Intel SE7501WV2 User Manual

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Advanced Configuration and Power Interface Specification 

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PCI Local Bus Specification 

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In addition, refer to the relevant sections of the following specifications: 

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Extended System Configuration Data Specification 

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Plug and Play ISA Specification 

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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. 

The system BIOS does the following: 

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Supports relevant portions of the Plug and Play ISA Specification, Revision 1.0a and the 
Plug and Play BIOS Specification, Revision 1.0A. 

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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.