docs: Update with acronyms found in 4.20-4.21 commit messages
Signed-off-by: Martin Roth <gaumless@gmail.com> Change-Id: I19a69ffdf2c248223569153c00fbc76d5ceb7921 Reviewed-on: https://review.coreboot.org/c/coreboot/+/77382 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
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Felix Singer
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# Firmware and Computer Acronyms, Initialisms and Definitions
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** Note that this document even more of a work in progress than most **
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** of the coreboot documentation **
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## _0-9
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@ -20,7 +18,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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initialization that happens from the PSP. Significantly, Memory
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Initialization.
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* AC - Electricity: [**Alternating Current**](https://en.wikipedia.org/wiki/Alternating_current)
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* Ack - Acknowledgment
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* Ack - Acknowledgment / Acknowledged
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* ACM – [**Authenticated Code Module**](https://doc.coreboot.org/security/intel/acm.html)
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* ACP - [**Average CPU power**](https://en.wikipedia.org/wiki/Thermal_design_power)
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* ACPI - The [**Advanced Configuration and Power
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@ -31,6 +29,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* ADC - [**Analog-to-Digital Converter**](https://en.wikipedia.org/wiki/Analog-to-digital_converter)
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* ADL - Intel: [**Alder Lake**](https://en.wikichip.org/wiki/intel/microarchitectures/alder_lake)
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* AES - [**Advanced Encryption Standard**](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard)
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* AESKL - Intel: AES Key Locker
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* AGESA - [**AMD Generic Encapsulated Software Architecture**](https://en.wikipedia.org/wiki/AGESA_)
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* AGP - The [**Accelerated Graphics
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Port**](http://en.wikipedia.org/wiki/Accelerated_Graphics_Port) is an
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@ -51,6 +50,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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An open standard to connect and manage functional blocks in an SoC
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(System on a Chip)
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* AMD64 - Another name for [**x86-64**](https://en.wikipedia.org/wiki/X86-64)
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* AMD-Vi AMD: The AMD name for their IOMMU implementation
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* AMPL - AMD: [**Advanced Platform Management Link**](https://web.archive.org/web/20220509053546/https://developer.amd.com/wordpress/media/2012/10/419181.pdf) - Also referred to as
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SBI: Sideband Interface
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* AMT - Intel: [**Active Management Technology**](https://en.wikipedia.org/wiki/Intel_Active_Management_Technology)
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@ -207,6 +207,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* CSME - Intel: Converged Security and Management Engine
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* CTLE - Intel: Continuous Time Linear Equalization
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* CVE - [**Common Vulnerabilities and Exposures**](https://en.wikipedia.org/wiki/Common_Vulnerabilities_and_Exposures)
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* CXMT - ChangXin Memory Technologies
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* CZN - AMD: [**Cezanne**](https://en.wikichip.org/wiki/amd/cores/cezanne) - CPU Family 19h, Model 50h
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@ -227,6 +228,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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the device.
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* DASH - [**Desktop and mobile Architecture for System Hardware**](Desktop_and_mobile_Architecture_for_System_Hardware)
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* DB - DaughterBoard
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* DbC - USB: Debug Capability on the USB host controller
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* DC - Electricity: Direct Current
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* DCP - Digital Content Protection
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* DCR - **Decode Control Register** This is a way of identifying the
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@ -259,6 +261,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* DOS - Disk Operating System
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* DP - DisplayPort
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* DPM - Mediatek: DRAM Power Manager
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* DPTC - AMD: Dynamic Power and Thermal Control
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* DPTF - Intel: Dynamic Power and Thermal Framework
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* DRAM - Memory: [**Dynamic Random Access Memory**](https://en.wikipedia.org/wiki/Dynamic_random-access_memory)
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* DRTM - Dynamic Root of Trust for Measurement
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@ -285,6 +288,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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vs Integrated TPMs or fTPMs (Firmware TPMs).
