delay.ls1

hd7279接口芯片适用于扩展键盘和led

A51 MACRO ASSEMBLER  DELAY                                                                05/02/2009 18:09:26 PAGE     1


MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN delay.OBJ
ASSEMBLER INVOKED BY: D:\Program Files\keil\C51\BIN\A51.EXE delay.src PR(.\delay.ls1) EP DEBUG

LOC  OBJ            LINE     SOURCE

                       1     ; .\delay.SRC generated from: delay.c
                       2     ; COMPILER INVOKED BY:
                       3     ;        D:\Program Files\keil\C51\BIN\C51.EXE delay.c ROM(SMALL) BROWSE DEBUG OBJECTEXTEND
                              SRC(.\delay.SRC)
                       4     
                       5     
                       6     NAME    DELAY
                       7     
                       8     ?PR?long_delay?DELAY SEGMENT CODE INBLOCK 
                       9     ?PR?short_delay?DELAY                    SEGMENT CODE INBLOCK 
                      10     ?PR?_delay1ms?DELAY  SEGMENT CODE INBLOCK 
                      11             PUBLIC  _delay1ms
                      12             PUBLIC  short_delay
                      13             PUBLIC  long_delay
                      14     ; #include<intrins.h>
                      15     ; void long_delay(void)
                      16     
----                  17             RSEG  ?PR?long_delay?DELAY
0000                  18     long_delay:
                      19                             ; SOURCE LINE # 2
                      20     ; {
                      21                             ; SOURCE LINE # 3
                      22     ;       #pragma asm
                      23     ;       LONGDELAY:      MOV R5,#125//延时约250us
0000 7D7D             24               LONGDELAY:    MOV R5,#125 
                      25     ;                               DJNZ R5,$
0002 DDFE             26               DJNZ R5,$
                      27     ;       #pragma endasm
                      28     ; }
                      29                             ; SOURCE LINE # 8
0004 22               30             RET     
                      31     ; END OF long_delay
                      32     
                      33     ; void short_delay(void)
                      34     
----                  35             RSEG  ?PR?short_delay?DELAY
0000                  36     short_delay:
                      37                             ; SOURCE LINE # 9
                      38     ; {
                      39                             ; SOURCE LINE # 10
                      40     ;       #pragma asm
                      41     ;       SHORTDELAY:     MOV R6,#50 //延时约100us
0000 7E32             42               SHORTDELAY:   MOV R6,#50  
                      43     ;                               DJNZ R6,$
0002 DEFE             44               DJNZ R6,$
                      45     ;       #pragma endasm
                      46     ; }
                      47                             ; SOURCE LINE # 15
0004 22               48             RET     
                      49     ; END OF short_delay
                      50     
                      51     ; void delay1ms(unsigned int ms)
                      52     
----                  53             RSEG  ?PR?_delay1ms?DELAY
0000                  54     _delay1ms:
                      55             USING   0
                      56                             ; SOURCE LINE # 16
                      57     ;---- Variable 'ms?240' assigned to Register 'R6/R7' ----
A51 MACRO ASSEMBLER  DELAY                                                                05/02/2009 18:09:26 PAGE     2

                      58     ; {
                      59                             ; SOURCE LINE # 17
                      60     ;       unsigned char i,j;
                      61     ;       for(i=0;i<ms;i++)
                      62                             ; SOURCE LINE # 19
                      63     ;---- Variable 'i?241' assigned to Register 'R5' ----
0000 E4               64             CLR     A
0001 FD               65             MOV     R5,A
0002                  66     ?C0003:
0002 ED               67             MOV     A,R5
0003 C3               68             CLR     C
0004 9F               69             SUBB    A,R7
0005 E4               70             CLR     A
0006 9E               71             SUBB    A,R6
0007 500B             72             JNC     ?C0009
                      73     ;               for(j=0;j<200;j++) //执行时间约1ms
                      74                             ; SOURCE LINE # 20
                      75     ;---- Variable 'j?242' assigned to Register 'R4' ----
0009 E4               76             CLR     A
000A FC               77             MOV     R4,A
000B                  78     ?C0006:
                      79     ;               {
                      80                             ; SOURCE LINE # 21
                      81     ;                       _nop_();
                      82                             ; SOURCE LINE # 22
000B 00               83             NOP     
                      84     ;                       _nop_();
                      85                             ; SOURCE LINE # 23
000C 00               86             NOP     
                      87     ;               }
                      88                             ; SOURCE LINE # 24
000D 0C               89             INC     R4
000E BCC8FA           90             CJNE    R4,#0C8H,?C0006
0011                  91     ?C0005:
0011 0D               92             INC     R5
0012 80EE             93             SJMP    ?C0003
                      94     ; }                                             ; SOURCE LINE # 25
0014                  95     ?C0009:
0014 22               96             RET     
                      97     ; END OF _delay1ms
                      98     
                      99             END
A51 MACRO ASSEMBLER  DELAY                                                                05/02/2009 18:09:26 PAGE     3

SYMBOL TABLE LISTING
------ ----- -------


N A M E                T Y P E  V A L U E   ATTRIBUTES

?C0003. . . . . . . .  C ADDR   0002H   R   SEG=?PR?_DELAY1MS?DELAY
?C0005. . . . . . . .  C ADDR   0011H   R   SEG=?PR?_DELAY1MS?DELAY
?C0006. . . . . . . .  C ADDR   000BH   R   SEG=?PR?_DELAY1MS?DELAY
?C0009. . . . . . . .  C ADDR   0014H   R   SEG=?PR?_DELAY1MS?DELAY
?PR?LONG_DELAY?DELAY.  C SEG    0005H       REL=INBLOCK
?PR?SHORT_DELAY?DELAY  C SEG    0005H       REL=INBLOCK
?PR?_DELAY1MS?DELAY .  C SEG    0015H       REL=INBLOCK
DELAY . . . . . . . .  N NUMB   -----       
LONGDELAY . . . . . .  C ADDR   0000H   R   SEG=?PR?LONG_DELAY?DELAY
LONG_DELAY. . . . . .  C ADDR   0000H   R   SEG=?PR?LONG_DELAY?DELAY
SHORTDELAY. . . . . .  C ADDR   0000H   R   SEG=?PR?SHORT_DELAY?DELAY
SHORT_DELAY . . . . .  C ADDR   0000H   R   SEG=?PR?SHORT_DELAY?DELAY
_DELAY1MS . . . . . .  C ADDR   0000H   R   SEG=?PR?_DELAY1MS?DELAY


REGISTER BANK(S) USED: 0 


ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)