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Content Tagged "asm"

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Content Tagged "asm"

BIOS Loads from 0x7c00

September 21, 2016Categories: Software, Tutorial
Today I was investigating a bug where a simple program wasn't executing properly. It emerged that BIOS loads the code from the MBR at 0x7c00 . Relevant info reproduced here: The (legacy) BIOS checks bootable devices for a boot signature, a so called magic number. The boot signature is in a boot…

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