INT 1A - PCMCIA Socket Services v1.00 - READ ONE

	AH = 91h
	AL = adapter number
	BL = socket number (01h to maximum supported by adapter)
	BH = attributes (see #00687)
	DX:SI = card address
Return: CF clear if successful
	    AH destroyed
	    CL/CX = value read
	CF set on error
	    AH = error code (01h,07h,09h,0Bh,14h) (see #00656)
	    CX may be destroyed
Note:	this function is only valid for I/O-mapped sockets
SeeAlso: AH=92h,AH=93h,INT 21/AX=440Dh"DOS 3.2+"