TERM_CTL_SEL
asc_dvc->cfg->termination = TERM_CTL_SEL;
asc_dvc->cfg->termination = TERM_CTL_SEL | TERM_CTL_H;
TERM_CTL_SEL | TERM_CTL_H | TERM_CTL_L;
asc_dvc->cfg->termination |= TERM_CTL_SEL;
scsi_cfg1 |= (TERM_CTL_SEL | (~asc_dvc->cfg->termination & TERM_CTL));