PS/2 keyboard subsystem

Provides (key) from a driver providing (ps2kc). That is, for a
driver taking care of providing all key codes emanating from a
PS/2 keyboard, this subsystem takes care of mapping those key-
strokes to ASCII characters. This code is designed to be cross-
compiled and loaded with drivers.

Requires PS2_MEM to be defined.

Load range: 411-414
