#sum1to10.sim4 -  Sum the integers from 1 to 10 
000 8201    start: clr    %r1         %r1 = 0;                   
001 5010           lda    10          for (%r2=10;%r2!=0;%r2--)  
002 9002           mov    %r0,%r2     {                          
003 7202    loop:  skne   %r2                                    
004 6008           jmp    done                                   
005 9421           add    %r2,%r1       %r1=%r1+%r2;             
006 8402           dec    %r2                                    
007 6003           jmp    loop        }                          
008 9010    done:  mov    %r1,%r0     sum = %r1;                 
009 2011           st     sum                                    
010 0000           halt               return;                    
011 0000   sum:    .word              int sum;                   
000                .end    start