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   Linux FAQ > 8. How To Do This or Find Out That...
Question:  8.16. Can Linux Use More than 3 Serial Ports by Sharing Interrupts?
Answer:

Yes, but you won't be able to use simultaneously two ordinary ports which share an interrupt (without some trickery). This is a limitation of the ISA Bus architecture.

See the Serial HOWTO for information about possible solutions and workarounds for this problem.


This FAQ is from Linux Frequently Asked Questions with Answers, maintained by Robert Kiesling

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