INT 21 - Software Carousel - SEND COMMAND TO MEMORY SECTION                     
	AX = DF07h
	BL = task number
	CX = length of command (max 8 chars)
	DS:SI -> command line
Return: AL = status
	    00h Carousel not running
	    01h successful
	    FFh unsucessful
		AH = error code (01h,06h) (see #01813)
Note:	the maximum length seems too small and may be a typo for 80 characters