INT 21,66 - Get/Set Global Code Page (DOS 3.3+)

	AH = 66h
	AL = 01  get global code page
	   = 02  set global code page
	BX = active code page if setting
	DX = system code page if setting


	on return
	AX = error code if CF set  (see DOS ERROR CODES)
	BX = active code page  (for AL=1 only)
	DX = system code page  (for AL=1 only)


	- moves country data from COUNTRY.SYS to country memory table