Date : Tue, 28 Aug 1990 10:13:01 PDT
From : email@example.com (Roger Hanscom)
Subject: Kaypro II needs help!
Hello All --
Any Kaypro II users out there?? I've got one that acts like someone's
leaning on the three key. When I power it on, the "A>" prompt comes up,
but then a line and a half of threes follows. CP/M tries to interpret
that as a command line, echoes it back (followed by a "?"), and then the
whole thing starts again. It does this with the keyboard disconnected
also. Once I got CP/M to come up clean, but then the first key I pressed
filled the screen ("D" from "dir"). I've got no schematic, so I haven't
much of a clue where to start to look. Anybody seen this before?? Does
the keyboard (serial) go in via a PIO, SIO, or a TTL 8-bit serial shift
register (74LS164 ??) ? Any comments would be appreciated.