Acer Altos 1100 Acer Altos 1100 User's Guide - Page 74

PCI Device Latency Timer, PCI IRQ Sharing, Onboard LAN

Get Acer Altos 1100 PDF manuals and user guides View all Acer Altos 1100 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 74 highlights

Make sure that the interrupt you assign to the various PCI slots are not used by other devices to avoid conflicts. Press or to move between fields. Press or to select options. AGP This item shows the assigned interrupt for the onboard accelerated graphics port (AGP) controller. Onboard LAN This item allows you to manually assign the interrupt for the onboard LAN when the PCI IRQ Setting parameter is set to Manual. This parameter is grayed and not user-configurable when the PCI IRQ Setting is set to Auto. PCI Device Latency Timer This parameter allows you to set the length of time for a PCI device to use the PCI bus. A PCI master can burst indefinitely as long as the target can source/sink the data, and no other agent requests for the bus. If another PCI device requests for the use of the PCI bus, a PCI bus arbitration takes place, and the tenure of the device currently using the PCI bus cannot go over the PCI latency time set in BIOS. This setting depends on your application. For example, if you install a high bandwidth block I/O card, e.g., FDDI, the longer the latency time the better. This setting only affects the primary PCI components (PCI slots 1, 2, 3, 4, and onboard LAN). The secondary PCI components (PCI slots 4) are always set to 20 PCI clocks. The default setting is 20. PCI IRQ Sharing Setting this parameter to Yes allows you to assign the same IRQ to two different devices. To disable the feature, select No. The default setting is No. 2-32 Altos 1100 Series User's Guide

  • 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
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
Altos 1100 Series User’s Guide
2-32
Make sure that the interrupt you assign to the
various PCI slots are not used by other
devices to avoid conflicts.
Press
or
to move between fields.
Press
or
to select options.
AGP
This item shows the assigned interrupt for the onboard accelerated graphics port
(AGP) controller.
Onboard LAN
This item allows you to manually assign the interrupt for the onboard LAN when
the PCI IRQ Setting parameter is set to
Manual
. This parameter is grayed and not
user-configurable when the PCI IRQ Setting is set to
Auto
.
PCI Device Latency Timer
This parameter allows you to set the length of time for a PCI device to use the PCI
bus.
A PCI master can burst indefinitely as long as the target can source/sink the data,
and no other agent requests for the bus.
If another PCI device requests for the
use of the PCI bus, a PCI bus arbitration takes place, and the tenure of the device
currently using the PCI bus cannot go over the PCI latency time set in BIOS.
This
setting depends on your application.
For example, if you install a high bandwidth block I/O card, e.g., FDDI, the
longer the latency time the better.
This setting only affects the primary PCI
components (PCI slots 1, 2, 3, 4, and onboard LAN).
The secondary PCI
components (PCI slots 4) are always set to 20 PCI clocks. The default setting is
20
.
PCI IRQ Sharing
Setting this parameter to
Yes
allows you to assign the same IRQ to two different
devices.
To disable the feature, select
No
.
The default setting is
No
.