Jelena Mamčenko Operating Systems Lecture Notes on Operating Systems 22Harris's Vulcan, Bell Labs' Unix, and so on. In microcomputers, SWTPC's 6800 and 6809 machines used TSC's FLEX disk operating system, Radio Shack's TRS-80 machines used TRS-DOS, their Color Computer used OS-9, and most of the Intel 8080 based machines from IMSAI, MITS (makers of the legendary Altair 8800), Cromemco, North Star, etc used the CP/M-80 disk operating system. See list of operating systems. Usually, a disk operating system was loaded from a disk. Only a very few comparable DOSes were stored elsewhere than floppy disks; among these exceptions were the British BBC Micro's optional Disc Filing System, DFS, offered as a kit with a disk controller chip, a ROM chip, and a handful of logic chips, to be installed inside the computer; and Commodore's CBM DOS, located in a ROM chip in each disk drive. 20Examples of disk operating systems that were extensions to the OS •The DOSoperating system for the Apple Computer's Apple II family of computers. This
This is the end of the preview.
access the rest of the document.
Floppy disk, CP/M, disk controller chip, Disk operating system, Disk Operating Systems