Ref: 10710079
Title: Performance problems with parallel printers (including HP LaserJets)
Date:  7/19/88

Copyright 3Com Corporation, 1991.  All rights reserved.

The following applies to all parallel printers:

Problem: Customer having serious performance degradation on Laserjets and
Laserjet 500+ printers running parallel on 3server3s.  The
printer will cycle-down between pages due to the delay.

The trick is that the default parallel I/O speed is controlled by
COM.SYS, and is rated at 300 characters per second, or roughly 3Kbaud.
With 3+ 1.2 or above, you can increase this by specifying a higher speed
to COM.SYS:

    device=COM.SYS 1600

The 1600 is characters per second and is the fastest supported,
at this writing.  However, 1600 characters per second is roughly
16K baud, and in tests I've run it actually will go that fast.

2/19/88
