Re: Imagewriter handshaking

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Article #15622

#15622

From: David Phillip Oster
Date: Thu, 16 Apr 1987 02:57

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The current version of the Imagewriter driver queries the printer to find
out whether the printer has its dip-switches set for hardware (DTR)
handshaking, or data (^S,^Q (XON/XOFF)) handshaking. If the printer tells
it it understands DTR handshaking that is what the mac trys to use, otherwise
data handshaking is used.  This means that Thunderscan users (Thunderscan
sends the scan data on the DTR line) can set the DIP switches for
Thunderscan, and leave them that way, the Imagewriter driver can still use
the printer just fine.  This means that if you are using an old parallel
C. Itoh printer, hooked to a parallel to serial converter, then either the
converter should support DTR handshaking and you should set the DIP
switches to use it, or the converter should support data handshaking and
you should set the printer dip switches to use _it_.

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References: <1999@k.cc.purdue.edu> <1540@umd5.umd.edu>

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From: oster@lapis.berkeley.edu (David Phillip Oster)
Newsgroups: comp.sys.mac
Subject: Re: Imagewriter handshaking
Message-ID: <3184@jade.BERKELEY.EDU>
Date: Wed, 15-Apr-87 21:57:12 EST
Article-I.D.: jade.3184
Posted: Wed Apr 15 21:57:12 1987
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