13 Sep
2016
13 Sep
'16
4:30 p.m.
----- Original Message -----
From: "Al Kossow" <aek at bitsavers.org>
To: <cctalk at classiccmp.org>
Sent: Tuesday, September 13, 2016 12:34 PM
Subject: Re: G4 cube (was Re: 68K Macs with MacOS 7.5 still in production use...)
On 9/13/16 9:25 AM, Mark J. Blair wrote:
===========================
How about Falco? I've got four or five different models/versions here; do you want me
to dump the ROMs? Doesn't seem to be much interest in Falcos but I guess I really
should scan the docs one day anyway..
They also used 4-conductor (straight-through) phone-type coiled cords, but with
non-contact inductive 'keyswitches' that move a little ferrite core between pads
on the PCB; no rotted foam or bad contacts ;-)
m
If you are not opposed to making a custom PCB to
stuff with Cherry MX keyswitches, then you have a lot of freedom.
True enough. I have even bought some switches and non so great Cherry keyboards to
harvest keytops.
About 10 WY-30 keyboards in so-so condition showed up for about $7 ea, so i'll
probably just go with
that, since they seem to be the least desirable (next to WY-50) for the mechanical
collectors.
Televideo was pretty consistent with their serial keyboard protocol and voltages, Qume..
not at all.
I've identified at least 4 different styles of 4-pin connector keyboards using either
12 or 5 volt power.
Then, there is ADDS, Hazeltine, Microterm, DG, Freedom, ...