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<== Date ==> <== Thread ==>

Subject: Parallel port hardware and drivers
From: "Mark Rivers" <rivers@cars.uchicago.edu>
To: <tech-talk@aps.anl.gov>
Date: Fri, 18 Apr 2003 15:17:52 -0500
I need to communicate with a bi-directional parallel device using the EPP handshaking protocol from a VME/vxWorks EPICS system.

A few questions:

- I am using an MVME2700 CPU with the 761 transition card.  This has a parallel port with full IEEE-1284 capabilities, which includes EPP.  Is there a vxWorks driver for this port available?

- Anyone have experience with other modules (VME, Industry Pack, etc.) that can do EPP bi-directional parallel I/O under vxWorks?

I could use "dumb" parallel I/O card and implement the EPP handshaking in software, but I'd like to avoid this if at all possible, since I want high performance and low overhead.

Thanks,
Mark Rivers




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