INT E0 - PCROBOTS v1.41 - "MOVEMENT" - START MOVING

	AX = 0001h
	BX = speed (0-maximum for robot)
	CX = direction (0-359 degrees)
Return: nothing
Notes:	the speed will change to the specified value at the maximum
	  acceleration the robot is capable of; if the robot is already moving
	  faster than its maximum maneuverability speed, it will not be able
	  to change direction
	this call also terminates the current robot's turn
SeeAlso: AX=0000h,AX=0002h,AX=0003h