Path: utzoo!attcan!uunet!aplcen!uakari.primate.wisc.edu!sdd.hp.com!ucsd!ucbvax!CU.NIH.GOV!RAF
From: RAF@CU.NIH.GOV (Roger Fajman)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re:  Who has INT14 specs for network comms?
Message-ID: <9009292304.AA27382@alw.nih.gov>
Date: 29 Sep 90 23:06:59 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 17

> From the discussion about INT14, I understood that there exists an
> extension to the normal INT14 for the serial ports on XT/AT/PS2.
> Has anyone such a specification available?
> I'd like this because I would like to make an INT14 handler for
> a TCP/IP package.

The definition of INT 14 is in the IBM Tech Ref manual for the PC/AT.
There were extensions to INT 14 defined for the PS/2.  Those are
described in the IBM PS/2 BIOS Tech Ref manual.  There are also 3rd
party sources, such as Peter Norton's book, Inside the IBM PC and PS/2.

Bridge Communications (now part of 3Com) defined their own extension to
INT 14 called BAPI.  The description of that is in their manuals on
products such as PCS/XNS and 3+Open XNS.  The extensions provide the
ability to transfer blocks of data instead of a byte at a time.  They
also provide a call for generating a break signal, which is missing
from the original INT 14 spec, but is in the PS/2 spec.