Format of VINES Function 0004h/Subfunction 0010h request block:
Offset	Size	Description	)
 00h	WORD	0010h
 02h	BYTE	drive number (0=default, 1=A, ...)
 03h	BYTE	reserved
 04h 64	BYTEs	???
 44h 16	BYTEs	IPC port (see #03328 at AX=0001h"Sosock")