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FADDP             Add Real and Pop            Exception Flags: I D O U P

FADDP destination, source

       Logic:      ST(i) . ST(i) + ST
                   pop stack

     FADDP adds two operands. It takes the source operand from ST, and the
     destination operand must be part of the stack, ST(i). It adds the two
     numbers, puts the result in the indicated ST(i) register, and then pops
     the stack.

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   Operands            Clocks         Bytes           Example
   FADDP reg, reg      75-105           3             FADDP ST(1), ST
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