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9 的代码
9.3.1无条件转移.txt
JMP1:
MOV DPTR,#TBJ
MOV A,R3
MOV B,#03H
MUL AB
ADD A,DPH
MOV DPH,A
MOV A,R2
MOV B,#03H
MUL AB
XCH A,B
ADD A,DPH
XCH A,B
JMP @A+DPTR
LJMP PRG0
LJMP PRG1
LJMP PRG2
9.1.1一重循环延时.txt
MOV R5,#TIME
LOOP:
NOP
NOP
DJNZ R5,LOOP
RET
9.2.1精确延时.txt
TIM96:
HSOTIME EQU 04H
HSOCMD EQU 06H
INTMSK EQU 08H
TIME1 EQU 0AH
CSEG AT 200AH
DCW INTV
CSEG AT 2080H
LDB 48H,#N
LD SP,#100H
LDB HSOCMD,#1BH
ADD
9.1.2、多重循环延时.txt
DELAY:
MOV R7,#200
DELAY1:
MOV R6,#123
NOP
DEL2:
DJNZ R6,DEL2
DJNZ R7,DELI
RET
9.3.2条件分支转移.txt
1 JZ、JNZ分支程序实例
JZ M0
MOV A,R4
JNZ M1
M0:
AJMP G0
M1:
ACALL DP
JZ OV2
JC OV2
ORL 09H,#80H
ORL 0DH,#80H
MOV 1DH,R5
MOV 1EH,R6
MOV 1FH,R7
MOV R0,#2
9.4闪动的led.uv2
### uVision2 Project, (C) Keil Software
### Do not modify !
Target (Target 1), 0x0000 // Tools: 'MCS-51'
Group (Source Group 1)
File 1,2, 0x0
File 1,1,
9.lnp
"STARTUP.obj",
"main.obj"
TO "9.4闪动的LED"
RAMSIZE(256)