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* DTS - U-Boot: Device Tree Source
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* DUT - Device Under Test
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* DvC - USB: Debug Capability on the USB Device (Device Capability)
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* DVFS - ARM: Dynamic Voltage and Frequency Scaling
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* DVI - [**Digital Video Interface**](https://en.wikipedia.org/wiki/Digital_Visual_Interface)
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* DVT - Production Timeline: Design Validation Test
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@ -297,12 +301,13 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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## E
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* EAPD - Intel: [**External Amplifier Power Down**](https://web.archive.org/web/20210203194800/https://www.eeweb.com/hd-audio-eapd/)
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* EBDA - Extended BIOS Data Area
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* EBG - Intel: Emmitsburg PCH
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* ECC - [**Error Correction Code**](https://en.wikipedia.org/wiki/Error_correction_code) - Typically used to refer to a type of
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memory that can detect and correct memory errors.
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* EDID - [**Extended Display Identification Data**](https://en.wikipedia.org/wiki/Extended_Display_Identification_Data)
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* edk2 - EFI Development Kit 2
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* EDK2 - EFI Development Kit 2
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* EDO - Memory: [**Extended Data
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Out**](https://en.wikipedia.org/wiki/Dynamic_random-access_memory#Extended_data_out_DRAM)
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- A DRAM standard introduced in 1994 that improved upon, but was
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@ -324,6 +329,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* EOL - End of Life
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* EPP - Intel: Energy-Performance Preference
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* EPROM - Erasable Programmable Read-Only Memory
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* EROFS - Linux: [**Enhanced Read-Only File System**](https://en.wikipedia.org/wiki/EROFS)
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* ESD - Electrostatic discharge
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* eSPI - Enhanced System Peripheral Interface
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* EVT - Production Timeline: Engineering Validation Test
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@ -334,6 +340,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* FADT - ACPI Table: Fixed ACPI Description Table
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* FAE - Field Application Engineer
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* FAT - File Allocation Table
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* FBVDDQ - Nvidia Power: Framebuffer Voltage
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* FCH - AMD: Firmware Control Hub
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* FCS - Production Timeline: First Customer Shipment
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* FDD - Floppy Disk Drive
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@ -363,12 +370,15 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* FPM - Memory: [**Fast Page Mode**](https://en.wikipedia.org/wiki/Dynamic_random-access_memory#Page_mode_DRAM) - A DRAM standard introduced in 1990.
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* FPU - [**Floating-Point Unit**](https://en.wikipedia.org/wiki/Floating-point_unit)
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* FSB - [**Front-Side Bus**](https://en.wikipedia.org/wiki/Front-side_bus)
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* FSM - Finite State Machine
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* FSP - Intel: Firmware Support Package
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* FSR - Intel: Firmware Status Register
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* FTP - Network Protocol: [**File Transfer Protocol**](https://en.wikipedia.org/wiki/File_Transfer_Protocol)
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* fTPM - Firmware TPM (Trusted Platform Module). This is a TPM that is
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based in firmware instead of actual hardware. It typically runs in
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some sort of TEE (Trusted Execution Environment).
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* FWCM Intel: firmware Connection Manager
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* FWID - Firmware Identifier
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## G
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@ -389,6 +399,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* GMA - Intel: [**Graphics Media
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Accelerator**](https://en.wikipedia.org/wiki/Intel_GMA)
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* GNB - Graphics NorthBridge
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* GND - Power: Ground
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* GNVS - Global Non-Volatile Storage
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* GPD - PCH GPIO in Deep Sleep well (D5 power)
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* GPE - ACPI: General Purpose Event
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@ -405,23 +416,28 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* GSC - Google Security Chip - Typically Cr50/Ti50, though could also refer to the titan chips
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* GSPI - Generic SPI - These are SPI controllers available for general
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use, not dedicated to flash, for example.
