汇编语言：在两个数码管上实现00-99的循环显示

START:

STOP:

CLEAR:

OUT:

JZ STOP DEC A JZ CLEAR SJMP OUT

SETB TR0 SJMP OUT

CLR TR0 SJMP OUT

MOV R2,#0 MOV R3,#0 MOV R4,#0 MOV

R5,#0

POP ACC MOV R1,A POP ACC MOV R0,A POP BIT_COUNT

POP DATA_OUT

POP DPL POP DPH POP ACC POP RETI

PSW

;延时25ms子程序

MOV

R0,#49

DELAY25MS: D11:

MOV NOP DJNZ DJNZ RET

R1,#253

D12:

R1,D12 R0,D11

;延时50μs子程序 MOV NOP DJNZ

R0,D21

R0,#23

DELAY50:

D21:

RET

;延时25μs子程序 MOV DJNZ RET

R0,#11

DELAY25: D31:

R0,D31

;延时8μs子程序

MOV

R0,#2

DELAY8:

NOP DJNZ RET

R0,D41

D41:

;延时1ms子程序

R0,#2

DELAY1MS: MOV

NOP MOV NOP DJNZ DJNZ RET END

D51:

R1,#247

D52:

R1,D52 R0,D51