There was only a little problem: Gary didn't own a computer running During this period, PL/1 was very often used for mainframes and therefore Intel agreed at once the compiler was then called PL/M (= Programming Language for Microprocessors). He was so enthusiastic about the 8080, that he offered to the Intel managers to build a compiler for PL/1 (= Programming Language Number 1). In 1973, when Gary attended the presentation of the new Intel 8080 CPU, his dream appeared much nearer to reality. So it's quite easy to understand that Gary envisioned a computer all for himself that he could set up near to his beloved young wife. There was only one thing that disturbed him very much: Everyday, he had to cover more than a hundred miles to arrive at his working place. He liked the job, most of all because it offered him quite a lot of freedom. In 1972 young Gary had achieved his doctor's degree in computer science and was then employed at the military university of Monterey, California. On this occasion, we should remember how the operating system CP/M came into being: Honestly, did you ever think about why your hard disk isĪddressed as C: or where the DOS command DIR comes from?!Īlready four years have passed since Gary Kildall, the creator of CP/M, has died suddenly and unexpectedly - being only 52 years old. Other influences are less clear, but undisputable.Īctually, many things we now take for granted, have their origin in the work of a single man, "TOPS-10", at least concerning file and device naming conventions,Īs well as for some command designations. Many former CP/M applications have been ported to DOS later on, in first placeĬP/M on the other hand is based upon the Operating System for the DEC PDP-10, Which was achieved by Microsoft for the first IBM PC. MS-DOS itself derivesįrom QDOS (Quick and dirty operating system), a CP/M clone written by Tim Patterson, The basis for today's Microsoft DOS/Windows systems. Furthermore, it was the very first DISK Operating System (DOS), and therefore In the late seventies and early eighties CP/M was the undisputed standard in operating systems for This Digital Research product can rightfully be regarded as a standard.» Spreading as CP/M for micro computers, based on the CPU types 8080, 8085 or Z80. But none of them has achieved such an enormous «Even in micro computers, you can find operating systems of all types and sizes,ĭepending on computer type and application.
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