MOV R5,#0
MOV R6,#0
MOV R7,#0
MOV DPTR,#TAB
MOV R2,#50
LOOP:
CLR A
MOVC A,@A+DPTR
CJNE A,#3AH,LP1
LP1:
JC SUZI
CJNE A,#'Z',LP2
SJMP DAXIE
LP2:
JNC,XIAXIE
DAXIE:
INC R6
SJMP LP3
XIAOXIE:
INC R7
SJMP LP3
SUZI:
INC R5
LP3:
INC DPTR
DJNZ R2,LOOP
RET
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