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-
- "USER FRIENDLY" for July 16, 1994
- by Calvin Demmon
-
- ("User Friendly" runs each Saturday in the Monterey County Herald,
- Monterey, Calif. It is also posted each week on the Marshall
- bulletin board -- phone number listed at bottom.)
-
-
-
-
- GARY KILDALL'S WORK LIVES ON
-
- The inventor of the C-prompt is dead.
-
- When Gary Kildall's death this week at Community Hospital of the Monterey
- Peninsula was reported, the stories focused, quite properly, on his creation
- of the CP/M operating system, a major contribution to the development of
- personal computing.
-
- Most PC users no longer use CP/M, but everyone in the DOS-compatible world
- still sees Kildall's work when DOS is running on the screen.
-
- That little A, B, or C with the arrowpoint after it is the way Kildall
- solved the problem of identifying disk drives on a system. It's the kind of
- thing you take for granted if you've been using it for years, but if it hadn't
- been for Kildall, some other display might be on your screen at the operating
- system level.
-
- I met Kildall a couple of times, in the course of interviewing him for The
- Herald and for a San Francisco Bay area computer magazine for which I wrote a
- story about his forays into the then-uncharted world of CD-ROM.
-
- I liked him very much. He was intelligent, friendly and slyly humorous.
-
- And he was, first and foremost, a teacher. He had been a professor of
- computer science at the Naval Postgraduate School in Monterey when, in 1972,
- he wrote the first version of CP/M. His professorial habits never left him
- even after he became one of the most famous members of the personal computing
- pantheon.
-
- If you happened to be standing near a blackboard, Kildall couldn't resist
- picking up a piece of chalk and sketching out charts and timelines and bell
- curves to illustrate whatever he was saying. What he had to say was nearly
- always fascinating.
-
- Digital Research, the company that Kildall founded, brought hundreds of
- talented people to the Monterey area as it expanded. For a time it seemed we
- might have a Silicon Peninsula here, with Digital Research booming in Pacific
- Grove and Lifetree Software producing Volkswriter in Monterey.
-
- But Lifetree is defunct, and Digital Research has been absorbed into Novell.
- Digital Research never quite recovered from IBM's anointing of MS-DOS
- instead of CP/M as the operating system for its personal computers, and none
- of Digital's other products were ever so important or so universal as CP/M had
- been.
-
- The first full-featured computer I ever owned, an Osborne I, was CP/M-based.
- I learned my way around on that system, and when I finally switched to a DOS
- machine, it wasn't all that different.
-
- MS-DOS, after all, was basically just a variation of CP/M. DOS featured the
- A, B and C prompts. Its philosophy and many of its system commands were
- identical.
-
- That was no surprise to Kildall, who told me that when he examined the first
- version of MS-DOS he found many lines of programming code that he recognized
- because he had written them himself.
-
- Kildall could have sued Microsoft, but IBM promised to offer both
- PC-DOS (its version of MS-DOS) and CP/ M with its IBM PCs. A lawsuit might
- have stalled what looked to Kildall like a good marketing opportunity for
- CP/M.
-
- There was a catch, though, and it doomed CP/M: IBM priced PC-DOS at $40 and
- CP/M at $240. DOS was soon the industry standard, and CP/M faded into
- obscurity.
-
- But CP/M isn't dead.
-
- Thursday, when I checked the comp.os.cpm newsgroup on the Usenet network
- (via the Internet), there were 30 fresh messages relating to CP/M.
-
- Most were plaintive cries for help with ancient CP/M-based computers bearing
- names such as Amstrad, CompuPro, Kaypro and Cromemco.
-
- And about half-a-dozen folks had posted messages reporting Kildall's death,
- including one Silicon Valley type who included (in the kind of copyright
- violation that is typical in cyberspace) the complete Kildall obituary from
- the San Jose Mercury.
-
- Among the other messages was one titled "Wanted: CP/M Boot Disk."
- What that guy wanted was what Gary Kildall created 22 years ago, and what we
- all wanted not long ago -- the key piece of software that made the personal
- computer revolution not only possible but inevitable.
-