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2021

Introduction to DeviceTree

Introduction to DeviceTree
Introduction to DeviceTree

Devicetree is a representation of a hardware configuration, most especially non-discoverable hardware devices, passed from a bootstrap firm...

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7:00 AM
William Leara
0
misc
7:00 AM

UEFI Forum Switch to Causeway

UEFI Forum Switch to Causeway
UEFI Forum Switch to Causeway

For many years, the Members Area of UEFI.org has been managed by the Kavi Workspace/Higher Logic community management tool.  Recently (Se...

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7:00 AM
William Leara
0
misc, specifications
7:00 AM

Microsoft Project Mu — A Quick Start

Microsoft Project Mu — A Quick Start
Microsoft Project Mu — A Quick Start

Project Mu is a Microsoft-sponsored open-source UEFI BIOS implementation, complementing the original Tianocore open-source implementation....

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7:00 AM
William Leara
0
Microsoft
7:00 AM

ARM's SystemReady Specifications

ARM's SystemReady Specifications
ARM's SystemReady Specifications

The folks at ARM offer a certification program based on a set of hardware and firmware standards: the Base System Architecture (BSA), and B...

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11:53 PM
William Leara
0
ARM, specifications
11:53 PM

The UEFI 2.9 Specification

The UEFI 2.9 Specification
The UEFI 2.9 Specification

Forgive the delay in publishing, but I've been taking a paternity leave from work recently, and just now getting back into the swing of ...

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7:00 AM
William Leara
1
specifications
7:00 AM

Switching Email Subscriptions to Follow.It

Switching Email Subscriptions to Follow.It
Switching Email Subscriptions to Follow.It

Dear basicinputoutput.com readers: Just a brief administrative note to let my email subscribers know that I’ve switched from Feedburner to F...

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9:05 PM
William Leara
1
misc
9:05 PM
 
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welcome

Welcome to the Basic Input/Output website! Here I share things pertaining to the arcane art of PC BIOS development. For spice, I add material about software development in general and some interesting computer history vignettes. Please, try to contain your excitement!
—William Leara
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popular

  • UEFI Forum Updates All Specs, Dec 2024
    The UEFI Forum updated all three of its specifications in December, 2024:  ACPI, UEFI, and PI. As a refresher: Advanced Configuration and P...
  • RWEverything. Yes, Everything.
    I’ve done many tools reviews in the history of this web site, so it would be unthinkable to neglect to talk about what may be the biggest a...
  • The Keyboard Controller Interface, 0x60/0x64
    The original IBM PC (1981), and its immediate successor, the IBM PC/XT (1983), had keyboards limited to unidirectional communication:  data ...
  • JEDEC Manufacturer IDs Are a Mess
    The Vendor ID .  Seems like a pretty prosaic topic.  What's to say?  Every vendor has a numeric identifier that is globally unique so th...
  • Guide to the SWEBOK v4.0 Has Been Released
    The Guide to the Software Engineering Body of Knowledge (SWEBOK) v4.0 was released on October 15, 2024. The Guide is a publication of the ...
  • Pete Batard's Resource for UEFI Shells
    Sometimes you'd like to do some work in the UEFI Shell, but you don't have one installed on a USB flash drive that's handy. Or ,...

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archive

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      • Introduction to DeviceTree
    • ►  September (2)
      • UEFI Forum Switch to Causeway
      • Microsoft Project Mu — A Quick Start
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      • ARM's SystemReady Specifications
      • The UEFI 2.9 Specification
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      • Switching Email Subscriptions to Follow.It
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latest UEFI specs

  • UEFI Spec 2.11
  • UEFI PI Spec 1.9
  • ACPI 6.5a

UEFI resources

  • presentations, podcasts, videos
  • white papers

UEFI blog roll

  • BIOS on StackOverflow
    Issue with Ubuntu Installation - No Bootable Device and BIOS Password Lock [closed]
  • Vincent Zimmer's blog
    April showers....

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