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- Path: sparky!uunet!gatech!paladin.american.edu!howland.reston.ans.net!usc!celia!techsys!berk
- From: berk@techsys.UUCP (Berk Walker)
- Newsgroups: comp.os.linux
- Subject: Re: Serial driver issues
- Message-ID: <6729VB2w165w@techsys.UUCP>
- Date: 23 Dec 92 19:19:28 GMT
- References: <1992Dec22.055745.25095@athena.mit.edu>
- Organization: Private for Now
- Lines: 19
-
- tytso@ATHENA.MIT.EDU (Theodore Ts'o) writes:
-
- > 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
-
- multiport boards, such as the fine ones from arnet, work great using 1
- irq, or none.
-
- Berk Walker berk@techsys.mcws.fidonet.org
-