Stuff

switch (writelength_upper){    case 0:        writemask_upper = 1;        break;    case 1:        writemask_upper = 3;        break;    case 2:        writemask_upper = 7;        break;    case 3:        writemask_upper = 15;        break;    case 4:        writemask_upper = 31;        break;    case 5:        writemask_upper = 63;        break;    case 6:        writemask_upper = 127;        break;    case 7:        writemask_upper = 255;        break;    case 8:        writemask_upper = 511;        break;    case 9:        writemask_upper = 1023;        break;    case 10:        writemask_upper = 2047;        break;    case 11:        writemask_upper = 4095;        break;    case 12:        writemask_upper = 8191;        break;    case 13:        writemask_upper = 16383;        break;    case 14:        writemask_upper = 32767;        break;    case 15:        writemask_upper = 65535;        break;    case 16:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 17:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 18:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 19:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 20:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 21:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 22:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 23:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 24:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 25:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 26:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 27:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 28:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 29:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 30:        writemask_upper = 2 ^ (writelength_upper + 1) - 1;        break;    case 31:        //writemask_upper = 2 ^ (writelength_upper + 1) - 1;        writemask_upper = 4294967295;        break;    default:        writemask_upper = 1;        break;}