int mode40x25[] = {0x38,0x28,0x2D,0x0A,0x1F,6,0x19,0x1C,2,7,6,7,0,0,0,0 };
        int loop_count = 0;     
        clrscr();
        outportb(0x3D8,0); /*disable video signal */
        for( ; loop_count < 0x0E; ++loop_count) {
                outportb( 0x3D4, loop_count ); /* set up CRT register */
                outportb( 0x3D5, mode40x25[loop_count]); /* write to reg */
        }
        outportb( 0x3D8, 0X28); /* switch in mode now */;