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1、汇编程序： ORG 0000HLJMP MAINORG 0013HLJMP INTORG 0030HMAIN: SETB EA SETB EX1SETB PX1SETB IT1MOV A, #01HHERE:SJMP HERE ORG 0100HINT: MOV P1, A RL ARETIENDHex文件:03000000020800F3:03000000020030CB:03001300020100E7:0C003000D2AFD2AAD2BAD28A740180FEEC:04010000F590233221:00000001FF个人解释：（其实反汇编过程不能反映真实程序要执行的过程，因为

2、外部中断1的触发需要配合硬件电路来实现才能产生，因此单纯执行汇编程序仅仅是顺序执行，并没有触发中断响应，进而执行中断服务程序。）对hex文件进行反编译：;=;=Power Disassembler for MCS-51 and 6502=;=; Writen by: 覃远高; Copyright: 覃远高; Tel: Update: 3.Jul,2000;=;=Disassemble information=;=; File Name: C:UserswugaochaoDesktopzhongduan.hex; IC Body: MCS-51 ; Date: 201

3、6/9/13;=;=;标号=指令=地址=机器码=;=Q0000: LJMP Q0030 ;0000 02 00 30;=Q0003: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q000B: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0013: DB 02H, 01H, 00H, 00H, 00H, 00H, 00H, 00H;.Q001B: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0023: DB 00H, 00H, 00H, 00H, 00H, 00H,

4、00H, 00H;.Q002B: DB 00H, 00H, 00H, 00H, 00H;.;=Q0030: SETB EA ;0030 D2 AF SETB EX1 ;0032 D2 AA SETB PX1 ;0034 D2 BA SETB IT1 ;0036 D2 8A MOV A,#01H ;0038 74 01 SJMP $ ;003A 80 FE NOP ;003C 00 NOP ;003D 00 NOP ;003E 00 NOP ;003F 00 NOP ;0040 00 NOP ;0041 00 NOP ;0042 00 NOP ;0043 00 NOP ;0044 00 NOP

5、;0045 00 NOP ;0046 00 NOP ;0047 00 NOP ;0048 00 NOP ;0049 00 NOP ;004A 00 NOP ;004B 00 NOP ;004C 00 NOP ;004D 00 NOP ;004E 00 NOP ;004F 00 NOP ;0050 00 NOP ;0051 00 NOP ;0052 00 NOP ;0053 00 NOP ;0054 00 NOP ;0055 00 NOP ;0056 00 NOP ;0057 00 NOP ;0058 00 NOP ;0059 00 NOP ;005A 00 NOP ;005B 00 NOP ;

6、005C 00 NOP ;005D 00 NOP ;005E 00 NOP ;005F 00 NOP ;0060 00 NOP ;0061 00 NOP ;0062 00 NOP ;0063 00 NOP ;0064 00 NOP ;0065 00 NOP ;0066 00 NOP ;0067 00 NOP ;0068 00 NOP ;0069 00 NOP ;006A 00 NOP ;006B 00 NOP ;006C 00 NOP ;006D 00 NOP ;006E 00 NOP ;006F 00 NOP ;0070 00 NOP ;0071 00 NOP ;0072 00 NOP ;0

7、073 00 NOP ;0074 00 NOP ;0075 00 NOP ;0076 00 NOP ;0077 00 NOP ;0078 00 NOP ;0079 00 NOP ;007A 00 NOP ;007B 00 NOP ;007C 00 NOP ;007D 00 NOP ;007E 00 NOP ;007F 00 NOP ;0080 00 NOP ;0081 00 NOP ;0082 00 NOP ;0083 00 NOP ;0084 00 NOP ;0085 00 NOP ;0086 00 NOP ;0087 00 NOP ;0088 00 NOP ;0089 00 NOP ;00

8、8A 00 NOP ;008B 00 NOP ;008C 00 NOP ;008D 00 NOP ;008E 00 NOP ;008F 00 NOP ;0090 00 NOP ;0091 00 NOP ;0092 00 NOP ;0093 00 NOP ;0094 00 NOP ;0095 00 NOP ;0096 00 NOP ;0097 00 NOP ;0098 00 NOP ;0099 00 NOP ;009A 00 NOP ;009B 00 NOP ;009C 00 NOP ;009D 00 NOP ;009E 00 NOP ;009F 00 NOP ;00A0 00 NOP ;00A

