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Intel® Server Board SE7501WV2 TPS BIOS
Revision 1.0
Intel reference number C25653-001
75
• Advanced Configuration and Power Interface Specification
• PCI Local Bus Specification
• PCI BIOS Specification
• System Management BIOS Reference Specification
In addition, refer to the relevant sections of the following specifications:
• Extended System Configuration Data Specification
• Plug and Play ISA Specification
• Plug and Play BIOS Specification
6.5.1 Resource Allocation
The system BIOS identifies, allocates, and initializes resources in a manner consistent with
other Intel
®
servers. The BIOS scans for the following, in order:
1. ISA devices: Although add-in ISA devices are not supported on these systems, some
standard PC peripherals may require ISA-style resources. Resources for these devices
are reserved as needed.
2. Add-in video graphics adapter (VGA) devices: If found, the BIOS initializes and allocates
resources to these devices.
3. PCI devices: The BIOS allocates resources according to the parameters set up by the
System Setup Utility and as required by the PCI Local Bus Specification, Revision 2.2
and PCI –X Addendum to the PCI Local Bus Specification, Revision 1.0a.
The system BIOS Power-on Self Test (POST) guarantees there are no resource conflicts prior
to booting the system. Note that PCI device drivers must support sharing IRQs, which should
not be considered a resource conflict. Only four legacy IRQs are available for use by PCI
devices. Therefore, most of the PCI devices share legacy IRQs. In SMP mode, the I/O APICs
are used instead of the legacy “8259-style” interrupt controller. There is very little interrupt
sharing in SMP mode.
6.5.2 PnP ISA Auto-Configuration
The system BIOS does the following:
• Supports relevant portions of the Plug and Play ISA Specification, Revision 1.0a and the
Plug and Play BIOS Specification, Revision 1.0A.
• Assigns I/O, memory, direct memory access (DMA) channels, and IRQs from the system
resource pool to the embedded PnP Super I/O device.
Add-in PnP ISA devices are not supported.