control_bic
out_8(&sw->control_bic, 0xff);
out_8(&sw->control_bic, SELECT);
out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS);
out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS);
out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS);
out_8(&sw->control_bic, DO_SEEK);
out_8(&sw->control_bic, WRITE_SECTORS | DO_ACTION);
out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS);
out_8(&sw->control_bic, DO_SEEK);
out_8(&sw->control_bic, WRITE_SECTORS | DO_ACTION);
out_8(&sw->control_bic, 0xff);
out_8(&sw->control_bic, DRIVE_ENABLE | INTR_ENABLE);