cmdbuild.ls1

C51单片机的C语言例程,可实现定时器中断及其时钟功能的源代码

A51 MACRO ASSEMBLER  CMDBUILD                                                             04/01/2006 14:08:05 PAGE     1


MACRO ASSEMBLER A51 V7.10
OBJECT MODULE PLACED IN cmdbuild.OBJ
ASSEMBLER INVOKED BY: D:\KeilC51\C51\BIN\A51.EXE cmdbuild.src PR(.\cmdbuild.ls1) EP DEBUG

LOC  OBJ            LINE     SOURCE

                       1     ; .\cmdbuild.SRC generated from: cmdbuild.c
                       2     ; COMPILER INVOKED BY:
                       3     ;        D:\KeilC51\C51\BIN\C51.EXE cmdbuild.c ROM(COMPACT) BROWSE DEFINE(evalboard) DEBUG 
                             OBJECTEXTEND LISTINCLUDE SYMBOLS SRC(.\cmdbuild.SRC)
                       4     
                       5     
                       6     NAME    CMDBUILD
                       7     
                       8     ?PR?cmdb_init?CMDBUILD                   SEGMENT CODE INBLOCK 
                       9     ?PR?cmdb_prompt?CMDBUILD                 SEGMENT CODE INBLOCK 
                      10     ?PR?cmdb_scan?CMDBUILD                   SEGMENT CODE INBLOCK 
                      11     ?DT?cmdb_scan?CMDBUILD                   SEGMENT DATA OVERLAYABLE 
                      12     ?CO?CMDBUILD         SEGMENT CODE 
                      13     ?XD?CMDBUILD         SEGMENT XDATA 
                      14             EXTRN   CODE (com_getchar)
                      15             EXTRN   CODE (_com_puts)
                      16             EXTRN   CODE (_isprint)
                      17             EXTRN   CODE (_com_putchar)
                      18             PUBLIC  cmdbuf
                      19             PUBLIC  cmdndx
                      20             PUBLIC  cmdb_scan
                      21             PUBLIC  cmdb_prompt
                      22             PUBLIC  cmdb_init
                      23     
----                  24             RSEG  ?DT?cmdb_scan?CMDBUILD
0000                  25     ?cmdb_scan?BYTE:
0000                  26               c?240:   DS   2
                      27     
----                  28             RSEG  ?XD?CMDBUILD
0000                  29              cmdndx:   DS   1
0001                  30              cmdbuf:   DS   41
                      31     
----                  32             RSEG  ?CO?CMDBUILD
0000                  33     ?SC_0:
0000 434F4D4D         34             DB  'C' ,'O' ,'M' ,'M' ,'A' ,'N' ,'D' ,':' ,' ' ,000H
0004 414E443A                
0008 2000                    
                      35     
000A                  36     ?SC_10:
000A 0D0A00           37             DB  00DH,00AH,000H
                      38     
000D                  39     ?SC_13:
000D 08200800         40             DB  008H,' ' ,008H,000H
                      41     
                      42     ; #include <stdlib.h>
                      43     ; #include <ctype.h>    
                      44     ; #include "tdp.h"      
                      45     ;       
                      46     ; xdata char cmdbuf [1 + MAX_CMD_LEN];  
                      47     ; xdata unsigned char cmdndx;   
                      48     ;       
                      49     ; /* 初始化 */
                      50     ; void cmdb_init (void) {       
                      51     
----                  52             RSEG  ?PR?cmdb_init?CMDBUILD
0000                  53     cmdb_init:
                      54                             ; SOURCE LINE # 9
                      55     ;       cmdndx = 0;     
A51 MACRO ASSEMBLER  CMDBUILD                                                             04/01/2006 14:08:05 PAGE     2

                      56                             ; SOURCE LINE # 10
0000 E4               57             CLR     A
0001 900000   F       58             MOV     DPTR,#cmdndx
0004 F0               59             MOVX    @DPTR,A
                      60     ;       cmdbuf [0] = '\0';      
                      61                             ; SOURCE LINE # 11
0005 A3               62             INC     DPTR
0006 F0               63             MOVX    @DPTR,A
                      64     ; }     
                      65                             ; SOURCE LINE # 12
0007 22               66             RET     
                      67     ; END OF cmdb_init
                      68     
                      69     ;       
                      70     ; /* 命令提示"COMMAND" */
                      71     ; void cmdb_prompt (void) {     
                      72     
----                  73             RSEG  ?PR?cmdb_prompt?CMDBUILD
0000                  74     cmdb_prompt:
                      75             USING   0
                      76                             ; SOURCE LINE # 15
                      77     ;       com_puts ("COMMAND: "); 
                      78                             ; SOURCE LINE # 16
0000 7BFF             79             MOV     R3,#0FFH
0002 7A00     F       80             MOV     R2,#HIGH (?SC_0)
0004 7900     F       81             MOV     R1,#LOW (?SC_0)
0006 120000   F       82             LCALL   _com_puts
                      83     ;       com_puts (cmdbuf);      
                      84                             ; SOURCE LINE # 17
0009 7B01             85             MOV     R3,#01H
000B 7A00     F       86             MOV     R2,#HIGH (cmdbuf)
000D 7900     F       87             MOV     R1,#LOW (cmdbuf)
000F 020000   F       88             LJMP    _com_puts
                      89     ; END OF cmdb_prompt
                      90     
                      91     ; }     
                      92     ;       
                      93     ; /* 输入命令扫描 */
                      94     ; const char *cmdb_scan (void) {        
                      95     
----                  96             RSEG  ?PR?cmdb_scan?CMDBUILD
0000                  97     cmdb_scan:
                      98             USING   0
                      99                             ; SOURCE LINE # 21
0000                 100     ?C0003:
                     101     ;       int c;  
                     102     ; while (1)  {  
                     103                             ; SOURCE LINE # 23
                     104     ;   if ((c = com_getchar ()) == -1)     
                     105                             ; SOURCE LINE # 24
0000 120000   F      106             LCALL   com_getchar
0003 8E00     F      107             MOV     c?240,R6
0005 8F00     F      108             MOV     c?240+01H,R7
0007 EF              109             MOV     A,R7
0008 F4              110             CPL     A
0009 7002            111             JNZ     ?C0012
000B EE              112             MOV     A,R6
000C F4              113             CPL     A
000D                 114     ?C0012:
000D 6078            115             JZ      ?C0004
                     116     ;     break;    
                     117                             ; SOURCE LINE # 25
000F                 118     ?C0005:
                     119     ;   if (c == '\r')       {      
                     120                             ; SOURCE LINE # 26
000F E500     F      121             MOV     A,c?240+01H
A51 MACRO ASSEMBLER  CMDBUILD                                                             04/01/2006 14:08:05 PAGE     3

0011 640D            122             XRL     A,#0DH
0013 4500     F      123             ORL     A,c?240
0015 7010            124             JNZ     ?C0006
                     125     ;     com_puts ("\r\n");        
                     126                             ; SOURCE LINE # 27
0017 7BFF            127             MOV     R3,#0FFH
0019 7A00     F      128             MOV     R2,#HIGH (?SC_10)
001B 7900     F      129             MOV     R1,#LOW (?SC_10)
001D 120000   F      130             LCALL   _com_puts
                     131     ;     return (cmdbuf);  
                     132                             ; SOURCE LINE # 28
0020 7B01            133             MOV     R3,#01H
0022 7A00     F      134             MOV     R2,#HIGH (cmdbuf)
0024 7900     F      135             MOV     R1,#LOW (cmdbuf)
0026 22              136             RET     
                     137     ;   }