INT 21 U - DOS 5+ ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. - GET EXCLUSION REGION LIST
	AX = 6F02h
	ES:BX -> buffer for exclusion region list (see #01773)
Return: CF clear
	AL = 00h
	ES:BX = 0000h:0000h on error, unchanged if buffer filled
Note:	for DOS versions which do not support this function, the return value
	  is AL=00h, CF unchanged, ES:BX unchanged, and the ES:BX buffer
	  unchanged
SeeAlso: AX=6F00h,AX=6F03h


Format of ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. exclusion region list:
Offset	Size	Description	(Table 01773)
 00h	WORD	number of entries
 02h 2N WORDs	start/end segments of N excluded regions