PE> Anyway, I am not very happy with COM.SYS because it
 PE> keeps on disabling itself (and then the MODE command 
 PE> doesn't work either), whenever someone drops carrier 
 PE> on me when I'm in the middle of a Binkley 2.50 session.

Try the ",I" com.sys parameter (type "HELP COM.SYS" and
look at the "S" parm).

By default the DD disables itself after 1000 errors (unexpected
interrupts).  If you encounter this situation,  it may be because of
overrun errors, which would be caused by bink being cpu starved.  I would
suggest upgrading to a newer version of Bink (If I am not mistaken,  2.50
uses the very first comm routines that I wrote,  which were dismal),  don't
run any DOS programs,  and/or boost the priority of btp.exe.



--- Maximus/2 2.01