From: Theodore Ts'o (tytso@athena.mit.edu)
Date: 02/28/93


From: Theodore Ts'o <tytso@athena.mit.edu>
Subject: Re: Multi-user-board under Linux
Date: 28 Feb 1993 22:59:23 -0500


   From: mfrankow@hamline.edu (Mike Frankowski)
   Date: Sun, 28 Feb 1993 00:03:24 GMT

   : Hello all,
   : What kind of multiuser-board is linux supprting,if any?
   : I need one for a RS422 serial line.
   : Thanks
   : Ernst

   AST 4 port works
   Boca 4 port (emulates AST)
   Accent Async 4 port works

Actually, the Boca boards aren't emulating the AST Fourport; the boards
are similar, but not identical. Boca was kind enough to lend me one of
their boards, and I explicitly made sure the Boca board would work with
the serial driver. In fact, Linux will support the Boca 4 port, the 8
port, and the 16 port --- any of Boca's dumb serial interfaces.

I currently have no plans to support Boca's 16 and 64 port intelligent
serial interfaces; although somebody else might decide to work on it, if
he/she felt really inspired. (It would be a lot of work, and you'd have
to do it as an entirely separate device driver.)

                                                - Ted