home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.os.linux
- Path: sparky!uunet!enterpoop.mit.edu!bloom-picayune.mit.edu!daemon
- From: tytso@ATHENA.MIT.EDU (Theodore Ts'o)
- Subject: Re: Serial driver issues
- Message-ID: <1992Dec22.055745.25095@athena.mit.edu>
- Sender: daemon@athena.mit.edu (Mr Background)
- Reply-To: tytso@ATHENA.MIT.EDU (Theodore Ts'o)
- Organization: The Internet
- Date: Tue, 22 Dec 1992 05:57:45 GMT
- Lines: 12
-
- This needs to be added to the Serial FAQ!
-
- Due to limitations in the ISA hardware bus, it is *not* possible for two
- serial ports (to wit, COM1 and COM3) to share an IRQ simultaneously.
- You need to take one of your serial boards and rejumper it to use
- another IRQ, such as IRQ 2 or IRQ 5. Otherwise, it simply won't work.
-
- It is true that there are some hardware hacks around that allow two
- boards to share an IRQ simulatenously. Most of them are not reliable,
- and will just get you into trouble; therefore, I do not recommend them.
-
- - Ted
-