Page Comparison

 IN:
     IX = 0, fetch first application in the machine
     IX <> 0 (current application handle), fetch next application

OUT, if call successfullsuccessful:
     Fc = 0
     IX = new application handle
OUT, if call failed:
     Fc = 1
     A = RC_EOF, no more applications available (IX now invalid)

Registers changed after return:
     ..BCDEHL/..IY same
     AF....../IX.. different