Mathematics and remainder for PLL MC145158

[Darrel Taylor]

Well, nevermind, I got it figured out anyway.

Give this a try.

<font color="#000000"><b>Freq1      </b><font color="#008000"><b>VAR WORD
</b></font><b>Freq2      </b><font color="#008000"><b>VAR WORD

</b></font><b>N          </b><font color="#008000"><b>VAR WORD
</b></font><b>A          </b><font color="#008000"><b>VAR WORD
</b></font><b>Remainder  </b><font color="#008000"><b>VAR WORD


</b></font><font color="#0000FF"><b><i>; --- Frequency must be split into 2 variables ---
</i></b></font><b>Freq1 </b>= <b>4336   </b><font color="#0000FF"><b><i>; 433687.5
</i></b></font><b>Freq2 </b>= <b>875
</b><font color="#008000"><b>GOSUB </b></font><b>PLL_Calc

</b><font color="#008000"><b>STOP

</b></font><b>PLL_Calc</b>:
    <b>N </b>= (<b>5018 </b>- <b>Freq1</b>)     
    <font color="#008000"><b>IF </b></font><b>Freq2 </b>&gt; <b>0 </b><font 

color="#008000"><b>THEN          
        </b></font><b>A </b>= <b>1000 </b>- <b>Freq2   
        N </b>= <b>N </b>- <b>1      
    </b><font color="#008000"><b>ELSE                       
        </b></font><b>A </b>= <b>0              
    </b><font color="#008000"><b>ENDIF                      
    </b></font><b>N </b>= <b>N </b>* <b>8          
    A </b>= <b>A </b>* <b>8          

    N </b>= <b>N </b>+ (<b>A</b>/<b>1000</b>)       
    <b>A </b>= <b>A </b>- (<b>A</b>/<b>1000</b>*<b>1000</b>)  
        
    <b>N </b>= <b>N</b>*<b>10                   
    N </b>= <font color="#008000"><b>DIV32 </b></font><b>64                   
    Remainder </b>= <b>R2                     
    Remainder </b>= <b>Remainder </b>* <b>10000      
    Remainder </b>= <font color="#008000"><b>DIV32 </b></font><b>64               
    
    A </b>= <b>A </b>* <b>10000              
    A </b>= <font color="#008000"><b>DIV32 </b></font><b>64                   
    
    A </b>= <b>A </b>+ <b>Remainder
    A </b>= <b>A </b>* <b>64
    A </b>= <font color="#008000"><b>DIV32 </b></font><b>10000
    Remainder </b>= <b>R2
    </b><font color="#008000"><b>IF </b></font><b>Remainder </b>&gt;= <b>5000 </b><font 

color="#008000"><b>THEN </b></font><b>A </b>= <b>A </b>+ <b>1
</b><font color="#008000"><b>RETURN</b></font>