9、1 00 NOP ;00A2 00 NOP ;00A3 00 NOP ;00A4 00 NOP ;00A5 00 NOP ;00A6 00 NOP ;00A7 00 NOP ;00A8 00 NOP ;00A9 00 NOP ;00AA 00 NOP ;00AB 00 NOP ;00AC 00 NOP ;00AD 00 NOP ;00AE 00 NOP ;00AF 00 NOP ;00B0 00 NOP ;00B1 00 NOP ;00B2 00 NOP ;00B3 00 NOP ;00B4 00 NOP ;00B5 00 NOP ;00B6 00 NOP ;00B7 00 NOP ;00B8

10、 00 NOP ;00B9 00 NOP ;00BA 00 NOP ;00BB 00 NOP ;00BC 00 NOP ;00BD 00 NOP ;00BE 00 NOP ;00BF 00 NOP ;00C0 00 NOP ;00C1 00 NOP ;00C2 00 NOP ;00C3 00 NOP ;00C4 00 NOP ;00C5 00 NOP ;00C6 00 NOP ;00C7 00 NOP ;00C8 00 NOP ;00C9 00 NOP ;00CA 00 NOP ;00CB 00 NOP ;00CC 00 NOP ;00CD 00 NOP ;00CE 00 NOP ;00CF

11、00 NOP ;00D0 00 NOP ;00D1 00 NOP ;00D2 00 NOP ;00D3 00 NOP ;00D4 00 NOP ;00D5 00 NOP ;00D6 00 NOP ;00D7 00 NOP ;00D8 00 NOP ;00D9 00 NOP ;00DA 00 NOP ;00DB 00 NOP ;00DC 00 NOP ;00DD 00 NOP ;00DE 00 NOP ;00DF 00 NOP ;00E0 00 NOP ;00E1 00 NOP ;00E2 00 NOP ;00E3 00 NOP ;00E4 00 NOP ;00E5 00 NOP ;00E6 0

12、0 NOP ;00E7 00 NOP ;00E8 00 NOP ;00E9 00 NOP ;00EA 00 NOP ;00EB 00 NOP ;00EC 00 NOP ;00ED 00 NOP ;00EE 00 NOP ;00EF 00 NOP ;00F0 00 NOP ;00F1 00 NOP ;00F2 00 NOP ;00F3 00 NOP ;00F4 00 NOP ;00F5 00 NOP ;00F6 00 NOP ;00F7 00 NOP ;00F8 00 NOP ;00F9 00 NOP ;00FA 00 NOP ;00FB 00 NOP ;00FC 00 NOP ;00FD 00

13、 NOP ;00FE 00 NOP ;00FF 00 MOV P1,A ;0100 F5 90 RL A ;0102 23 RETI ;0103 32;=Q0104: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q010C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0114: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q011C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0124: DB 00H, 00H, 00H

14、, 00H, 00H, 00H, 00H, 00H;.Q012C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0134: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q013C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0144: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q014C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0154: DB 00H, 00H, 00H

15、, 00H, 00H, 00H, 00H, 00H;.Q015C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0164: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q016C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0174: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q017C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0184: DB 00H, 00H, 00H

16、, 00H, 00H, 00H, 00H, 00H;.Q018C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0194: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q019C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01A4: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01AC: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01B4: DB 00H, 00H, 00H

17、, 00H, 00H, 00H, 00H, 00H;.Q01BC: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01C4: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01CC: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01D4: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01DC: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01E4: DB 00H, 00H, 00H

18、, 00H, 00H, 00H, 00H, 00H;.Q01EC: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01F4: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q01FC: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0204: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q020C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0214: DB 00H, 00H, 00H

19、, 00H, 00H, 00H, 00H, 00H;.Q021C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0224: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q022C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0234: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q023C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0244: DB 00H, 00H, 00H

20、, 00H, 00H, 00H, 00H, 00H;.Q024C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0254: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q025C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0264: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q026C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0274: DB 00H, 00H, 00H

21、, 00H, 00H, 00H, 00H, 00H;.Q027C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0284: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q028C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q0294: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q029C: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q02A4: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q02AC: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H;.Q02B4

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