Deprecated

This page aims to cover links to information that has been removed from various documents but which may still be relevant for the purpose of backwards compatibility. It does not explain which technologies deprecate which, only variations between versions of a particular technology.

Intel SDM

Item	Where to find	Comments
Intel486/Pentium test registers (TR3..TR7)	Pentium MMX SDM (description, no instruction encodings) IA-32 SDM Vol. 2B Sept. 2005 (instruction encodings)	Cache testing is performed via MSRs on newer CPUs.

UEFI specification

Item	Where to find	Comments
Device I/O Protocol	EFI 1.10 specification	Replaced by PCI Root Bridge I/O protocols.
UGA I/O + UGA Draw Protocol	EFI 1.10 specification	Replaced by EFI Graphics Output Protocol.
USB Host Controller Protocol	EFI 1.10 specification	Replaced by USB2 Host Controller Protocol.
SCSI Passthru Protocol	EFI 1.10 specification	Replaced by Extended SCSI Passthru Protocol.
Driver Configuration Protocol	UEFI 2.0 specification (including versions with errata applied)	Removed in favour of a different mechanism.

SMBIOS specification

Item	Where to find	Comments
Plug-and-Play function interface	SMBIOS 2.6.1 specification	Replaced by a table-based method.