INT 69 - 10NET v5.0 - SYSSVC.COM - ???                                          
	AX = 4001h
Return: CF clear
	AX = 0000h
	ES:SI -> ???
InstallCheck:	test for the signature "SYSV" immediately before the interrupt
	  handler
Range:	INT 60 to INT 7F, selected by configuration
SeeAlso: AX=4002h
Index:	installation check;10NET SYSSVC