key_12.lst

行列式按键

A51 MACRO ASSEMBLER  KEY_12                                                               11/14/2007 20:00:52 PAGE     1


MACRO ASSEMBLER A51 V7.01
OBJECT MODULE PLACED IN key_12.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE key_12.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1                                             ORG  0000H
0000 010D              2                                             AJMP Main
                       3     
000B                   4                                             ORG  000BH
000B 0136              5                                             AJMP CountInterruput
                       6     
000D 758160            7                     Main:           MOV SP,#60H
0010 7C00              8                                     MOV R4,#0       
0012 7D00              9                                             MOV R5,#0      ;R5指示按键的值的键码
0014 7540FF           10                                             MOV 40H,#0FFH    ;传递按键的值
0017 7830             11                                             MOV R0,#30H     ;R0指向显存的首址 30h（30H（个位）