B&R Industries Provit 5000 User Manual - page 298
Provit 5000 User’s Manual
297
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Software • BIOS for System Unit with Socket 370
Reset Configuration Data
Normally you leave this setting disabled. When Enabled, an update of the
Extended System Configuration Data (ESCD) is carried out after exiting the BIOS
Setup. This may be necessary for booting problems resulting from installation of
new hardware components.
IRQ-n Assigned to / DMA-n Assigned to
The settings "Legacy ISA" and PCI/ISA PnP are possible.
Legacy ISA is used, if ISA devices require a special interrupt or a special DMA
channel. Plug & Play compatible devices work with the PCI/ISA PnP setting.
PCI IDE IRQ Map to
This field lets you select PCI IDE IRQ mapping or PC AT (ISA) interrupts.
If your system does not have one or two PCI IDE connectors on the system board,
select values according to the type of IDE interface(s) installed in your system
(PCI or ISA).
Standard settings for ISA interrupts on IDE channels: IRQ14 for the primary
channel and IRQ15 for the secondary channel.
Primary/Secondary IDE INT#
Only appears if the value ISA is not entered in the field PCI IDE IRQ Map to.
Each PCI peripheral connection is capable of activating up to four interrupts: INT#
A, INT# B, INT# C and INT# D. By default, a PCI connection is assigned INT# A.
Assigning INT# B has no meaning unless the peripheral device requires two
interrupt services instead of just one. For example, if the PCI IDE interface in the
chipset has two channels, it then requires two interrupt services. The primary and
secondary IDE INT# fields default to values appropriate for two PCI IDE channels,
with the primary PCI IDE channel having a lower interrupt than the secondary.
Used MEM Base Addr
This option makes it possible to reserve a main memory window in the upper
memory area, e.g. for some older ISA network cards. If a starting address is
specified instead of N/A (not available), the option Used MEM Length can be used
to set the size of the memory area required.