SIBA_IMCFGLO
tmp = siba_read_4_sub(psd, SIBA_IMCFGLO);
siba_write_4_sub(psd, SIBA_IMCFGLO, tmp);
tmp = siba_read_4_sub(sd, SIBA_IMCFGLO) &
siba_write_4_sub(sd, SIBA_IMCFGLO, tmp);