4 ms·
PC BIOS was mostly just for DOS and bringup, it also helped in moving stuff across the barrier during 32 bit boot but afterwards the only thing you would normal
by jacquesm 2mo ago
PC BIOS was mostly just for DOS and bringup, it also helped in moving stuff across the barrier during 32 bit boot but afterwards the only thing you would normally use it for is to call hardware specific ROMs for instance for mode changes and such. The rest of the time you'd avoid it like the plague (also because of the expensive switch back to 'real' mode).