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Subject:
From:
David Gillett <[log in to unmask]>
Reply To:
PCBUILD - PC Hardware discussion List <[log in to unmask]>
Date:
Mon, 6 Apr 1998 17:55:43 -0800
Content-Type:
text/plain
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text/plain (41 lines)
On  6 Apr 98 at 7:12, Axelrod, Marc wrote:

> 00  System timer
> 01  Keyboard
> 02  Programmable Interupt Controller
> 03  com2
> 04  com1
> 05  OPL3-SA Legacy Board
> 05  Yamaha OPL3-SA Sound System
> 06  Floppy disk Controller
> 07  LPT1
> 08  System CMOS/Real time clock
> 09  OPL3-SA Legacy board
> 09  Yamaha OPL3-SA sound System
> 10  K56 Modem
> 11  IRQ holder for PCI Steering
> 11  PCI VCB
> 12  S3 Virge PCI
> 12  IRQ Holder for PCI Steering

  13  FPU
  14  Primary IDE
  15  Secondary IDE


  Let's go for the "low-hanging fruit" first.  Although Windows has
allocated IRQ 7 for LPT1, it's not actually used.  You should be able
to set up another device on that IRQ without a real conflict.
  Do you actually use both COM1 and COM2 all the time?  [My partner
does, for a mouse and a graphics tablet.]  If not, your modem could
take over whichever IRQ the mouse isn't on.
  If you only have two EIDE devices, you might put both on one
channel and free up an IRQ that way.

  Your sound card is using two IRQs.  I've heard of some that like
three, but I've never used one that needed more than one.  You might
investigate whether there's some other configuration for this card
that uses only one IRQ.

David G

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