INT 7F - Alloy NTNX, MW386 - GET NEXT FULL CHANNEL                              
	AH = 15h
	CL = 01h
	DX:DI -> full-channel structure (see #03959)
Return: AL = status
	    00h successful
	    01h busy
	    0Ah no datagrams available
Note:	MW386 v1.0 returns the lowest channel with a datagram; newer versions
	  and NTNX return the oldest datagram
SeeAlso: AH=15h/CL=00h


Format of Alloy full-channel structure:
Offset	Size	Description	(Table 03959)
 00h	BYTE	number of channel with oldest datagram
 01h	BYTE	sender ID