Asus P I-P55TP4N User Manual - Page 23

Assigning DMA Channels for ISA Cards

Get Asus P I-P55TP4N PDF manuals and user guides View all Asus P I-P55TP4N manuals
Add to My Manuals
Save this manual to your list of manuals

Page 23 highlights

III. INSTALLATION (DMA Channels) III. INSTALLATION Diagnostic (MSD.EXE) utility included in the Windows directory to see a map of your used and free IRQs. For Windows 95 users, the "Control Panel" icon in "My Computer," contains a "System" icon which gives you a "Device Manager" tab. Double clicking on a specific device give you "Resources" tab which shows the Interrupt number and address. Make sure that no two devices use the same IRQs or your computer will experience problems when those two devices are in use at the same time. To simplify this process this motherboard has complied with the Plug and Play (PNP) specification which was developed to allow automatic system configuration whenever a PNP-compliant card is added to the system. For PNP cards, IRQs are assigned automatically from those available. If the system has both Legacy and PNP ISA cards installed, IRQs are assigned to PNP cards from those not used by Legacy cards. The PCI and PNP configuration of the BIOS setup utility can be used to indicate which IRQs are being used by Legacy cards. For older Legacy cards that does not work with the BIOS, you can contact your vendor for an ISA Configuration Utility. An IRQ number is automatically assigned to PCI expansion cards after those used by Legacy and PNP ISA cards. In the PCI bus design, the BIOS automatically assigns an IRQ to a PCI slot that has a card in it that requires an IRQ. To install a PCI card, you need to set something called the INT (interrupt) assignment. Since all the PCI slots on this motherboard use an INTA #, be sure that the jumpers on your PCI cards are set to INT A. Assigning DMA Channels for ISA Cards Some ISA cards, both Legacy and PNP may also need to use a DMA (Direct Memory Access) channel. DMA assignments for this motherboard are handled the same way as the IRQ assignment process described above. You can select a DMA channel in the PCI and PNP configuration section of the BIOS Setup utility. In the BIOS setup, you should choose "Yes" for those IRQ's and DMA's you wish to reserve for Legacy cards. P/I-P55TP4N User's Manual 17

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
P/I-P55TP4N User's Manual
17
III. INSTALLATION
Diagnostic (MSD.EXE) utility included in the Windows directory to see a
map of your used and free IRQs.
For Windows 95 users, the "Control Panel"
icon in "My Computer," contains a "System" icon which gives you a "De-
vice Manager" tab.
Double clicking on a specific device give you "Re-
sources" tab which shows the Interrupt number and address.
Make sure that
no two devices use the same IRQs or your computer will experience prob-
lems when those two devices are in use at the same time.
To simplify this process this motherboard has complied with the Plug and
Play (PNP) specification which was developed to allow automatic system
configuration whenever a PNP-compliant card is added to the system.
For
PNP cards, IRQs are assigned automatically from those available.
If the system has both Legacy and PNP ISA cards installed, IRQs are as-
signed to PNP cards from those not used by Legacy cards.
The PCI and
PNP configuration of the BIOS setup utility can be used to indicate which
IRQs are being used by Legacy cards.
For older Legacy cards that does not
work with the BIOS, you can contact your vendor for an ISA Configuration
Utility.
An IRQ number is automatically assigned to PCI expansion cards after those
used by Legacy and PNP ISA cards.
In the PCI bus design, the BIOS auto-
matically assigns an IRQ to a PCI slot that has a card in it that requires an
IRQ.
To install a PCI card, you need to set something called the INT (inter-
rupt) assignment.
Since all the PCI slots on this motherboard use an
INTA #, be sure that the jumpers on your PCI cards are set to INT A.
Assigning DMA Channels for ISA Cards
Some ISA cards, both Legacy and PNP may also need to use a DMA (Direct
Memory Access) channel.
DMA assignments for this motherboard are
handled the same way as the IRQ assignment process described above.
You
can select a DMA channel in the PCI and PNP configuration section of the
BIOS Setup utility.
In the BIOS setup, you should choose "Yes" for those
IRQ's and DMA's you wish to reserve for Legacy cards.
(DMA Channels)
III.
INSTALLATION