.module _4.c
                        .area text(rom, con, rel)
 0000                   .dbfile D:\16實(shí)驗(yàn)程序\延時(shí)試驗(yàn)\4.c
 0000                   .dbfunc e s_10us _s_10us fV
 0000           ;             aa -> R20,R21
 0000           ;             ms -> R16,R17
                        .even
 0000           _s_10us::
 0000 4A93              st -y,R20
 0002 5A93              st -y,R21
 0004                   .dbline -1
 0004                   .dbline 6
 0004           ; #include "iom16v.h"  
 0004           ; #include <macros.h>
 0004           ; //延時(shí)函數(shù)
 0004           ; //在16MHz時(shí)產(chǎn)生10us的延時(shí)
 0004           ; void s_10us(unsigned int ms)
 0004           ; {
 0004                   .dbline 8
 0004           ;     unsigned int aa;
 0004           ;       for(;ms>=1;ms--)
 0004 0CC0              xjmp L5
 0006           L2:
 0006                   .dbline 9
 0006           ;       {
 0006                   .dbline 10
 0006           ;       for(aa=0;aa<=17;aa++)
 0006 4427              clr R20
 0008 5527              clr R21
 000A 02C0              xjmp L9
 000C           L6:
 000C                   .dbline 11
 000C           ;       {;}
 000C                   .dbline 11
 000C                   .dbline 11
 000C           L7:
 000C                   .dbline 10
 000C 4F5F              subi R20,255  ; offset = 1
 000E 5F4F              sbci R21,255
 0010           L9:
 0010                   .dbline 10
 0010 81E1              ldi R24,17
 0012 90E0              ldi R25,0
 0014 8417              cp R24,R20
 0016 9507              cpc R25,R21
 0018 C8F7              brsh L6
 001A           X0:
 001A                   .dbline 12
 001A           ;       }
 001A           L3:
 001A                   .dbline 8
 001A 0150              subi R16,1
 001C 1040              sbci R17,0
 001E           L5:
 001E                   .dbline 8
 001E 0130              cpi R16,1
 0020 E0E0              ldi R30,0
 0022 1E07              cpc R17,R30
 0024 80F7              brsh L2
 0026           X1:
 0026                   .dbline -2
 0026           L1:
 0026                   .dbline 0 ; func end
 0026 5991              ld R21,y+
 0028 4991              ld R20,y+
 002A 0895              ret
 002C                   .dbsym r aa 20 i
 002C                   .dbsym r ms 16 i
 002C                   .dbend
 002C                   .dbfunc e main _main fI
                        .even
 002C           _main::
 002C                   .dbline -1
 002C                   .dbline 16
 002C           ; }     
 002C           ;  
 002C           ; main()
 002C           ;  {
 002C                   .dbline 17
 002C           ;  DDRD=0xff;
 002C 8FEF              ldi R24,255
 002E 81BB              out 0x11,R24
 0030 0CC0              xjmp L12
 0032           L11:
 0032                   .dbline 20
 0032           ;  //在端口d產(chǎn)生500Hz的信號(hào)
 0032           ;  while(1)
 0032           ;    {
 0032                   .dbline 21
 0032           ;    PORTD=0xff;
 0032 8FEF              ldi R24,255
 0034 82BB              out 0x12,R24
 0036                   .dbline 22
 0036           ;    s_ms(50);
 0036 02E3              ldi R16,50
 0038 10E0              ldi R17,0
 003A 0E940000          xcall _s_ms
 003E                   .dbline 23
 003E           ;    PORTD=0x00;
 003E 2224              clr R2
 0040 22BA              out 0x12,R2
 0042                   .dbline 24
 0042           ;    s_ms(50);
 0042 02E3              ldi R16,50
 0044 10E0              ldi R17,0
 0046 0E940000          xcall _s_ms
 004A                   .dbline 25
 004A           ;    }
 004A           L12:
 004A                   .dbline 19
 004A F3CF              xjmp L11
 004C           X2:
 004C                   .dbline -2
 004C           L10:
 004C                   .dbline 0 ; func end
 004C 0895              ret
 004E                   .dbend
 004E           ;  }