基于8086数码管矩阵键盘控制设计-全套资料

Posted 2021-05-15 Mr song song

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STACK	SEGMENT	  STACK
        DW		64  DUP (?)
STACK	ENDS
DATA	SEGMENT
TABLE	DB      3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH	    ;七段码表  
LDATA   DB      2   DUP(00H)
RDATA   DB      2   DUP(00H)
OPERATOR    DB  1   00H           
TEMPS   DW      100 DUP(?)
DATA	ENDS
CODE	SEGMENT
        ASSUME  CS:CODE,SS:STACK,DS:DATA
START:  MOV	    AX, DATA
        MOV	    DS, AX
        MOV	    SI, 3000H		    ;显示缓冲区初始化
	    MOV	    AL, 00H
        MOV	    [SI], AL
        MOV	    [SI+1], AL
        MOV	    [SI+2], AL
        MOV	    [SI+3], AL
        MOV	    DI, 3003H		    ;显示缓冲区尾地址
        MOV	    AL, 81H			    ;8255初始化
        OUT	    66H, AL             ;注意：控制口63H改为66H