Format of beta DPMS registration structure:
Offset Size Description )
00h DWORD real-mode API entry point (see #02795)
04h DWORD 16-bit protected-mode API entry point (see #02795)
08h 8 BYTEs reserved (0)
10h 8 BYTEs blank-padded server OEM name
18h WORD flags
bit 0: fast processor reset available (286 only)
bits 1-15 reserved (undefined)
1Ah 2 BYTEs DPMS version (major,minor)
1Ch BYTE CPU type (02h = 286, 03h = 386 or higher)