MCS-51 单片机设计应用程序实例 - Read

AJMP DISP1
CONT: ADD A,R5
;
;
MOV B,A
AJMP LOOP
DISPLAY: MOV A,#0FFH
MOV P0,A
MOV P2,A
MOV R6,#0FEH
MOV R0,B
MOV R7,#08H
DISLOOP: MOV A,@R0
;
MOV P0,A
MOV P2,R6
LCALL DL1MS
INC R0
MOV A,R6
RL A
MOV R6,A
DJNZ R7,DISLOOP
RET
DISP2: LCALL DISPP
;
LCALL MOVH
LCALL MOVH1
AJMP DISP2
DISPP: MOV B,#50H
;
MOV R4,#24H
LCALL DISPLAY
DJNZ R4,DISPP
RET
MOVH: MOV R1,#20H
MOV R0,#50H
MOV R2,#08H
MOV1: MOV A,@R0
CLR C
RLC A
MOV @R0,A
MOV A,@R1
RRC A
MOV @R1,A
MCS-51 系 列 单 片 机 设 计 实 例
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