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* GTDT - ACPI: Generic Timer Description Table
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* GTT - [**Graphics Translation Table**](https://en.wikipedia.org/wiki/Graphics_address_remapping_table)
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* GUID - UEFI: [**Globally Unique IDentifier**](https://en.wikipedia.org/wiki/Universally_unique_identifier)
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## H
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* HBP - Graphics: [**Horizontal Back Porch**](https://en.wikipedia.org/wiki/Horizontal_blanking_interval) In the Horizontal blanking interval, this is the blank area past the end of the scanline
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* HDA - [**High Definition Audio**](https://en.wikipedia.org/wiki/Intel_High_Definition_Audio)
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* HDCP - [**High-bandwidth Digital Content Protection**](https://en.wikipedia.org/wiki/High-bandwidth_Digital_Content_Protection)
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* HDD - Hard Disk Drive
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* HDMI - [**High-Definition Multimedia Interface**](https://en.wikipedia.org/wiki/HDMI)
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* HDR - [**High Dynamic Range**](https://en.wikipedia.org/wiki/High_dynamic_range)
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* HECI - Intel: [**Host Embedded Controller Interface**](https://en.wikipedia.org/wiki/Host_Embedded_Controller_Interface) (Replaced by MEI)
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* HFP - Graphics: [**Horizontal Front Porch**](https://en.wikipedia.org/wiki/Horizontal_blanking_interval) In the Horizontal blanking interval, this is the blank before the start of the next scanline.
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* HID - [**Human Interface
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Device**](https://en.wikipedia.org/wiki/Human_interface_device)
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* HOB - UEFI: Hand-Off Block
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* HPD - Hot-Plug Detect
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* HPET - [**High Precision Event Timer**](https://en.wikipedia.org/wiki/High_Precision_Event_Timer)
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* HSP - AMD: Hardware Security Processor
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* HSPHY - USB: USB3 High-Speed PHY
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* HSTI - Hardware Security Test Interface
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* HSW - Intel: Haswell
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* Hybrid S3 - System Power State: This is where the operating system
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@ -451,6 +467,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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- Also known as SenseWire
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* IA - Intel Architecture
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* IA-64 - Intel Itanium 64-bit architecture
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* IAFC - RISC-V: [**RISC-V Base Integer instruction set**](https://en.wikipedia.org/wiki/RISC-V), plus atomic instructions, single precision floating point instructions, and compressed instructions
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* IBB – Initial Boot Block
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* IBV - Independent BIOS Vendor
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* IC - Integrated Circuit
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@ -468,6 +485,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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Fabric**](https://en.wikipedia.org/wiki/HyperTransport#Infinity_Fabric)
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is a superset of AMD's earlier Hypertransport interconnect.
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* IFD - Intel: Intel Flash Descriptor
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* IMAFC - RISC-V: [**RISC-V Base Integer instruction set**](https://en.wikipedia.org/wiki/RISC-V), plus integer multiply & divide, atomic instructions, single precision floating point instructions, and compressed instructions
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* IMC - AMD: Integrated micro-controller - An 8051 microcontroller built
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into some AMD FCHs (Fusion Controller Hubs) and Southbridge chips.
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This never worked well for anything beyond fan control and caused
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@ -479,6 +497,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* IoC - Security: Indicator of Compromise
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* IOC - Intel: I/O Cache
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* IOE - Intel: I/O Expander
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* IOHC - AMD: I/O Hub Controller
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* IOM - Intel: I/O Manager
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* IOMMU - [**I/O Memory Management Unit**](https://en.wikipedia.org/wiki/Input%E2%80%93output_memory_management_unit)
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* IOMUX - AMD: The I/O Mux block controls how each GPIO is configured.
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@ -579,12 +598,14 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* MBR - Master Boot Record
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* MCA - [**Machine Check Architecture**](https://en.wikipedia.org/wiki/Machine_Check_Architecture)
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* MCR - Machine Check Registers
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* MCTP - [**Management Component Transport Protocol**](https://en.wikipedia.org/wiki/Management_Component_Transport_Protocol)
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* MCU - Memory Control Unit
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* MCU - [**MicroController
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Unit**](https://en.wikipedia.org/wiki/Microcontroller)
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* MCTP - [**Management Component Transport Protocol**](https://en.wikipedia.org/wiki/Management_Component_Transport_Protocol)
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* MCUPM - Mediatek: MCUPM is a hardware module which is used for MCUSYS Power Management. MCUPM firmware (mcupm.bin) is loaded into MCUPM SRAM at system initialization.
