wls@astrovax.UUCP (William L. Sebok) (03/06/84)
This bug may have been noted before but I am not sure when. Also please note
the other bug in the handling of the soft carrier flag in the dh driver
reported by Lou Salkind (i.e. the line hangs up when Carrier is dropped even
though the soft carrier flag is set).
Index: /sys/vaxuba/dh.c 4.2BSD
Description:
If the soft carrier flag for a dh line is set (dhsoftCAR), data terminal
ready (DTR) will never be set on open. Thus, terminals (or modems)
which require DTR will not work.
Repeat-By:
Connect a terminal or modem which requires DTR to a line with modem
control which has dhsoftCAR set. The device will not operate.
Fix:
*** dh.c.ORIG Fri Jul 29 10:33:35 1983
--- dh.c Thu Jan 26 02:21:49 1984
***************
*** 633,640
dm = unit >> 4;
tp = &dh11[unit];
unit &= 0xf;
! if (dm >= NDH || (ui = dminfo[dm]) == 0 || ui->ui_alive == 0 ||
! (dhsoftCAR[dm]&(1<<unit))) {
tp->t_state |= TS_CARR_ON;
return;
}
--- 633,639 -----
dm = unit >> 4;
tp = &dh11[unit];
unit &= 0xf;
! if (dm >= NDH || (ui = dminfo[dm]) == 0 || ui->ui_alive == 0) {
tp->t_state |= TS_CARR_ON;
return;
}
***************
--
Bill Sebok Princeton University, Astrophysics
{allegra,akgua,burl,cbosgd,decvax,ihnp4,kpno,princeton,vax135}!astrovax!wls