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- Three totally different versions of Kermit for the Sperry (Univac) 1100.
-
-
- 1. THE PAUL STEVENS VERSION, U OF WISCONSIN
-
- * Sperry Univac 1100 KERMIT, initial release, December 1983.
-
- Contributed by:
-
- Paul Stevens
- Madison Academic Computing Center
- 1210 West Dayton Street
- University Of Wisconsin
- Madison, Wisconsin 53706
- (608) 262-9618
-
- Here is the text of his letter: "For what it is worth, here is our version of
- KERMIT that runs on Sperry 100/82. Documentation is meager. Instructions for
- users are in the listing itself in the form of `HELP' strings. Instructions
- for implementing on other 1100 computers amount to a few comments on page 1.
- Probably the most helpful comment consists of my name, address, and phone
- number. Good luck!"
-
- A subsequent phone conversation revealed that there actually is a manual, which
- you may obtain by sending a self-addressed stamped envelope to the above. It
- is not included with the distribution since there is no plain-text version of
- it (it was for a particular photocomposer using a text formatter than cannot
- produce plain text).
-
- The program is written in Univac 1100 Exec assembly language. The unusual use
- of alphabetic case in the listing is not a mistake; the author actually typed
- it in that way (a private joke).
-
- * Second Release, September 1984:
-
- Basically the same as the first release but with some error corrections,
- the ability to handle an additional kind of 1100 element, and the ability
- to receive files with very long lines (entire paragraphs).
-
- * Third Release, June 1985:
-
- Version 2.2 of Sperry Kermit, includes 8th-bit prefixing, repeat-count
- data compression, wildcard send, and server mode. Fixes timeout definition
- problems. Code for server mode & wildcards mostly from Grant Gilmour of Gulf
- Canada Resources, Inc.
-
- Fourth Release, September 1986 (Version 2.5):
-
- Gunnar Eklund's conditional assembly stuff to make it easier to port to
- "standard" Sperry systems.
-
- Maximum record size increased from 800 to 2000.
-
- Error corrections.
-
-
- 2. THE EDGAR BUTT VERSION, U OF MARYLAND
-
- Here is a Kermit implementation for the Sperry 1100 systems written
- in Pascal. It has been run successfully here at the University of Maryland,
- College Park, and at SUNY, Albany. Please add it to your selection
- of Kermits. I would appreciate feedback from anyone who tries it.
-
- The first page of code consists of comments explaining how to
- use and generate Kermit1100.
-
- Hope someone finds it useful,
-
- Edgar Butt (Butt@umd2.arpa)
- Computer Science Center
- University of Maryland
- College Park, Maryland 20742
- (301) 454-2946
-
- KERMIT1100 is yet another Kermit written to run on the Sperry (Univac)
- 1100 series of computers. It is written in Pascal to be compiled on
- the NOSC Pascal Compiler, version 2.2 or later. This compiler is
- available from the Computer Science Center of the University of
- Maryland, College Park, for a nominal service charge.
-
- Kermit aficianodos may notice that the structure of this version
- differs from other versions in that packets are read and sequence
- checked in the main program loop and are then dispatched to the
- proper input or output state with a single case statement.
- This structure has allowed the various state processes to be
- relatively uncluttered. While doing this implementation I
- discovered that NAK's are like tadpole tails. They seem like
- a neat idea at first, but as the frog emerges, they serve no
- useful purpose. Likewise, I have been unable to find a case
- in which NAK's are necessary. Sending an ACK for the last
- good packet received is just as good. If I'm wrong, I am sure
- that some swamp dweller out there will let me know.
- (Not to worry, I handle incoming NAK's even though they are not
- necessary.)
-
- By way of a quick synopsys of features, this version of Kermit has:
-
- Simple server mode - processes S and R packets
- 8-bit quoting (Turned on by Q-option)
- Repeat count prefixes
- Error packet generation and processing
-
- Kermit 1100 is called as a processor with the following control card:
-
- @Q*F.KERMIT,OPTIONS 1100SPEC,REMOTESPEC
-
- Q*F. is the file in which the processor resides.
- 1100SPEC is the 1100 file or element on which Kermit will operate.
- REMOTESPEC is the file name sent to the remote Kermit(a fib of sorts)
- OPTIONS:
- B - big buffers. Kermit1100 normally tells the remote Kermit to send
- packets that will fit in 84 characters. B-option causes it to
- request the maximum size Kermit packets (which ain't as big as you
- might wish) Make sure that your communications hardware and
- software will let the long packets get through.
- C - assume for sending or receiving that records are to be separated
- by CR instead of CR-LF
- L - log in the element KERMITLOG.MDSSS all file reads and writes and
- all communication sends and receives. MDSSS is the month, day and
- seconds/4 encoded base 32 (0,...,9,A,...,V). If a catalogued file
- 'KERMITLOG' is assignable, it is used. Otherwise a temporary file
- is created.
- Q - allow eight-bit quoting for sending or receiving. If the file
- being sent or received has 8-bit data and if the remote kermit
- is capable of 8-bit quoting, then all 8-bits of data can be
- sent or received.
- R - expect to receive data. Put the data in 1100SPEC if specified
- or in the file or element name sent from the remote Kermit. No
- transformation on the incoming name is done at present so it
- had better be good.
- S - send 1100SPEC to the remote Kermit. If REMOTESPEC is specified,
- put it in the file header packet. Otherwise put 1100SPEC in the
- packet.
- T - test mode. Send (actually print on a terminal) packets as if
- an S-option had been specified without reading ACK's.
- W - If the S-option is used, wait 30 seconds before starting to send
-
- Kermit1100 tries not to exit until an EOF is received in order to process
- multiple requests from the remote Kermit.
-
-
- 3. There is also a version of KERMIT for the Univac 1100 written in
- Ratfor to run under the Software Tools environment. See STKERMIT.*.
-