3 ms·

BIOS itself can be implemented as 32-bit code, which contains software emulator of 16-bit code. This emulator runs until CPU is switched to 32-bit protected mod

by mkup 9y ago

BIOS itself can be implemented as 32-bit code, which contains software emulator of 16-bit code. This emulator runs until CPU is switched to 32-bit protected mode by OS bootloader.