Just to be sure -- the PC keyboard you're using is an actual PC/XT
compatible keyboard, not an AT, correct? The PC/XT used a different
protocol and is incompatible with later keyboards...
- Josh
On 1/23/17 8:53 AM, Randy Dawson wrote:
Hi William,
I did use the original kybd to trace out the clock and data, most of the keys
work, and I have good scope shots. I am on it again today, because it sure
seems like it should work, using a PC keyboard.
I did not take scope shots on the first test, thinking it should just work.
Hopefully its just a signal inversion, I cant imagine the protocol is that
different. Each keypress looked like a byte of data, 8 cycles on the clock
line with corresponding bits on data line.
Randy
________________________________
From: cctalk <cctalk-boun...@classiccmp.org> on behalf of william degnan
<billdeg...@gmail.com>
Sent: Monday, January 23, 2017 5:29 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Attempt at Compaq keybord swap with a PC keyboard (failed)
Easier to fix the foam. But a tip to replace the keyboard...use the Compaq
keyboard bare by pressing fingers directly on the board, verify that works
that way (it should). Record the signals' wire path, match the replacement
keyboard wiring.
B
On Jan 23, 2017 12:45 AM, "Randy Dawson" <rdawso...@hotmail.com> wrote:
This is the original Compaq I IBM PC clone, 8088
________________________________
From: cctalk <cctalk-boun...@classiccmp.org> on behalf of Fred Cisin <
ci...@xenosoft.com>
Sent: Sunday, January 22, 2017 9:42 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Attempt at Compaq keybord swap with a PC keyboard (failed)
On Mon, 23 Jan 2017, Randy Dawson wrote:
I have luggable with the famous Keytronics foam kepad rot.
WHAT model Compaq?
8088? 80286?
