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Article #504Need info on bi-directional use of PC parallel (LPTx) port
From: Joseph J. Kubicky
Date: Wed, 04 Nov 1992 21:11
Date: Wed, 04 Nov 1992 21:11
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941 bytes
I need some information on how most of the new PC printer ports are wired. I know that most of these machines allow a bi-directional use of the port. Is there any provision for interrupts generated by an external device? Or do you just get a strobe line and have to design your external device such that it always returns SOMETHING when strobed? Also, is there any provision for DMA? Jay Kubicky jkubicky@cco.caltech.edu
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Path: arc1-ca.pugleaf.net!sparky!uunet!charon.amdahl.com!pacbell.com!ames!sun-barr!cs.utexas.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!elroy.jpl.nasa.gov!nntp-server.caltech.edu!jkubicky From: jkubicky@cco.caltech.edu (Joseph J. Kubicky) Newsgroups: sci.electronics Subject: Need info on bi-directional use of PC parallel (LPTx) port Date: 4 Nov 1992 21:11:34 GMT Organization: California Institute of Technology, Pasadena Lines: 11 Message-ID: <1d9ea6INNs4v@gap.caltech.edu> NNTP-Posting-Host: punisher.caltech.edu