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Groups > comp.os.msdos.programmer > #1003

Re: How to program my own keyboard driver?

From Ross Ridge <rridge@csclub.uwaterloo.ca>
Newsgroups comp.os.msdos.programmer
Subject Re: How to program my own keyboard driver?
Date 2013-09-21 11:56 -0400
Organization University of Waterloo
Message-ID <l1kfk9$6kf$1@rumours.uwaterloo.ca> (permalink)
References <027615d4-f6f5-4664-bef1-e1aa1cd5f6bf@googlegroups.com> <op.w3o070kj0e5s1z@localhost> <30441cb4-2bd7-45eb-9aba-3e27a91d8374@googlegroups.com> <op.w3p4rbid0e5s1z@localhost>

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Rod Pemberton <dont_use_email@nohavenotit.com> wrote:
>Standard USB keyboards for IBM compatible PCs fallback to using the
>PS/2 protocol on USB wiring when they don't receive a USB handshake.
>This is so the USB to PS/2 adapters work.

While it used to be common for USB keyboards to also support the PS/2
keyboard interface using a simple passive adapter, this was never a
standard and is very rare today.  Most modern USB keyboards only support
USB and won't work with any of these old adapters (which were manufacturer
specific and not generally interchangabe).  

Of course it's possible that one of these C64 keyboard USB devices also
supports PS/2 connections through some sort of passive adapter, but I
would't assume so unless it's actually listed as a feature.

An active USB to PS/2 adapter, one that actively converts the USB protocol
to the PS/2 protocol, should work just fine however.  It would just then
be a matter modifying C64 keyboard to USB adapter to work with the PET
keyboard instead. 

				Ross Ridge

-- 
 l/  //	  Ross Ridge -- The Great HTMU
[oo][oo]  rridge@csclub.uwaterloo.ca
-()-/()/  http://www.csclub.uwaterloo.ca/~rridge/ 
 db  //	  

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Thread

How to program my own keyboard driver? Ruud Baltissen <rbaltissen@gmail.com> - 2013-09-19 09:26 -0700
  Re: How to program my own keyboard driver? JJ <duh@nah.meh> - 2013-09-20 06:02 +0700
    Re: How to program my own keyboard driver? Ruud Baltissen <rbaltissen@gmail.com> - 2013-09-20 03:07 -0700
  Re: How to program my own keyboard driver? Ross Ridge <rridge@csclub.uwaterloo.ca> - 2013-09-20 00:03 -0400
    Re: How to program my own keyboard driver? Ruud Baltissen <rbaltissen@gmail.com> - 2013-09-20 03:38 -0700
      Re: How to program my own keyboard driver? Ross Ridge <rridge@csclub.uwaterloo.ca> - 2013-09-20 09:19 -0400
  Re: How to program my own keyboard driver? "Rod Pemberton" <dont_use_email@nohavenotit.com> - 2013-09-20 00:53 -0400
    Re: How to program my own keyboard driver? Ruud Baltissen <rbaltissen@gmail.com> - 2013-09-20 03:42 -0700
      Re: How to program my own keyboard driver? Ross Ridge <rridge@csclub.uwaterloo.ca> - 2013-09-20 09:31 -0400
      Re: How to program my own keyboard driver? "Rod Pemberton" <dont_use_email@nohavenotit.com> - 2013-09-20 15:07 -0400
        Re: How to program my own keyboard driver? Ross Ridge <rridge@csclub.uwaterloo.ca> - 2013-09-21 11:56 -0400
  Re: How to program my own keyboard driver? "Bill Buckels" <bbuckels@mts.net> - 2013-09-20 20:21 -0500

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