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From: terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr.)
Newsgroups: comp.misc,comp.sys.dec
Subject: Re: LP27 on MicroVAX - more information
Message-ID: <1991Jun4.013540.1425@spcvxb.spc.edu>
Date: 4 Jun 91 01:35:39 GMT
References: <1991Jun3.234008.2414@zia.aoc.nrao.edu>
Organization: St. Peter's College, US
Lines: 17

In article <1991Jun3.234008.2414@zia.aoc.nrao.edu>, rmilner@zia.aoc.nrao.edu (Ruth Milner) writes:
> A while back I posted a query about interfacing an LP27 to a BA23-based 
> uVAX-II. I have since found out that the third-party UNIBUS interface we have 
> for it does configure as an LP11, but it actually emulates the parallel port 
> of a DMF-32. This explains why the printer, which supposedly has a Dataproducts
> interface, would not work on a Convex.

  The DMF's parallel port (when jumpered for operation as a printer) has the
same pinouts as an LP11 interface. Thus, the printer configuration and cable
are the same. The programming interface is different, though - but that's
normally handled by the VMS (or Unix, or whatever) device drivers.

  The Q-bus LP11 card is an LPV11.

	Terry Kennedy		Operations Manager, Academic Computing
	terry@spcvxa.bitnet	St. Peter's College, US
	terry@spcvxa.spc.edu	(201) 915-9381