• RSS
  • Twitter
  • LinkedIn
Basic Input/Output

Basic Input/Output

Powered by Blogger.
Menu
  • Home
  • About Me
  • Computer Chronicles
  • Jobs!
  • Patreon
Grid List

PCIe Gen7 is Here!

PCIe Gen7 is Here!
PCIe Gen7 is Here!

On June 11, 2025, PCI-SIG launched PCIe Version 7.0!  The specification is available for download by PCI-SIG members . PCI-SIG has taken a ...

Read more »
5:11 PM
William Leara
0
PCI, specifications
5:11 PM

Introduction to PlantUML

Introduction to PlantUML
Introduction to PlantUML

Introduction PlantUML is an open-source tool that allows users to create diagrams using plain text.  Although its name includes the acronym ...

Read more »
8:00 AM
William Leara
0
tools
8:00 AM

Open Source Firmware Conference and UEFI Plugfest

Open Source Firmware Conference and UEFI Plugfest
Open Source Firmware Conference and UEFI Plugfest

Some exciting news from the firmware conference scene.  In a first, the Open Source Firmware Conference (OSFC) approached the UEFI Forum a...

Read more »
8:00 AM
William Leara
0
conferences
8:00 AM

Pete Batard's Resource for UEFI Shells

Pete Batard's Resource for UEFI Shells
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 ,...

Read more »
1:12 PM
William Leara
0
EDK
1:12 PM
 
Newer Posts Older Posts Home
Subscribe to: Posts (Atom)

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
  • Populars
  • Comments
  • Archive

popular

  • 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 ...
  • Reverse Engineering UEFI with Ghidra
    Ghidra is a free and open-source tool for software reverse engineering.  It is extensible, and allows for application-specific capabilities...
  • Introduction to Open Platform Firmware
    Platform firmware development faces a fundamental challenge: every silicon vendor brings its own initialization model, configuration schem...
  • 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 ...

comments

archive

  • ▼  2026 (3)
    • ▼  June (1)
      • Introduction to Open Platform Firmware
    • ►  March (1)
    • ►  February (1)
  • ►  2025 (6)
    • ►  July (1)
    • ►  May (2)
    • ►  April (1)
    • ►  February (1)
    • ►  January (1)
  • ►  2024 (12)
    • ►  December (1)
    • ►  November (2)
    • ►  October (2)
    • ►  September (1)
    • ►  July (1)
    • ►  May (1)
    • ►  April (1)
    • ►  March (1)
    • ►  February (1)
    • ►  January (1)
  • ►  2023 (9)
    • ►  December (1)
    • ►  November (1)
    • ►  October (2)
    • ►  August (1)
    • ►  May (1)
    • ►  April (2)
    • ►  March (1)
  • ►  2022 (4)
    • ►  September (1)
    • ►  June (1)
    • ►  April (2)
  • ►  2021 (6)
    • ►  October (1)
    • ►  September (2)
    • ►  August (2)
    • ►  July (1)
  • ►  2020 (2)
    • ►  April (1)
    • ►  January (1)
  • ►  2019 (15)
    • ►  November (1)
    • ►  October (5)
    • ►  September (1)
    • ►  July (1)
    • ►  June (2)
    • ►  May (2)
    • ►  March (1)
    • ►  February (1)
    • ►  January (1)
  • ►  2018 (11)
    • ►  December (2)
    • ►  November (3)
    • ►  October (2)
    • ►  June (1)
    • ►  April (2)
    • ►  March (1)
  • ►  2017 (13)
    • ►  November (1)
    • ►  September (2)
    • ►  August (3)
    • ►  July (2)
    • ►  June (3)
    • ►  May (1)
    • ►  April (1)
  • ►  2016 (23)
    • ►  November (1)
    • ►  October (2)
    • ►  September (1)
    • ►  August (2)
    • ►  July (3)
    • ►  June (2)
    • ►  May (2)
    • ►  April (3)
    • ►  March (4)
    • ►  February (1)
    • ►  January (2)
  • ►  2015 (20)
    • ►  December (2)
    • ►  June (4)
    • ►  May (4)
    • ►  April (3)
    • ►  March (4)
    • ►  February (3)
  • ►  2014 (17)
    • ►  December (1)
    • ►  October (4)
    • ►  September (3)
    • ►  August (9)

subscribe via email

tags

ACPI (1) AMD (3) ANTLR (1) Apple (3) ARM (1) books (3) boot (2) C64 (1) coding standards (2) Commodore (2) Computer Chronicles (11) conferences (12) CP/M (1) CPU (2) Data General (1) EC (3) EDK (15) GaryKildall (1) graphics (1) HII (1) history (6) IBM (2) Intel (12) jobs (1) Linux (1) M.2 (1) manageability (4) memory (2) Microsoft (5) misc (18) networking (1) PCI (5) pretty print (1) Redfish (1) RTOS (2) security (11) setup (1) smbios (6) specifications (20) storage (3) testing (5) tools (18) USB (1) VCS (2) VFR (1) Windows (3) Zephyr (2)
 

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

  • Vincent Zimmer's blog
    20 years of beyond bios
  • BIOS on StackOverflow
    Why load the value “01301h” into AX before invoking interrupt 10h?

translate

© Copyright 2025 William Leara. All Rights Reserved.