s19-4.lst

市面上很流行的《手把手教你单片机》的光盘资料

A51 MACRO ASSEMBLER  S19_4                                                                02/29/2004 11:26:42 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN .\S19-4.OBJ
ASSEMBLER INVOKED BY: C:\KEIL\C51\BIN\A51.EXE .\S19-4.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;********89C51引脚定义********
  00B3                 2             RS BIT P3.3
  00B4                 3             R_W BIT P3.4
  00B5                 4             E BIT P3.5
  0090                 5             DB0_DB7 EQU P1
                       6     ;*******程序开始******
0000                   7             ORG 0000H
0000 020030            8             LJMP MAIN
0030                   9             ORG 030H
0030 758160           10     MAIN:   MOV SP,#60H
0033 12004A           11             LCALL INITIAL
0036 120091           12             LCALL CLS
0039 7C08             13             MOV R4,#8
003B 1200A0           14             LCALL SAVE_CGRAM
003E 74C0             15             MOV A,#11000000B
0040 120071           16             LCALL WRITE_COM
0043 7400             17             MOV A,#00H
0045 120081           18             LCALL WRITE_DATA
0048 80FE             19             SJMP $
                      20     ;****** 启动LCM子程序******
004A 7438             21     INITIAL:MOV A,#00111000B
004C 120071           22             LCALL WRITE_COM
004F 740C             23             MOV A,#00001100B 
0051 120071           24             LCALL WRITE_COM 
0054 7406             25             MOV A,#00000110B 
0056 120071           26             LCALL WRITE_COM 
0059 22               27             RET
                      28     ;******查询忙碌标志信号子程序******
005A C0E0             29     CHECK_BUSY:     PUSH ACC
005C C2B5             30     BUSY_LOOP:      CLR E
005E D2B4             31             SETB R_W
0060 C2B3             32             CLR RS
0062 D2B5             33             SETB E
0064 E590             34             MOV A, DB0_DB7
0066 C2B5             35             CLR E
0068 20E7F1           36             JB ACC.7,BUSY_LOOP
006B D0E0             37             POP ACC
006D 120097           38             LCALL DEL
0070 22               39             RET
                      40     ;****** 写指令到LCM子程序******
0071 12005A           41     WRITE_COM:      LCALL CHECK_BUSY
0074 C2B5             42             CLR E
0076 C2B3             43             CLR RS 
0078 C2B4             44             CLR R_W
007A D2B5             45             SETB E
007C F590             46             MOV DB0_DB7,A
007E C2B5             47             CLR E
0080 22               48             RET
                      49     ;****** 写数据到LCM子程序******
0081 12005A           50     WRITE_DATA:     LCALL CHECK_BUSY
0084 C2B5             51             CLR E
0086 D2B3             52             SETB RS 
0088 C2B4             53             CLR R_W
008A D2B5             54             SETB E
008C F590             55             MOV  DB0_DB7,A
008E C2B5             56             CLR E
0090 22               57             RET
                      58     ;*******清除LCM子程序*******
A51 MACRO ASSEMBLER  S19_4                                                                02/29/2004 11:26:42 PAGE     2

0091 7401             59     CLS:    MOV A,#00000001B
0093 120071           60             LCALL WRITE_COM
0096 22               61             RET
                      62     ;****延时2.7mS子程序****
0097 7E05             63     DEL:    MOV R6,#5
0099 7FF8             64     L1:     MOV R7,#248
009B DFFE             65             DJNZ R7,$
009D DEFA             66             DJNZ R6,L1
009F 22               67             RET
                      68     ;*******自定义图形写入CGRAM子程序********
00A0 7440             69     SAVE_CGRAM:     MOV A,#01000000B
00A2 120071           70             LCALL WRITE_COM
00A5 9000B1           71             MOV DPTR,#TAB
00A8 E4               72     CGRAM_LOOP:      CLR A
00A9 93               73             MOVC A,@A+DPTR
00AA 120081           74             LCALL WRITE_DATA
00AD A3               75             INC DPTR
00AE DCF8             76             DJNZ R4, CGRAM_LOOP
00B0 22               77             RET
                      78     ;*******字符串************
00B1 04041F15         79     TAB:    DB 04H,04H,1FH,15H,1FH,04H,04H,00H
00B5 1F040400                
                      80             END
A51 MACRO ASSEMBLER  S19_4                                                                02/29/2004 11:26:42 PAGE     3

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


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

ACC. . . . . . . .  D ADDR   00E0H   A   
BUSY_LOOP. . . . .  C ADDR   005CH   A   
CGRAM_LOOP . . . .  C ADDR   00A8H   A   
CHECK_BUSY . . . .  C ADDR   005AH   A   
CLS. . . . . . . .  C ADDR   0091H   A   
DB0_DB7. . . . . .  D ADDR   0090H   A   
DEL. . . . . . . .  C ADDR   0097H   A   
E. . . . . . . . .  B ADDR   00B0H.5 A   
INITIAL. . . . . .  C ADDR   004AH   A   
L1 . . . . . . . .  C ADDR   0099H   A   
MAIN . . . . . . .  C ADDR   0030H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
P3 . . . . . . . .  D ADDR   00B0H   A   
RS . . . . . . . .  B ADDR   00B0H.3 A   
R_W. . . . . . . .  B ADDR   00B0H.4 A   
SAVE_CGRAM . . . .  C ADDR   00A0H   A   
SP . . . . . . . .  D ADDR   0081H   A   
TAB. . . . . . . .  C ADDR   00B1H   A   
WRITE_COM. . . . .  C ADDR   0071H   A   
WRITE_DATA . . . .  C ADDR   0081H   A   


REGISTER BANK(S) USED: 0 


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