INT 31 P - DPMIsee DOS Protected-Mode Interface 1.0+ - GET PAGE ATTRIBUTES
	AX = 0506h
	ESI = memory block handle
	EBX = offset in memory block of first page
	ECX = number of pages
	ES:EDX -> array of WORDs to hold page attributes (see #03156)
Return: CF clear if successful
	    buffer filled
	CF set on error
	    AX = error code (8001h,8023h,8025h) (see #03143)
Notes:	only supported by 32-bit DPMIsee DOS Protected-Mode Interface hosts, but may be used by 16-bit clients
	if EBX is not page-aligned, it will be rounded down
SeeAlso: AX=0504h,AX=0507h,INT 21/AX=251Dh,INT 21/AX=EB00h


Bitfields for DPMIsee DOS Protected-Mode Interface page attribute word:
Bit(s)	Description	(Table 03156)
 0-2	page type
	000 uncommitted
	001 committed
	010 mapped (see AX=0508h,AX=0509h)
	other currently unused
 3	page is read/write rather than read-only
 4	accessed/dirty bits supplied in bits 5 and 6
 5	page has been accessed (only valid if bit 4 set)
 6	page has been written (only valid if bit 4 set)
 7-15	reserved (0)