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September 2024

From .c to SPI: How Code Becomes Firmware

From .c to SPI:  How Code Becomes Firmware
From .c to SPI: How Code Becomes Firmware

There is a long and complex series of steps that turn your EFI source code into bits sitting on a SPI part.  Ever wonder how that works?  I ...

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9:57 AM
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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latest UEFI specs

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  • UEFI PI Spec 1.9
  • ACPI 6.5a

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  • BIOS on StackOverflow
    MBR works in QEMU/BOCHS but not on real hardware
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