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Subject:
From:
Robert Hale <[log in to unmask]>
Reply To:
PCBUILD - Personal Computer Hardware discussion List <[log in to unmask]>
Date:
Sat, 11 Jul 1998 13:29:34 -0400
Content-Type:
text/plain
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text/plain (27 lines)
Yes, that is right.  This is why I thought it very weird that the HP
would have COM1 IRQ4 and COM3 IRQ4 set as the default values for the 2
COM ports in the BIOS settings, since they do conflict IRQ's.  I figured
that COM1 IRQ4 and COM2 IRQ3 would be the defaults, but they are not.

Thanks...
Robert


Martin Irish wrote:
>
> At 10:45 AM 7/10/98 -0400, Robert Hale wrote:
>
> >believeit or not, it has COM1 IRQ4 and COM3 IRQ4 setup as defaults.  Looks
> >crazy to me seeing how those 2 IRQ's conflict, but that's the way it was
> >setup.
>
> FYI, COM1 and COM3 have always shared IRQ4, just like COM2 and COM4 have
> always shared IRQ3.  It's been that way since the invention of COM ports.
> That's why you can't have a device like your mouse on COM1 and expect a
> modem to work on COM3, unless you change the IRQ to something that doesn't
> conflict.
>
> Good Luck.
>
> Martin Irish    8?)

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