INT E0 - PCROBOTS v1.41 - "SCAN" - SCAN FOR OTHER ROBOTS IN THE GIVEN DIRECTION

	AX = 0002h
	BX = direction (0-359 degrees)
	CX = resolution (0-45 degrees)
Return: AX = status
	    FFFFh if nothing detected
	    else robot ID (0-19)
		BX = range to detected robot
Notes:	the scan searches within CX degrees to either side of the specified
	  direction
	the scanner will see right through walls, but shells will not pass
	  through walls
	this call also terminates the current robot's turn
SeeAlso: AX=0000h,AX=0001h,AX=0003h