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⌂ ∞ Elite on the BBC Micro

Maths (Arithmetic): MAD

[BBC Micro disc version, Docked]

       Name: MAD                                                     [Show more]
       Type: Subroutine
   Category: Maths (Arithmetic)
    Summary: Calculate (A X) = Q * A + (S R)

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * MVS4 calls MAD
             * TAS3 calls MAD
             * TIS1 calls MAD
             * TIS3 calls MAD




 Calculate

   (A X) = Q * A + (S R)



.MAD

 JSR MULT1              \ Call MULT1 to set (A P) = Q * A

                        \ Fall through into ADD to do:
                        \
                        \   (A X) = (A P) + (S R)
                        \         = Q * A + (S R)