• Thumbnail for UCSD Pascal
    UCSD Pascal is a Pascal programming language system that runs on the UCSD p-System, a portable, highly machine-independent operating system. UCSD Pascal...
    16 KB (1,760 words) - 01:22, 4 August 2025
  • For the computer p-System, see UCSD p-System. A P system is a computational model in the field of computer science that performs calculations using a...
    16 KB (2,242 words) - 04:13, 2 June 2025
  • of P-Code machines is the P-Machine of the Pascal-P system. The developers of the UCSD Pascal implementation within this system construed the P in P-code...
    20 KB (2,433 words) - 15:27, 16 July 2025
  • Thumbnail for IBM Displaywriter System
    primary operating system for the Displaywriter is IBM's internally developed word processing software titled "Textpack", but UCSD p-System, CP/M-86, and MS-DOS...
    30 KB (3,247 words) - 19:16, 13 January 2025
  • operating systems. When the original IBM-PC was created in 1980, there were three leading competing operating systems: PC DOS, CP/M-86, and UCSD p-System, while...
    6 KB (712 words) - 15:44, 24 June 2025
  • Apple Pascal (category Disk operating systems)
    UCSD Pascal. Just like other UCSD Pascal implementations, it ran on its own operating system (Apple Pascal Operating System, a derivative of UCSD p-System...
    6 KB (594 words) - 18:47, 12 July 2025
  • AMD64. UCSD Pascal branched off Pascal-P2, where Kenneth Bowles used it to create the interpretive UCSD p-System. It was one of three operating systems available...
    70 KB (8,514 words) - 19:00, 25 June 2025
  • Thumbnail for Terak 8510/a
    version of UNIX version 6. It was the first personal machine on which the UCSD p-System was widely used. Various universities in the USA used it in the late...
    3 KB (226 words) - 09:11, 15 April 2025
  • general and technical information for a number of file systems. All widely used file systems record a last modified time stamp (also known as "mtime")...
    147 KB (5,412 words) - 14:17, 6 August 2025
  • Thumbnail for University of California, San Diego
    The University of California, San Diego (UC San Diego, or colloquially, UCSD) is a public land-grant research university in San Diego, California, United...
    157 KB (13,868 words) - 23:11, 4 August 2025
  • A system programming language is a programming language used for system programming; such languages are designed for writing system software, which usually...
    14 KB (902 words) - 17:37, 17 July 2025
  • designed specifically to run the UCSD p-System efficiently. Compared to other microcomputers, which use a machine language p-code interpreter, the Pascal...
    10 KB (1,255 words) - 15:15, 29 May 2025
  • Thumbnail for IBM Personal Computer
    IBM initially announced intent to support multiple operating systems: CP/M-86, UCSD p-System, and an in-house product called IBM PC DOS, based on 86-DOS...
    62 KB (6,608 words) - 11:26, 4 August 2025
  • Inc.) UCSD p-System (portable complete programming environment/operating system/virtual machine developed by a long running student project at UCSD; directed...
    73 KB (8,393 words) - 14:24, 3 August 2025
  • of NLS (oN-Line System) and was ported to many systems including the UNIVAC 1108, GE 645, SDS 940, ICL 1906A, PERQ, and UCSD p-System. This is a complete...
    9 KB (1,028 words) - 13:57, 29 July 2025
  • Thumbnail for BBC Micro
    "PASCAL on the p-SYSTEM". Micro User. pp. 115, 117. Retrieved 2 July 2024. Maher, John (January 1985). "Acornsoft's UCSD Pascal System". Beebug. pp. 7–10...
    101 KB (9,929 words) - 06:45, 29 June 2025
  • MVS/System Extensions (MVS/SE) OS4 (Naked Mini 4) PTDOS TRIPOS UCSD p-System (First released version) 1979 Atari DOS 3BSD CP-6 Idris MP/M MVS/System Extensions...
    70 KB (3,407 words) - 09:10, 21 July 2025
  • Thumbnail for Jef Raskin
    II, Raskin went back to his contacts at UCSD and encouraged them to port the UCSD P-System operating system, which incorporated a version of the Pascal...
    29 KB (3,268 words) - 23:18, 9 July 2025
  • history of 16-bit x86 DOS-family disk operating systems from 1980 to present. Non-x86 operating systems named "DOS" are not part of the scope of this timeline...
    235 KB (7,270 words) - 09:03, 27 May 2025
  • Thumbnail for Olivetti M19
    LogAbax. The machine came with three operating systems: MS-DOS 2.11 / 3.1, Concurrent DOS and UCSD p-System. It was capable of displaying graphics in standard...
    10 KB (949 words) - 23:42, 30 December 2024
  • Thumbnail for Western Digital
    implement DEC's LSI-11 system, the WD16, and their own Pascal MicroEngine microcomputer which ran the UCSD p-System Version III and UCSD Pascal. However, the...
    61 KB (5,622 words) - 06:02, 6 August 2025
  • Thumbnail for History of personal computers
    bundling an operating system. Three operating system choices would be offered for separate purchase: PC-DOS, CP/M and UCSD p-System. Digital Research accepted...
    157 KB (20,640 words) - 05:38, 6 August 2025
  • compiler, also known as m-code P-code, UCSD Pascal system bytecode Precision code, used in the Global Positioning System P-codes, engine diagnostic codes;...
    863 bytes (154 words) - 07:01, 19 September 2024
  • standard Concept software. The UCSD p-System was available, and a Pascal compiler was available supporting most UCSD extensions FORTRAN was also standard...
    20 KB (2,155 words) - 14:58, 30 May 2025
  • Thumbnail for TI-99/4A
    KB RAM expansion card RS-232 and parallel port card P-code card, implementing the UCSD p-system IV.0 by acting as a ROM-disk Diskette drive control card...
    53 KB (6,435 words) - 07:05, 18 July 2025
  • Thumbnail for IBM PC compatible
    1-2-3 to market and included more functions. Context MBA was written in UCSD p-System, making it very portable but too slow to be truly usable on a PC. 1-2-3...
    73 KB (8,115 words) - 11:03, 26 July 2025
  • Thumbnail for IBM PC DOS
    IBM PC DOS (category Discontinued operating systems)
    CP/M-86, which became available six months after PC DOS, and UCSD p-System operating systems. IBM's expectation proved correct: one survey found that 96...
    37 KB (3,705 words) - 09:44, 29 July 2025
  • proposed writing the system one time to a virtual architecture. The successful academic implementation of Pascal was the UCSD p-System developed by Kenneth...
    13 KB (1,877 words) - 16:11, 12 December 2024
  • Thumbnail for Apple II Plus
    77. Apple Pascal and FORTRAN ran under a non-DOS operating system based on UCSD P-System, which had its own disk format and included a "virtual machine"...
    15 KB (1,844 words) - 16:14, 7 March 2025
  • Thumbnail for CP/M-86
    CP/M-86 (category Digital Research operating systems)
    schedule. CP/M-86 was one of three operating systems available from IBM, with PC DOS and UCSD p-System. Digital Research's adaptation of CP/M-86 for...
    31 KB (2,569 words) - 17:24, 22 July 2025