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Adding PDP-11 support


Hello,

I'm adding PDP-11 support to binutils.  Is there anything in
particular I should know about?

The assemblers on the PDP-11 use octal numbers by default.  Decimal
numbers are indicated by placing a '.' after them.  Should I modify
the GNU assembler to understand this syntax, or should I parse
numbers in the PDP-11 back end?  It seems that this would mean
that I couldn't use any of the expression parising code in GAS,
which would be unfortunate.

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