Re: Mod10 Routine

jack.roughgarden@cussys.com wrote:
> 
> Does anyone know where I can find a working example of a Mod10
> check digit routine?
> 

Here is one that we use.  You will need to use the correct # of digits
for your application but mod10 itself is the same for all applications.

John Hall
Home Sales Co.

 D  DIGITDS       UDS                           
 D  DIGT                   1     11  0          
 D                                     DIM(11)  
 D  OCR1                   1     11             

 C* SETUP FIELDS FOR OCR SCAN LINE                          
 C* CALL OCRCAL TO GET DIGITS PASS - OC, RETURN VAL IN TEST 
 C* START WITH IN93 ON                                      
 C*                                                         
 C* MAKE OF FIRST SCAN LINE MMYY$$$$$$$                     
 C                   MOVEL     M             MMYY           
 C                   MOVE      Y             MMYY           
 C                   MOVEL     MMYY          OCR1           
 C                   MOVE      CUMAMT        OCR1           
 C*                    MOVELOCR1      DIGT                              
 C                   Z-ADD     11            I                 2 0      
 C                   Z-ADD     0             CHECK                      
 C                   Z-ADD     2             MLT               1 0      
 C*                                                                     
 C     LP1           TAG                                                
 C                   MOVE      DIGT(I)       OC                1 0      
 C                   EXSR      OCRCAL                                   
 C                   ADD       TEST          CHECK             3 0      
 C                   SUB       1             I                          
 C     I             IFGT      0                                        
 C                   GOTO      LP1                                      
 C                   END                                                
 C*                                                                     
 C*                    SETON                     H2                     
 C* CHECK HOLDS TOTAL - FIND NEXT HIGHER MULT OF 10 & SUBR              
 C     CHECK         ADD       9             CHECK1            3 0      
 C                   MOVEL     CHECK1        CHECK2            2 0      
 C     10            MULT      CHECK2        CHECK1                     
 C     CHECK1        SUB       CHECK         CD1               1 0
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