📄 4-2.asm
字号:
ORG 30H
START: MOV DPTR,#TABLE
LOOP: CLR A
MOVC A,@A+DPTR
CJNE A,#0FFH,LOOP1
JMP START
LOOP1: MOV P2,A
CALL DELAY
INC DPTR
JMP LOOP
DELAY: MOV R3,#20
D1: MOV R4,#20
D2: MOV R5,#248
DJNZ R5,$
DJNZ R4,D2
DJNZ R3,D1
RET
TABLE: DB 01H,02H,04H,08H,10H,20H,40H,80H
DB 80H,40H,20H,10H,08H,04H,02H,01H
DB 03H,06H,0CH,18H,30H,60H,0C0H
DB 0C0H,60H,30H,18H,0CH,06H,03H
DB 0FFH
END
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