Maths (Arithmetic): MULT12

       Name: MULT12                                                  [Show more]
       Type: Subroutine
   Category: Maths (Arithmetic)
    Summary: Calculate (S R) = Q * A
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * TAS3 calls MULT12
             * TAS4 calls MULT12
             * TIDY calls MULT12
             * TIS3 calls MULT12


 Calculate:

   (S R) = Q * A


.MULT12

 JSR MULT1              ; Set (A P) = Q * A

 STA S                  ; Set (S R) = (A P)
 LDA P                  ;           = Q * A
 STA R

 RTS                    ; Return from the subroutine