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* MDFIO - Intel: Multi-Die Fabric IO
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* MDN - AMD: Mendocino
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* mDP - Mini DisplayPort connector
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* ME - Intel: Management Engine
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* MEI - Intel: ME Interface (Previously known as HECI)
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* Memory training - the process of finding the best speeds, voltages,
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@ -628,7 +649,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* MSB - Most Significant Bit
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* MSI - Message Signaled Interrupt
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* MSR - Machine-Specific Register
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* MT/s - MegaTransfers per second
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* MTS or MT/s - MegaTransfers per second
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* MTL - Intel: Meteor Lake
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* MTL - ARM: MHU Transport Layer
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* MTRR - [**Memory Type and Range Register**](http://en.wikipedia.org/wiki/MTRR)
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@ -638,6 +659,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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are specified over physical address ranges. In Linux, they are visible
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over `/proc/mtrr` and they can be modified there. For further
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information, see the [**Linux documentation**](https://www.kernel.org/doc/html/v5.19/x86/pat.html).
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* MXM - PCIe: [**Mobile PCI Express Module**](https://en.wikipedia.org/wiki/Mobile_PCI_Express_Module)
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## N
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@ -663,6 +685,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* NVME - Non-Volatile Memory Express - An SSD interface that allows
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access to the flash memory through a PCIe bus.
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* NVPCF - Nvidia Platform and Control Framework
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* NVVDD - Nvidia Power: Core voltage
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* NX - No Execute
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@ -732,6 +755,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* PEI - UEFI: Pre-EFI Initialization
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* PEIM - UEFI: PEI Module
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* PEP - Intel: Power Engine Plug-in
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* PEXVDD - Nvidia Power: PCIExpress Voltage
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* PHX - AMD: Phoenix SoC
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* PHY - [**PHYsical layer**](http://en.wikipedia.org/wiki/PHY) - The
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hardware that implements the send/receive functionality of a
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@ -783,6 +807,8 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* PSF - Intel: Primary Sideband Fabric
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* PSP - AMD: Platform Security Processor
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* PSPP - AMD: PCIE Speed Power Policy
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* PSR - Intel: Platform Service Record
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* PSR - Graphics: Panel Self-Refresh - This is a power-savings feature specified in eDP
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* PTT - Intel: Platform Trust Technology - Intel's firmware based TPM.
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* PU - GPIOs: Pull-Up - Drives the pin to reference voltage through a
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resistor. The resistor allows the signal to still be set to ground
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@ -809,6 +835,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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a set of 3 or 4 GPIOs to allow 8 to 16 different memory chips to be
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used.
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* RAPL - Running Average Power Limit
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* RCB - PCIe: Read Completion Boundary - Sets the address alignment on which a read request may be serviced with multiple completions
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* RCS - [**Revision control
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system**](https://en.wikipedia.org/wiki/Revision_Control_System)
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* Real mode - The original 20-bit addressing mode of the 8086 & 8088
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@ -829,6 +856,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* ROM - Read Only Memory
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* RoT - Root of Trust
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* RPL - Intel: [**Raptor Lake**](https://en.wikipedia.org/wiki/Raptor_Lake)
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* RPP - Intel: Raptor Point PCH
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* RRG - AMD (ATI): Register Reference Guide
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* RSDP - Root System Description Pointer
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* RTC - Real Time Clock
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@ -920,6 +948,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* SMBus - [**System Management
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Bus**](https://en.wikipedia.org/wiki/System_Management_Bus)
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* [http://www.smbus.org/](http://www.smbus.org/)
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* SME - AMD: Secure Memory Encryption
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* SMI - System management interrupt
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* SMM - [**System management
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mode**](https://en.wikipedia.org/wiki/System_Management_Mode)
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@ -958,6 +987,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* SSI-TEB - Physical board format: [**SSI Thin Electronics
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Bay**](https://en.wikipedia.org/wiki/SSI_CEB)
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* SSP - [**Speech Signal Processor**](https://en.wikipedia.org/wiki/Speech_processing)
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* SSPHY - USB: USB3 Super-Speed PHY
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* STAPM - AMD: Skin Temperature Aware Power Management
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* STB - AMD: Smart Trace Buffer
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* SuperIO - The [**Super I/O**](https://en.wikipedia.org/wiki/Super_I/O)
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@ -965,13 +995,16 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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peripherals. Most common are: A PS/2 Keyboard and mouse port, LPT
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Ports, UARTS, Watchdog Timers, Floppy drive Controllers, GPIOs, or any
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of a number of various other devices.
