INT 21,43 - Get/Set File Attributes

	AH = 43h
	AL = 00 to get attribute
	   = 01 to set attribute
	DS:DX = pointer to an ASCIIZ path name
	CX = attribute to set

	|5|4|3|2|1|0|  CX  valid file attributes
	 | | | | | `---- 1 = read only
	 | | | | `----- 1 = hidden
	 | | | `------ 1 = system
	 | `--------- not used for this call
	 `---------- 1 = archive


	on return:
	AX = error code if CF set  (see DOS ERROR CODES)
	CX = the attribute if AL was 00

	- see	DIRECTORY