DECstation 3100/2100 serial ports

[Fred Thompson]

We have some printers (LA100's and LA75's) that we would like to hang off
of our DECstation 2100/3100's we have in peoples offices. We are having 
problems getting them to work at all. The LA75 works most of the time,
but the LA100 doesn't do anything. I thought I had seen someone mention
that these ports were different than normal serial ports and didn't have
some signals. Anyone have any ideas on whats different with these ports.
Thanks.

-- 
Fred Thompson,   ...!samsung!swlvx2!fct  or  fct at swlvx2.msd.ray.com
Raytheon Co,     Missile Systems Division, Tewksbury, Mass. 01876