operating system - Why Does the BIOS INT 0x19 Load Bootloader at "0x7C00"? -

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as know bios interrupt (int) 0x19 searches boot signature (0xaa55). loads , executes our bootloader @ 0x7c00 if found.

my question : why 0x7c00? reason ? how evaluate through methods?

this dead i'm going answer.

at start of bootloader when set origin of segment 0x7c00 registers jump address well. ideally if check out online resources tell how use int 0x19 command guide on how jump address.

to fix ideally, reset stack 0 @ start of every jump new address.


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