Ref: 03250350
Title: Compatibility of Old PCs with Old Versions of 3+ and 3Com Adapters
Date:  6/87

Copyright 3Com Corporation, 1991.  All rights reserved.

Following is compatibility information for certain PCs with 3+ 1.2 and
some 3Com adapters.

LEADING EDGE Model D:  There is a timing conflict with two possible
resolutions:

a.  change I/O address on the EtherLink board to 200h

b.  disable the system clock (J12=2, J13=1)

Model MH exhibits timing conflict; requires disabling internal clock.


SPERRY IT: No problems running 3+ when using PC DOS 3.1 or later.  Won't
run using Sperry DOS.


TANDON 286:  No problems running 3+ as workstation or server; tested with
3+ 1.2.


EPSON Equity II:  Its DMA channel is slow; suggest parameter changes for
EtherLink card (NB 2 2 2, MSREDIR /z:1024)  OR use EtherLink Plus card
with packet buffering.

Equity III Plus:  Tested as server & workstation with 1.2; no problems
found; use MS-DOS 3.1 rev 1.17 or higher.