tty3270_add_ra
cp = tty3270_add_ra(tp, cp, -TTY3270_STATUS_AREA_SIZE, -1, 0);
cp = tty3270_add_ra(tp, cp, 0, lineno + 1, 0);
tty3270_add_ra(tp, buf, 0, tty3270_tty_rows(tp), 0);