#recurse.sim5 - input an integer n and output 1+2+3+...+    
000 5010    main:    lda    10          %r1 = 10            
001 9001             mvrr   %r0,%r1                         
002 5006             lda    recurse     %r0=recurse(%r1)    
003 9600             call   %r0                             
004 8100             out    %r0         output(%r0)         
005 0000             halt               return              
006 8801    recurse: push   %r1         temp=%r1            
007 7101             skeq   %r1         if (%r1 == 0)       
008 6012             jmp    notdone                         
009 8901             pop    %r1            %r1=temp
010 8200             clr    %r0            return 0         
011 8909             ret                                    
012 8401    notdone: dec    %r1         %r1--               
013 5006             lda    recurse     %r0=recurse(%r1)    
014 9600             call   %r0                             
015 8901             pop    %r1         %r1=temp     
016 9410             addr   %r1,%r0     return %r0=%r0+temp
017 8909             ret                                    
000                  .end   main