if(asc=='~'){a=0x20;return;}
if(asc=='!'){a=0x10;return;}
if(asc=='@'){a=0x08;return;}
if(asc=='#'){a=0x04;return;}
if(asc=='$'){a=0x02;return;}
if(asc=='%'){a=0x01;return;}
if(asc=='^'){a=0x80;return;}
if(asc=='&'){a=0x40;return;}
...