INT 44 - Acorn BBC Master 512 - "OSARGS" - GET/SET FILE PARAMS FOR OPEN FILE
	AH = 00h
	AL = function
	    00h get current filing system
		Return: AL = filing system (see #03200)
	    01h get address of commandline tail
		Return: BX buffer filled with address of command tail in I/O
			      processor address space (use INT 4A/AL=05h to
			      retrieve)
	    FFh flush all files onto secondary storage
	BX -> 4-byte data buffer
Note:	the commandline tail is terminated with a carriage return (0Dh)
SeeAlso: INT 40"Acorn",INT 45"Acorn"


(Table 03200)
Values for BBC Master filing system:
 00h	none
 01h	1200 bps cassette
 02h	300 bps cassette
 03h	ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. FS
 04h	DFS
 05h	ANFS/NFS
 06h	TFS
 08h	ADFS