1168【毕设课设】基于8086的LED点阵汉字流水显示设计

 
 ROWLOW  EQU 0B004H;行低八位
 ROWHIGH EQU 0B006H;行高八位
 COLLOW  EQU 0B000H;列低八位  
 COLHIGH EQU 0B002H;列高八位 
 
 CODE SEGMENT
    ASSUME CS:CODE,DS:DATA
 
 DELAY PROC NEAR 
    PUSH CX
    MOV CX,100
 DELAY1:
    LOOP DELAY1
    POP CX
    RET
 DELAY ENDP;延时
 
 START:
    MOV AX,DATA
    MOV DS,AX

    MOV SI,OFFSET FONT
 
 MAIN:
    MOV AL,0
    MOV DX,ROWLOW
    OUT DX,AL
    MOV DX,COLHIGH
    OUT DX,AL
    MOV CHARINDEX,0;灯灭
 NEXTCHAR:
   MOV DELAYCNT,50
 LOOP1:
   MOV BITMASK,1