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- Newsgroups: vmsnet.pdp-11
- Path: sparky!uunet!caen!batcomputer!cornell!chapman
- From: chapman@cs.cornell.edu (Richard Chapman)
- Subject: Re: f77, kermit and rsx-11
- Message-ID: <1992Nov10.173722.7553@cs.cornell.edu>
- Organization: Cornell Univ. CS Dept, Ithaca NY 14853
- References: <1992Nov9.193113.11680@cs.cornell.edu> <1992Nov11.001440.2102@zl2tnm.gen.nz>
- Date: Tue, 10 Nov 1992 17:37:22 GMT
- Lines: 47
-
- don@zl2tnm.gen.nz writes:
-
- >In article <1992Nov9.193113.11680@cs.cornell.edu>, chapman@cs.cornell.edu (Richard Chapman) writes:
- >> I have a 1200 baud modem connected to an ACT Quadrasync card
- >> (emulates four DL11's), and I have been running kermit just fine under
- >> RT-11 using this setup. Now, under rsx-11 I'd like to do the same thing.
-
- >> Then, when I try to set the speed to 1200, I get a message that the
- >> receive buffer is too small. (but I have no idea how to make it
-
- >Ummm, since when have DL11s had settable baud rates? All the ones I've
- >seen have required fiddling with DIPs or wirewrapping jumpers. SET
- >SPEED=TTn:xxxx doesn't work for DL11 devices, and it's probably a bug
- >that setting the speed from Kermit doesn't give an error message to that
- >effect.
-
- >Try configuring the device to the correct speed, use SET LINE and go for
- >it.
-
- >NB: a DL11 (or compat) is very very dumb and only has a single character
- >buffer. Using it for outgoing modem access at any kind of speed will
- >probably result in lost characters. An 11/34A with DL11s under RSX-11M
- >V4.1 couldn't cope at 2400; sticking the modem on a DZ11 port fixed the
- >problem, due to the silo buffer on the DZ11.
-
- >Kermit definitely worked for me under the above setup (on the DZ11 and
- >DL11, apart from the odd lost character when on the DL11).
-
- Hmmmm. Of course, you are right that DL11's do not have settable baud
- rates. I suppose I will try to scare up an DZ11 and try that, but overrunning
- the buffer shouldn't cause the whole system to crash, should it? I am
- considering the hypothesis that the memory board is bad -- opinions?
- I also found the following tidbit on the kermit source disk pack:
-
- ; Due to a change in the Terminal Handler, a slaved terminal must also
- ; be attached or else unsolicited input will NOT be kept in the
- ; typeahead buffer. (See Software Dispatch Dec. 1983).
- ; Terminal Emulation sure works better with this fix !!
-
- From the one paragraph I have found in the "Guide to Operations" defining
- "attached" it seems that that is something a task does, not a user typing
- commands to a CLI. I can find no other documentation on attaching, and
- I can't find Software Dispatch (is that a journal?) in our libraries.
- What does this mean?
-
-
-
-