am looking for information about
> - the pinout of the connector (it should be 4 pins, sort of serial)
> - the protocol used
> - key keymap

There is extensive documentation around. If you look at Linux's
lkkbd.c[1], you'll find the pinout, how to build an adaptor to use it
on a regular serial port and a pointer to some scanned PDF[2] where
the hardware and protocol is descriped in depth.


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