MCS-51 program to find the number of identical numbers-EEWORLD

Collect

　　
　　Find out how 　　many bytes are zero in 2000~200FH, and put the number of zeros in 2100H.

001

ORG 0AA0H

0AA0 7810 L5800: MOV R0,#10H ;Search 16 bytes

0AA2 7900 MOV R1,#00H

0AA4 902000 MOV DPTR,#2000H

0AA7 E0 L5811: MOVX A,@DPTR

0AA8 B40001 CJNE A,#00H,L5816;Is the retrieved content equal to 00H?

0AAB 09 INC R1 ; add 1 to the number of items taken out

0AAC A3 L5816: INC DPTR

0AAD D8F8 DJNZ R0,L5811 ;To be continued

0AAF 902100 MOV DPTR,#2100H

0AB2 E9 MOV A,R1

0AB3 F0 MOVX @DPTR,A ; send 2100H for the same number

0AB4 80FE L581E: SJMP L581E

END

Keywords：MCS-51 Reference address：MCS-51 program to find the number of identical numbers

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