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August 2023

Software Bill of Materials (SBOM) in Practice

Software Bill of Materials (SBOM) in Practice
Software Bill of Materials (SBOM) in Practice

On May 12, 2021, U.S. President Joe Biden issued the  Executive Order on Improving the Nation’s Cybersecurity .  ( Executive Order 14028 )  ...

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William Leara
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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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  • 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...
  • 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...
  • 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...
  • 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...
  • 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 ...
  • A Tour of Intel CHIPSEC
    CHIPSEC is a framework for analyzing the security of PC platforms, including their hardware, BIOS, and platform configuration.  It includes...

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latest UEFI specs

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

UEFI resources

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  • white papers

UEFI blog roll

  • BIOS on StackOverflow
    Arch-hyprland boots only when plugged-in in dell lattitude 3400 [migrated]
  • Vincent Zimmer's blog
    early career aspirations

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