Page Comparison

IN:
   BHL = null terminated CLI string, B = 0 local
     C = length of string
    IX = input stream if BHL=0

OUT:
   Fc = 0, successful
   Fc = 1, A = RC_ROOM ($07) if no memory or no free handle.
		   A = RC_FAIL ($16) if stream input is :INP


Registers affected after return:
     ..BCDEHL/IXIY same
     AF....../.... different