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A Computers ROM BIOS's primary 'responsibility' is to identify the components attached to the Mother Board, assign them IRQ's (Interrupt Request lines), and then perform the POST (Power On Self Test), prior to accessing a boot device and loading an OS (operating system). BIOS itself stands for "Basic Input Output System" which is self describing of its function, a hardware IO system to allow computer components to work with each other.

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Q: What are the responsibilities of the ROM BIOS?
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