Re: IBM Keyboard Output

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Article #10295

#10295

From: Clarence Wilkerson
Date: Mon, 18 Feb 1991 21:50

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In an XT, the receiving of keyboard input is done in software, reading from a
8255 parallel port rigged to receive a serial with sync line. If you read the
xt technical manual, you'll find both hardware and software details.
  AT's have a dedicated controller.
Clarence Wilkerson

Technical Details

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References: <1991Feb18.185444.7021@uhura.neoucom.EDU> <steveh.666607654@tasman> <1991Feb17.065421.27814@athena.cs.uga.edu>

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From: wilker@descartes.math.purdue.edu (Clarence Wilkerson)
Newsgroups: sci.electronics
Subject: Re: IBM Keyboard Output
Message-ID: <6215@mentor.cc.purdue.edu>
Date: 18 Feb 91 21:50:03 GMT
References: <1991Feb18.185444.7021@uhura.neoucom.EDU> <steveh.666607654@tasman> <1991Feb17.065421.27814@athena.cs.uga.edu>
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