Question

write a assembly language program to convert GRAY to BCD code in 8051

Answer 1

An assembly language program to convert gray code in to binary code.

CODE

C300 MVI D 07 16 ; Move immediate data 07H to D register

C301 07 ;

C302 LXI H C600 21 ; Initialize the HL register pair

C303 00 ;

C304 C6 ;

C305 MOV B M 46 ; Move the memory content to B register

C306 MOV A B 78 ; Move the B register content to accumulator

C307 MVI C 00 0E ; Move immediate data 00H in to C register

C308 00 ;

C309 RAR 1F ; Rotate accumulator right

C30A XRA B A8 ; Exclusively OR the content of B register

C30B MOV B A 47 ; Move the accumulator content to B register

C30C DCR D 15 ; Decrement the D register

C30D JNZ C307 C2 ; Jump if no zero to C307H

C30E 07 ;

C30F C3 ;

C310 INX H 23 ; Increment the HL register pair

C311 MOV M A 77 ; Move the accumulator content to the memory

C312 HLT 76 ; Halt the execution

RESULT:

C600 57 ; Gray number(Input data)

C601 65 ; Binary number(Output data)

CONCLUSION:

Thank you sir/madam