74ls245.lst

来自「集合了很多的例程」· LST 代码 · 共 47 行

A51 MACRO ASSEMBLER  74LS245                                                              05/01/2007 08:03:02 PAGE     1


MACRO ASSEMBLER A51 V8.00d
OBJECT MODULE PLACED IN 74LS245.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE 74LS245.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1                     ORG 0000H
0000 75A0BF            2     START:  MOV P2,#0BFH
0003 E580              3                     MOV A,P0
0005 F4                4                     CPL A
0006 75A07F            5                     MOV P2,#7FH
0009 00                6                     NOP
000A 00                7                     NOP
000B 00                8                     NOP
000C F580              9                     MOV P0,A
000E 120013           10                     LCALL DELAY
                      11                     
0011 80ED             12                     SJMP START
0013 7EC8             13     DELAY:  MOV R6,#200
0015 7F7E             14     DE1:    MOV R7,#126
0017 DFFE             15                     DJNZ R7,$
0019 DEFA             16                     DJNZ R6,DE1
001B 22               17                     RET
                      18                     END
A51 MACRO ASSEMBLER  74LS245                                                              05/01/2007 08:03:02 PAGE     2

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


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

DE1. . . . . . . .  C ADDR   0015H   A   
DELAY. . . . . . .  C ADDR   0013H   A   
P0 . . . . . . . .  D ADDR   0080H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   
START. . . . . . .  C ADDR   0000H   A   


REGISTER BANK(S) USED: 0 


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