• Thumbnail for IBM PCjr
    The IBM PCjr (pronounced "PC junior") was a home computer produced and marketed by IBM from March 1984 to May 1985, intended as a lower-cost variant of...
    67 KB (7,593 words) - 21:45, 12 April 2025
  • Model 5150 (IBM PC) in 1981. IBM released four different versions of the Microsoft BASIC interpreter, licensed from Microsoft for the PC and PCjr. They are...
    14 KB (1,720 words) - 14:53, 13 April 2025
  • Thumbnail for Tandy Graphics Adapter
    standard for the Tandy 1000 series of IBM PC compatibles, which has compatibility with the video subsystem of the IBM PCjr but became a standard in its own...
    19 KB (2,110 words) - 01:52, 14 May 2025
  • Thumbnail for King's Quest I
    adventure game developed by Sierra On-Line and published originally for the IBM PCjr in 1984 and later for several other systems between 1984 and 1989. The...
    24 KB (2,736 words) - 04:00, 12 May 2025
  • Thumbnail for IBM PS/1
    personal computers that marked IBM's return to the home market in 1990, five years after the IBM PCjr. It was replaced by the IBM Aptiva in September 1994....
    17 KB (1,214 words) - 03:23, 8 January 2025
  • Thumbnail for IBM JX
    Designed in Japan, it was based on the technology of the IBM PCjr and was designated the IBM 5511. It was targeted in the Australasian market towards...
    14 KB (1,702 words) - 13:15, 28 December 2024
  • interrupts. The IBM PCjr using the Video Gate Array graphics chip supported a 'vertical retrace interrupt' implemented as IRQ5. Later in 1984, IBM introduced...
    8 KB (953 words) - 08:11, 29 July 2024
  • Thumbnail for List of IBM Personal Computer models
    The IBM Personal Computer, commonly known as the IBM PC, spanned multiple models in its first generation (including the PCjr, the Portable PC, the XT,...
    43 KB (1,418 words) - 14:18, 29 April 2025
  • Thumbnail for ROM cartridge
    State Command Modules and were not directly mapped to the system bus) and IBM PCjr (where the cartridge was mapped into BIOS space). Some arcade system boards...
    21 KB (2,082 words) - 05:29, 1 May 2025
  • adventure game that Sierra and IBM wished to market in order to attract consumers to IBM's lower-cost home computer, the IBM PCjr. AGI was capable of running...
    11 KB (851 words) - 17:10, 4 May 2025
  • VIC-20, Commodore 64, and IBM PC (as a self-booting disk). A cartridge version was a 1984 launch title for the IBM PCjr, announced in late 1983. The...
    8 KB (824 words) - 21:53, 9 May 2025
  • faster and more reliable digital transmission. 1983: IBM PCjr. IBM announces the widely anticipated PCjr., an attempt to enter the home computing marketplace...
    217 KB (24,520 words) - 13:29, 30 April 2025
  • developer of Windmill games. In 1984, Digger was converted to run on IBM PCjr and IBM JX. Features of Digger are similar to those in the arcade games Mr...
    6 KB (731 words) - 19:59, 21 March 2025
  • The original IBM Personal Computer and IBM PCjr includes support for storing data and programs on compact cassette tape. It was common for home computers...
    7 KB (760 words) - 02:20, 20 March 2025
  • released for the Apple II, TRS-80 Color Computer, Commodore 64, IBM PC and the IBM PCjr. It was followed by a more difficult sequel, Robot Odyssey. It...
    7 KB (707 words) - 10:50, 24 April 2025
  • Thumbnail for IBM PC DOS
    half-height floppy drives and the new IBM PCjr. In 1983, Compaq released the Compaq Portable, the first 100% IBM PC compatible and licensed their own OEM...
    37 KB (3,705 words) - 01:09, 30 April 2025
  • Thumbnail for Tandy 1000
    maker of TRS-80 computers, said about the new IBM PCjr: "I'm sure a lot of people will be coming out with PCjr look-alikes. The market is big." While preparing...
    57 KB (7,167 words) - 19:13, 5 April 2025
  • role-playing video game published by IBM for the IBM PCjr in 1984. It was written by Marshal Linder and Scott Edwards, two IBM employees, and marketed as an...
    4 KB (449 words) - 01:16, 2 May 2025
  • Thumbnail for Game port
    adapted to the IBM with the addition of another button on the back of the case. When IBM finally did release a joystick, for the IBM PCjr, it was a version...
    18 KB (2,058 words) - 15:26, 15 November 2024
  • Thumbnail for Home computer
    until IBM moved into the "personal computing" market in 1981."". Lowendmac.com. 25 September 2006. Retrieved 2013-04-09. "IBM PCjr". "IBM PCjr". "Commodore...
    94 KB (11,752 words) - 15:27, 12 May 2025
  • Alley Cat (video game) (category IBM software)
    reach his love, Felicia. A port for the IBM PC as a self-booting disk and the IBM PCjr were published in 1984 by IBM. These use four-color CGA graphics. Alley...
    7 KB (973 words) - 14:11, 20 September 2024
  • Thumbnail for BIOS
    BIOS (redirect from IBM PC BIOS)
    additional advantage of ROM on some early PC systems (notably including the IBM PCjr) was that ROM was faster than main system RAM. (On modern systems, the...
    89 KB (9,559 words) - 19:02, 5 May 2025
  • on the IBM PC as "atrocious" upon seeing the completed game running for the first time. Adventure in Serenia was a launch title for the IBM PCjr, announced...
    13 KB (1,541 words) - 02:23, 2 May 2025
  • game was ported to the Commodore 64, Atari 8-bit computers, MSX, IBM PC, and IBM PCjr. Juno First presents a set number of enemies per level, but they...
    4 KB (412 words) - 01:39, 29 March 2025
  • Thumbnail for Texas Instruments SN76489
    updated and widely adopted in systems like the BBC Micro, ColecoVision, IBM PCjr, Sega's Master System and Game Gear, and the Tandy 1000. Competing with...
    9 KB (1,099 words) - 01:03, 19 April 2025
  • (VIC-20, TI-99/4A, IBM PC) Super Storm (TI-99/4A) port of Slime Track & Field (IBM PC) Typo Attack (Apple II, C64, VIC-20, IBM PC, IBM PCjr) Vanguard (Apple...
    7 KB (777 words) - 06:07, 16 January 2025
  • Thumbnail for IBM PC compatible
    (April 1985). "Lotus 1-2-3 For IBM PCjr". Compute!. p. 63. Retrieved October 6, 2013. Caruso, Denise (February 27, 1984). "IBM wins disputes over PC copyrights"...
    73 KB (8,109 words) - 06:01, 12 May 2025
  • Thumbnail for IBM PS/2
    PS/2 is IBM's second generation of personal computers. Released in 1987, it officially replaced the IBM PC, XT, AT, and PC Convertible in IBM's lineup...
    39 KB (4,609 words) - 08:49, 12 March 2025
  • memory plugged into an ISA slot. The first IBM PC to use the SMA was the IBM PCjr, released in 1984. Video memory was shared with the first 128 KiB of RAM...
    4 KB (496 words) - 22:22, 5 February 2025
  • Thumbnail for Apple IIc
    Macintosh. The IIc was also seen as the company's response to the new IBM PCjr, and Apple hoped to sell 400,000 by the end of 1984. The company described...
    32 KB (4,068 words) - 13:58, 5 May 2025