Format of PENDEV.SYS entry point record:
Offset Size Description )
00h DWORD -> array of jumps
04h WORD offset of function to retrieve entry point (see #01501)
06h 2 BYTEs signature "Pe"
08h WORD offset of function to set entry point (see #01502)
0Ah 2 BYTEs signature "nD"
0Ch WORD offset of function to clear entry point (see #01503)
0Eh WORD signature "OS"