“The History of CP/M, THE EVOLUTION OF AN INDUSTRY: ONE PERSON'S VIEWPOINT”. Dr. Dobb's Journal. pp. 6–7 (January 1980). 2016年11月24日時点のオリジナルよりアーカイブ。2013年6月3日閲覧。 “[…] The first commercial licensing of CP/M took place in 1975 with contracts between Digital Systems（英語版） and Omron of America for use in their intelligent terminal, and with Lawrence Livermore Laboratories 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, Glenn Ewing 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 IMDOS（英語版）. […]”
“The History of CP/M, THE EVOLUTION OF AN INDUSTRY: ONE PERSON'S VIEWPOINT”. Dr. Dobb's Journal. pp. 6–7 (January 1980). 2016年11月24日時点のオリジナルよりアーカイブ。2013年6月3日閲覧。 “[…] The first commercial licensing of CP/M took place in 1975 with contracts between Digital Systems（英語版） and Omron of America for use in their intelligent terminal, and with Lawrence Livermore Laboratories 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, Glenn Ewing 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 IMDOS（英語版）. […]”
“The History of CP/M, THE EVOLUTION OF AN INDUSTRY: ONE PERSON'S VIEWPOINT”. Dr. Dobb's Journal. pp. 6–7 (January 1980). 2016年11月24日時点のオリジナルよりアーカイブ。2013年6月3日閲覧。 “[…] The first commercial licensing of CP/M took place in 1975 with contracts between Digital Systems（英語版） and Omron of America for use in their intelligent terminal, and with Lawrence Livermore Laboratories 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, Glenn Ewing 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 IMDOS（英語版）. […]”
