Gary Kildall

"The first commercial licensing of took place in 1975 with contracts between Digital Systems and for use in their intelligent terminal, and with where CP/M was used to monitor programs in the Octopus network. Little attention was paid to CP/M for about a year. In my spare time, I worked to improve overall facilities... By this time, CP/M had been adapted for four different controllers.... In 1976, approached me with a problem: Imsai, Incorporated, for whom Glenn consulted, had shipped a large number of disk subsystems with a promise that an operating system would follow. I was somewhat reluctant to adapt CP/M to yet another controller, and thus the notion of a separated Basic I/O System (BIOS) evolved. In principle, the hardware dependent portions of CP/M were concentrated in the BIOS, thus allowing Glenn, or anyone else, to adapt CP/M to the Imsai equipment. Imsai was subsequently licensed to distribute CP/M version 1.3 which eventually evolved into an operating system called"

"It was Garys bad luck that put him up against the most skilled businessman of all time. Anyone looks like a failure standing next to Bill Gates."

"I expected too much of educators. I expected them to understand, in a sense, the sugar-coated concepts of LISP used in AI that were embodied in the Logo language. It was then that I learned that computers were built to make money, not minds."

"You need to study other peoples work. Their approaches to problem solving and the tools they use give you a fresh way to look at your own work."

"The ALGOL compiler was probably one of the nicest pieces of code to come out at that time. I spent hours trying to fix and change the compiler. Working with it so closely affected the way I think about programming and had a profound influence on my style."

"Its fun to sit at a terminal and let the code flow. It sounds strange, but it just comes out my brain; once Im started, I dont have to think about it."

"Ive told this story to lots of people and they just wont get it. All they want to get is that IBM showed up and Gary was off flying his aeroplane. The problem is that this is very wrong.… The real issue wasnt that Gary refused to talk to IBM. The real issue was that Microsoft had a much better vision for the business. Gary was very laid-back. He did not care that much."

"Intel had hired him a few months earlier to write a control program monitor to run on their little demo system for 8008 and now 8080.... Glenn knew this and he would be talking with Gary, and he started twisting Garys arm. He said, "Hey Gary, why cant we run this in this IMSAI?" "The I/Os all different, wont run." But Glenn persists and finally makes a deal with Gary. He says, "Okay Gary, if you split out the I/O, Ill write the BIOS, basic I/Os system," and Glenn named it then. "Well split it out separately. Ill write that part, as long as you can make a division in the program there." And he got Gary to do that and Glenn put those two pieces together and was running Garys CP/M on an IMSAI. Glenn let us know that, and it wasnt too much later than Bill was down there making arrangements with Gary Kildall to license CP/M.... Now that the BIOS is separated out, anybody could write a BIOS for their machine, if it was 8080-based, and run this, so he started selling that separately under the company Digital Research that he formed and did quite well."

"When we failed to produce an operating system in a timely manner, Glenn started talking with Gary about CPM, which Gary had written for Intel under contract. It took several months of twisting Garys arm to get Gary to port it to the 8080. The final success came when Glenn talked Gary into just separating the I/O from the rest of it, with Glenn promising to re-write the I/O module for the IMSAI 8080 (which he did). So CPM on the IMSAI was a joint effort between Glenn and Gary."

"Ask Bill [Gates] why the string in [MS-DOS] function 9 is terminated by a dollar sign. Ask him, because he cant answer. Only I know that."