Format of EISA Port Initialization Data:
Offset	Size	Description	)
 00h	BYTE	flags
		bits 1-0: port size
			00 byte
			01 word
			10 dword
			11 reserved
		bit 2: masked write
		bits 6-3 reserved (0)
		bit 7: more entries follow
 01h	???
SeeAlso: #01252,#01257