INT F1 - AQUEDUCT, PIPELINE - GET DATA AREA ADDRESS                             
Return: AX:BX -> data area
Program: AQUEDUCT and PIPELINE are TSRs by James W. Birdsall to connect COM1
	  and COM2 in software
Note:	The installation check consists of testing for the following signature
	  immediately preceding the interrupt handler: "JWBtvv" where 't' is
	  either "A" for AQUEDUCT or "P" for PIPELINE and "vv" is a two-digit
	  version number
Index:	installation check;AQUEDUCT|installation check;PIPELINE