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* SVC - ARM: Supervisor Call
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* SVI2/3 - Serial VID (Voltage Identification) Interface 2.0 / 3.0
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* SWCM - Intel: Software Connection Manager
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## T
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* TBT - Thunderbolt
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* TBT - Intel: Turbo Boost Technology
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* tBUF - I2C: The bus free time between a STOP and START condition
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* TCC - Intel: Thermal Control Circuit
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* TCP - Transmission Control Protocol
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* TCPC - Type C Port Controller
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@ -1013,6 +1046,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* uCode - [**Microcode**](https://en.wikipedia.org/wiki/Microcode)
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* UDK - UEFI: UEFI Development Kit
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* UDP - User Datagram Protocol
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* UDMA - ATA: [**Ultra DMA**](https://en.wikipedia.org/wiki/UDMA) - The fastest transfer mode for ATA Hard Drives
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* UEFI - Unified Extensible Firmware Interface
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* UFC - User Facing Camera
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* UFP - USB: Upstream Facing Port
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@ -1030,6 +1064,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* UPS - Uninterruptible Power Supply
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* USART - Universal Synchronous/Asynchronous Receiver/Transmitter
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* USB - Universal Serial Bus
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* USF - Intel: Universal Scalable Firmware
|
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## V
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@ -1038,6 +1073,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* VBNV - Vboot Non-Volatile storage
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* VBT - [**Video BIOS
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Table**](https://www.kernel.org/doc/html/latest/gpu/i915.html#video-bios-table-vbt)
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* VDDQ Memory/Power: The supply voltage to the output buffers of a memory chip.
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* VESA - Video Electronics Standards Association
|
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* VGA: Video Graphics Array
|
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* VID: Vendor Identifier
|
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|
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@ -1045,12 +1081,17 @@ Spec](https://uefi.org/specifications) for details, or run the tool
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* VLB - VESA Local Bus
|
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* VOIP - Voice over IP
|
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* Voodoo mode - a silly name for Big Real mode.
|
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* VMX - Intel: CPU flag for Hardware Virtualization
|
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* VPD - Vital Product Data
|
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* VPN - Virtual Private Network
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* VPU - Intel: Versatile Processor Unit
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* VR - Voltage Regulator
|
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* VRAM - Video Random Access Memory
|
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* VREF Memory/Power: Reference voltage for the input lines of a chip that determines the voltage level at which the threshold between a logical 1 and a logical 0 occurs. Usually 1/2 VDDQ.
|
||||
* VRM - Voltage Regulator Module
|
||||
* VT-d - Intel: Virtualization Technology for Directed I/O
|
||||
* VTT Memory/Power: Tracking Termination Voltage
|
||||
* vUART - Virtual UART
|
||||
|
||||
|
||||
## W
|
||||
|
|
@ -1068,6 +1109,7 @@ Spec](https://uefi.org/specifications) for details, or run the tool
|
|||
* WLAN - Wireless LAN (Local Area Network)
|
||||
* WWAN - Telecommunication: Wireless WAN (Wide Area Network)
|
||||
* WP - Cache policy: [**Write-Protected**](https://en.wikipedia.org/wiki/Cache_%28computing%29)
|
||||
* WPT - Intel: Wildcat Point - PCH for Broadwell
|
||||
* WO - Write-only
|
||||
* WOL - [**Wake-on-LAN**](https://en.wikipedia.org/wiki/Wake-on-LAN)
|
||||
* WT - Cache Policy: [**Write Through**](https://en.wikipedia.org/wiki/Cache_%28computing%29)
|
||||
|
|
@ -1088,9 +1130,10 @@ Spec](https://uefi.org/specifications) for details, or run the tool
|
|||
supporting 1.x, 2.0, and 3.x devices.
|
||||
|
||||
|
||||
|
||||
## Y
|
||||
|
||||
* YCC - Color Space: [**YCbCr**](https://en.wikipedia.org/wiki/YCbCr) - A family of color spaces used in video
|
||||
|
||||
|
||||
## Z
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue