FD_SIZECODE
raw_cmd->cmd[F_SIZECODE] = FD_SIZECODE(_floppy);
(_floppy->sect << 2) % (1 << FD_SIZECODE(_floppy)) ||
raw_cmd->cmd[SIZECODE] = FD_SIZECODE(_floppy);
(unsigned char)((g->sect << 2) >> FD_SIZECODE(g)) == 0 ||
512 : 128 << FD_SIZECODE(floppy) )