same interrupt, different addresses?

[Larry Snyder]

gomez at ENUXHA.EAS.ASU.EDU (Jose L. Gomez-Rubio) writes:

>I'm looking to add a COM3 & COM4 serial port to my 386 UNIX box.  Is it
>true that each COM port must have it's own interrupt or can they share
>an interrupt but reside at a different address?

it depends on the design of the com boards - 

>Anyone know of a COM3&4 board that does not use INT 4 & 3?

DFI and AST make such a beast - as well as Comtrol and Digiboard.

-- 
   Larry Snyder, NSTAR Public Access Unix 219-289-0287 (HST/PEP/V.32/v.42bis)
                        regional UUCP mapping coordinator 
  {larry at nstar.rn.com, ..!uunet!nstar!larry, larry%nstar at iuvax.cs.indiana.edu}