INT E0 - PCROBOTS v1.41 - "GET_ASHELL_STATUS" - FIND OUT WHAT HAPPENED TO SHELL

	AX = 002Ch
	BX = shell ID
Return: AX = status
	    0000h missed completely
	    0001h hit a wall
	    0002h hit a robot within a 50-square radius
	    0003h hit a robot within a 25-square radius
	    0004h hit a robot within a 5-square radius
	    0005h shell not known (too old or not yet fired)
	    0006h shell still in flight
SeeAlso: AX=0003h