INT 21 OP - Phar Lap 386/DOS-Extender VMM v2.1c - READ PAGE-TABLE ENTRY         
	AX = 251Dh
	BL = address type
	    00h linear address
		ECX = linear address of page table entry to read
	    01h pointer
		ES:ECX -> page table entry to read
Return: CF clear if successful
	    EAX = contents of page table entry
	CF set on error
	    EAX = error code
		09h invalid address or NOPAGE option set
		78h invalid under DPMIsee DOS Protected-Mode Interface
Note:	this function is obsolete; use AX=252Bh/BH=09h instead
SeeAlso: AX=251Eh,AX=252Bh/BH=09h,AX=EB00h,INT 31/AX=0506h