AUX_IENABLE
ienb = read_aux_reg(AUX_IENABLE);
write_aux_reg(AUX_IENABLE, ienb);
ienb = read_aux_reg(AUX_IENABLE);
write_aux_reg(AUX_IENABLE, ienb);
ienb = read_aux_reg(AUX_IENABLE);
write_aux_reg(AUX_IENABLE, ienb);