Maths: timesTable

       Name: timesTable                                              [Show more]
       Type: Variable
   Category: Maths
    Summary: Lookup table for multiplication times tables
  Deep dive: Times tables and nibble arithmetic
    Context: See this variable in context in the source code
 References: This variable is used as follows:
             * DivideScaled uses timesTable
             * Multiply4x16 uses timesTable
             * Multiply8x8 uses timesTable


 In the table below, timesTable+X*16,Y contains X * Y.

 To put it another way, X and Y are both in the range 0 to 15, so they are
 4-bit values. If, in binary, they are X = %xxxx and Y = %yyyy, then:

   timesTable,%xxxxyyyy contains X * Y.

 This table is used in conjunction with the highNibble and lowNibble tables to
 look up multiplication results.


.timesTable

 FOR I%, 0, 15

  FOR J%, 0, 15

   EQUB I% * J%

  NEXT

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