再余数/5
MOV R0, #DATA_GROUP(0)
MOV MSB_DATA, #0
MOV LSB_DATA, #0
MOV R2, #5
DIV-LOOP:
CLR C
MOV A, @R0
MOV B, #5
DIV AB
ADD A, MSB_DATA
MOV MSB_DATA, A
MOV A, B
ADD A, LSB_DATA
MOV LSB_DATA, A
INC R0
DJNZ R2, DIV-LOOP
MOV A, LSB_DATA
MOV B, #5
DIV AB
ADD A, MSB_DATA
MOV MSB, A
RET
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