Learning about BIOS memory, instructions and code origins

Posted by m3taspl0it on Super User See other posts from Super User or by m3taspl0it
Published on 2010-02-10T17:55:41Z Indexed on 2010/06/14 2:23 UTC
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I'm learning about the BIOS and have a few questions.

  1. What is meant by, "This is the last 16 bytes of memory at the end of the first megabyte of memory"?

  2. The first instruction of BIOS is jump, which jumps to the main BIOS program, but where does it jump?

  3. Where does the original BIOS code originate?

I'm also interested in POST? How are POST signals executed by the processor?

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