                            



         ADDENDUM TO CERTAINLY REGARDING TWO'S MODE


	Two's complement mode is in the process of
being implemented.  Until the required hardware changes
have been completed, it is inadvisable to attempt to
do two's complement mode arithmetic.  Thus the pseudo-
instructions ones and twos and the machine instructions
e1m and e2m should not be used.  All operations will be
performed in one's complement.




















































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