显示方式的改变 河北 袁津生 1993-11-19 程序如下: A>DEBUG CGA.COM<CR> 65CF:0100 31C0 XOR AX,AX 65CF:0102 8ED8 MOV DS,AX 65CF:0104 A01004 MOV AL, [0 4 1 0 ] 65CF:0107 24CF AND AL,CF 65CF:0109 0C20 OR AL,20 65CF:010B A21004 MOV [0410],AL 65CF:010E B80300 MOV AX,0003 65CF:0111 CD10 INT 10 65CF:0113 CD20 INT 20 A>DEBUG NCGACOM<CR> 65CF:0100 31C0 XOR AX,AX 65CF:0102 8ED8 MOV DS,AX 65CF:0104 A01004 MOV AL, [0410] 65CF:0107 24CF AND AL,CF 65CF:0109 0C30 OR AL,30 65CF:010B A21004 MOV [0410],AL 65CF:010E B400 MOV AH,00 65CF:0110 B007 MOV AL,07 65CF:0112 CD10 INT 10 65CF:0114 CD20 INT 20 (河北 袁津生)