estes@tty3b.UUCP (08/22/83)
Thanx for the numerous replies for my request for information about IOT
and EMT signals. Many persons (~7) wrote to say that EMT stood for
"emulator trap" and IOT stood for "I/O trap".
In the meantime, I caught one of my errors using sdb (as several people
later recommended). For those who are interested, I was moving a program
from a VAX running 4.1bsd to a 3B20S running UNIX 5.0 and to a PDP 11/70
running UNIX 4.0. I got the EMT trap on the 3B, and the IOT on the PDP 11,
with two different programs. (I had two different problems, both of which
I caused as I was trying to compensate for differing system calls.)
Thanx once again to all of you for the rapid and numerous responses.
Ted Estes
Teletype Corp., Skokie, IL
{we13, otuxa}!tty3b!estes