
Intel®Desktop Board D865PERL Specification Update 
 
 
 
v
PREFACE 
This document is an update to the specifications contained in the
 Intel
 
®
 Desktop Board D865PERL Technical 
Product Specification
 (Order number C31764). It is intended for hardware system manufacturers and 
software developers of applications, operating systems, or tools. It will contain Specification Changes, Errata, 
Specification Clarifications, and Documentation Changes. 
Refer to the 
Intel
 
®
 Pentium
®
 4 Processor Specification Update
 (Order number 249199) for specification 
updates concerning the Intel Pentium 4 processor and that may apply to the desktop board D865PERL. 
Unless otherwise noted in this document, it should be assumed that any processor errata for a given stepping 
are applicable to the Altered Assembly (AA) revision(s) associated with that stepping. 
Refer to the 
Intel
 
®
 865PE Chipset: 82865PE Memory Controller Hub (MCH) Specification Update
 (Order 
Number 252523) for specification updates concerning the 82865PE MCH Controller and that may apply to the 
desktop board D865PERL. Unless otherwise noted in this document, it should be assumed that any MCH 
errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) associated with that 
stepping. 
Refer to the 
Intel
 
®
82801EB I/O Controller Hub (ICH5R) / 82801ER I/O Controller Hub (ICH5) Specification 
Update
 (Order Number 252517) for specification updates concerning the 82801ER I/O Controller Hub and 
that may apply to the desktop board D865PERL. Unless otherwise noted in this document, it should be 
assumed that any ICH 5 errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) 
associated with that stepping. 
Nomenclature 
Specification Changes are modifications to the current published specifications. These changes will be 
incorporated in the next release of the specifications. 
Errata are design defects or errors. Characterized errata may cause the desktop board D865PERL’s 
behavior to deviate from published specifications. Hardware and software designed to be used with any 
given Altered Assembly (AA) and BIOS revision level must assume that all errata documented for that AA 
and BIOS revision level are present on all desktop boards. 
Specification Clarifications describe a specification in greater detail or further highlight a specification’s 
impact to a complex design situation. These clarifications will be incorporated in the next release of the 
specifications. 
Documentation Changes include typos, errors, or omissions from the current published specifications. 
These changes will be incorporated in the next release of the specifications.