INT 13 - IBMCACHE.SYS - CACHE STATUS

	AH = 1Dh
	AL = subfunction
	    01h get status record
		DL = drive???
		Return: ES:BX -> status record (see #00263)
			CF set on error
			    AH = error code
	    02h set cache status
		ES:BX -> status record (see #00263)
		DL = drive???
		Return: CF set on error