Kermit For Mac
(Click image for a gallery) Goto: Digital Equipment Corporation's 36-bit PDP-10 was, arguably, the birthplace of both the Internet and the Open Source movement, and without argument, the source of many of the most influential software applications, including EMACS, T EX, ISPELL (the first spell checker), MACSYMA, SCRIBE, numerous LISP dialects, MM and other pioneering email clients, and Kermit. Was written for the DECSYSTEM-20 at Columbia University, and transferred its first file from one DEC-20 serial port to another on 29 April 1981. The PDP-10 was the successor to the PDP-6, which appeared in 1964. PDP-10s came in four models: KA10, KI10, KL10, KS10.
Kermit Macaulay
The best-known operating systems were TOPS-10, TENEX, and TOPS-20. TENEX was done at Bolt Barenek and Newman (BBN) and required modified hardware; TOPS-20 was DEC's commercial adaptation of TENEX, and the DECSYSTEM-20 was a PDP-10 (KL10) with, (rather than ) cabinets, and far fewer visible lights, switches, knobs, buttons, and dials (a jumbo version of today's featureless box). The typical PDP-10 installation included multiple full-size cabinets for CPU, memory, controllers, networking front ends, and magnetic tape, plus washing-machine sized disk drives, line printers, and so on, requiring a large machine room with serious air conditioning and a great deal of 3-phase power; the electrical bill alone ran into the thousands of dollars per month, ditto for hardware maintenance. This was typical of any mainframe of the era. Later, a single-cabinet minicomputer version was released, called the 2020, based on the KS10 processor.
If I'm not mistaken, it could run on ordinary household current in regular ambient temperature. It was not noted for its speed. Other PDP-10 operating systems included MIT's ITS, Stanford's WAITS, Tymshare's TYMCOM-X and (for the 2020, TYMCOM-XX), the version of TENEX that Xerox PARC ran on their MAXC PDP-10 clone (more or less equivalent to a KA-10 with BBN pager, and maybe some others. The PDP-10 line was canceled by DEC in 1983 and gradually faded from view in the ensuing years. Manufacturing ceased in 1988. Some machines or clones remained operational through the 1990s (and a handful even to this day as museum pieces), and then in 2001 a renaissance of PDP-10 culture began with the release of several Unix- and/or Windows-based PDP-10 emulators (see ). The distinguishing feature of PDP-10 is its rich instruction set and, especially in TOPS-20, its powerful repertoire of system services.
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This combination made the PDP-10 more fun to program than any other computer before or since, and spawned a generation of prolific programmers ranging from Bill Gates to Richard Stallman. Kermit software is available for TOPS-10 and TOPS-20. Photo: A portion of a DECsystem-10 showing the KL10 operator control panel. DECSYSTEM-10 Kermit, or Kermit-10, was written in 1983-86 by Bob McQueen and Nick Bush at, Hoboken NJ, in Common Bliss. The latest release, from Nick Bush, consolidates the patches that have accumulated over the years and fixes a few bugs. Kermit-10 shares common source with Kermit-32 (the VAX/VMS version that was retired in 1987 in favor of ) and Kermit for the long-forgotten DEC Professional (PDP-11 based) workstation with P/OS. Recognizing that most sites never did and never will have a Common Bliss compiler, MACRO-10 versions of the source files are also available, output by Bliss-36, suitable for input to MACRO-10.
As of version 3(136) the Bliss and Macro files are once again synchronized and the binaries produced from either set of sources are identical. Back in the old days I could give you a wildcard specification to pick up all these files, but today's super-friendly Web browsers don't allow that, so we must list the files separately.