Path: utzoo!yunexus!geac!syntron!jtsv16!uunet!ncrlnk!ncrcae!hubcap!gatech!bloom-beacon!apple!bionet!agate!ucbvax!NIHCU.BITNET!RAF
From: RAF@NIHCU.BITNET (Roger Fajman)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re:  Communication problems involving PC-Interface and
          Procomm/Kermit
Message-ID: <8810120611.aa28388@Louie.UDEL.EDU>
Date: 11 Oct 88 21:36:44 GMT
Article-I.D.: Louie.8810120611.aa28388
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 7

> For the people who are having problems with Kermit and 3C501's: make
> sure that the 3C501 is not using the same interrupt vectors as your
> COM ports. COM1 uses interrupt 4; COM2 uses interrupt 3. Make sure the
> 3C501 isn't using 3 or 4 then. Interrupt 5 or 2 is probably safe,
> depending on what other hardware you've got installed.

Interrupt 5 is used by the hard disk on an IBM XT (but not AT).