Hi All,
I need to write a boot order automatically to the BIOS NVRAM using BIOS
PNP function 63H(boot priority). The call supports both real and protected
modes(16bit).
The call in real mode is relatively simple, but since I need to get this
working in XP, I got a problem.
So far I’ve seen SMBIOSW -> some DPMI based code from user mode(NTVDM
16bit DPMI server) that reads out some DMPI related data - nifty piece of
asm 16bit MDI though. I doubt that the VDM DMPI server supports this kind
of call, so where does that leave me? WDM driver…
Is there some way of using GDT/LDT and physical memory directly or is it
FORBIDDEN…
There must be some bright guy here who knows how this is done. I would
appreciate any help.
Many Thanks