case 0x7e:TR0=1;break;//0 ??????????????
case 0x7d:num1=10;break;//1
case 0x7b:num1=15;break;//2
case 0x77:num1=20;break;//3
case 0xbe:num1++;break;//4
case 0xbd:num1--;break;//5
case 0xbb:d=6;break;//6
case 0xb7:d=7;break;//7
case 0xde:d=8;break;//8
case 0xdd:num1=9;break;//9