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SMBIOS v3.6.0 Now Released

SMBIOS v3.6.0 Now Released
SMBIOS v3.6.0 Now Released

On June 21, 2022, the DMTF released SMBIOS Spec version 3.6.0. The new SMBIOS Spec is available for download here: https://www.dmtf.org/sit...

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

OsIndications, OsIndicationsSupported

OsIndications, OsIndicationsSupported
OsIndications, OsIndicationsSupported

In my last article, I discussed an old, but still active, mechanism for Windows and BIOS to communicate with each other regarding boot confi...

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7:24 AM
William Leara
0
misc
7:24 AM

Introduction to the Simple Boot Flag

Introduction to the Simple Boot Flag
Introduction to the Simple Boot Flag

The Simple Boot Flag , it turns out, is a bit of a mystery.  Trying to find information about this flag, and/or its associated specification...

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12:14 PM
William Leara
5
Microsoft, misc
12:14 PM

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
 
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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

  • 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 ...
  • AMD openSIL
    AMD 's  Open Silicon Initialization Library ( openSIL ) is a new initiative, currently underway, that has the following goals: replace t...
  • 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...
  • The Binwalk Firmware Analysis Tool
    I’ve recently been experimenting with a wicked-fun tool you may find useful called Binwalk :  a “fast, easy to use tool for analyzing and ex...
  • EDID and DisplayID
    In " The Before Times" (think: 1980s), there was no way for graphics adapters and monitors to negotiate a common set of supported...

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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
    How to make a simple BIOS from the grund up [closed]
  • Vincent Zimmer's blog
    IPv6 Crosses 50% — Technology Diffusion Takes Longer Than You Think

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