Page Comparison

IN:
   DE = OP_IN file handle
   IX = OP_OUT file handle

OUT:
   Fc = 0,
        RAM File copied successfully to destination
   Fc = 1,
        A = RC_Hand, DE or IX is not a file handle
        A = RC_Wp, destination file is write protected
        A = RC_xxx, No Room, I/O error during copying process.

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