Maths (Arithmetic): GCASH

       Name: GCASH                                                   [Show more]
       Type: Subroutine
   Category: Maths (Arithmetic)
    Summary: Calculate (Y X) = P * Q * 4
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * TT210 calls GCASH
             * TT219 calls GCASH


 Calculate the following multiplication of unsigned 8-bit numbers:

   (Y X) = P * Q * 4


.GCASH

 JSR MULTU              ; Call MULTU to calculate (A P) = P * Q