Atari MEGA STE
Encyclopedia
The Atari Mega STE was Atari Corporation
Atari Corporation
Atari Corporation was a manufacturer of computers and video game consoles from 1984 to 1996. Atari Corp. was founded in July of 1984 when Warner Communications sold the home computing and game console divisions of Atari to Jack Tramiel. Its chief products were the Atari ST, Atari XE, Atari 7800,...

's last ST
Atari ST
The Atari ST is a home/personal computer that was released by Atari Corporation in 1985 and commercially available from that summer into the early 1990s. The "ST" officially stands for "Sixteen/Thirty-two", which referred to the Motorola 68000's 16-bit external bus and 32-bit internals...

 series personal computer
Personal computer
A personal computer is any general-purpose computer whose size, capabilities, and original sales price make it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator...

, released in 1991. The MEGA STE was essentially a late-model 680x0
Motorola 68000
The Motorola 68000 is a 16/32-bit CISC microprocessor core designed and marketed by Freescale Semiconductor...

-based STE mounted in the case of the otherwise unrelated Atari TT computer, although a number of TT features were also blended in. The resulting machine was a more business-like version of the ST line.

Description

The MEGA STE is based on STE hardware. Physically, the 2 MB and 4 MB models shipped with a high resolution mono monitor, and an internal ACSI
ACSI
ACSI may also refer to:* Acta Chimica Slovenica, a peer-reviewed chemical journal published by the Slovenian Chemical Society* American Customer Satisfaction Index, an economic indicator that measures the satisfaction of consumers across the U.S...

 hard disk (the 1 MB model included neither a monitor, hard disk, nor hard disk controller). Despite offering better ST compatibility than the TT, it also included a number of TT features, from the ST-grey version of the TT case with separate keyboard and system unit, optional FPU
Floating point unit
A floating-point unit is a part of a computer system specially designed to carry out operations on floating point numbers. Typical operations are addition, subtraction, multiplication, division, and square root...

, a VMEbus
VMEbus
VMEbus is a computer bus standard, originally developed for the Motorola 68000 line of CPUs, but later widely used for many applications and standardized by the IEC as ANSI/IEEE 1014-1987. It is physically based on Eurocard sizes, mechanicals and connectors , but uses its own signalling system,...

 slot, two extra RS232 ports (all 9-pin rather than 25-pin as previous models had), a LocalTalk
LocalTalk
LocalTalk is a particular implementation of the physical layer of the AppleTalk networking system from Apple Computer. LocalTalk specifies a system of shielded twisted pair cabling, plugged into self-terminating transceivers, running at a rate of 230.4 kbit/s...

/RS-422 port (no AppleTalk
AppleTalk
AppleTalk is a proprietary suite of protocols developed by Apple Inc. for networking computers. It was included in the original Macintosh released in 1984, but is now unsupported as of the release of Mac OS X v10.6 in 2009 in favor of TCP/IP networking...

 software was ever produced) and a 1.44 MB HD floppy support. Support for a third/middle mouse button was included, too.

A unique feature of the MEGA STE in relation to previous Atari systems is the software-switchable CPU speed, which allows the CPU to operate at 16 MHz for faster processing or 8 MHz for better compatibility with old software. An upgrade to the operating system was also produced after the first units were shipped that upgraded the onboard ROMs to TOS
Atari TOS
TOS is the operating system of the Atari ST range of computers. This range includes the 520 and 1040ST, their STF/M/FM and STE variants and the Mega ST/STE. Later, 32-bit machines were developed using a new version of TOS, called MultiTOS, which allowed multitasking...

 2.0 and later to 2.6/2.06.

The VME bus provided expansion capability using cards that enhanced the computer's capabilities such as enhanced graphics processing capability and Ethernet network connectivity.

Technical specifications

  • CPU: Motorola 68000
    Motorola 68000
    The Motorola 68000 is a 16/32-bit CISC microprocessor core designed and marketed by Freescale Semiconductor...

     @ 8 or 16 MHz
  • FPU: Motorola 68881
    Motorola 68881
    The Motorola 68881 and Motorola 68882 were floating-point coprocessor chips that were used in some computer systems in conjunction with the 68020 or 68030 CPUs. The addition of one of these chips added substantial cost to the computer, but added a floating point unit that could rapidly perform...

     or Motorola 68882
  • RAM: 1, 2 or 4 MB
    Megabyte
    The megabyte is a multiple of the unit byte for digital information storage or transmission with two different values depending on context: bytes generally for computer memory; and one million bytes generally for computer storage. The IEEE Standards Board has decided that "Mega will mean 1 000...

     ST RAM expandable to 4 MB using 30-pin SIMM
    SIMM
    A SIMM, or single in-line memory module, is a type of memory module containing random access memory used in computers from the early 1980s to the late 1990s. It differs from a dual in-line memory module , the most predominant form of memory module today, in that the contacts on a SIMM are redundant...

    s
  • Sound: Yamaha YM2149 + enhanced sound chip same as in Atari STe
  • Drive: 720 KB (first MEGA STE version) or 1.44 MB (later version) 3½" floppy disk
    Floppy disk
    A floppy disk is a disk storage medium composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic carrier lined with fabric that removes dust particles...

     drive
  • Ports: MIDI In/Out, 3 x RS-232
    RS-232
    In telecommunications, RS-232 is the traditional name for a series of standards for serial binary single-ended data and control signals connecting between a DTE and a DCE . It is commonly used in computer serial ports...

    , "Serial LAN" LocalTalk
    LocalTalk
    LocalTalk is a particular implementation of the physical layer of the AppleTalk networking system from Apple Computer. LocalTalk specifies a system of shielded twisted pair cabling, plugged into self-terminating transceivers, running at a rate of 230.4 kbit/s...

    /RS-422, printer, monitor (RGB and Mono
    Monochrome
    Monochrome describes paintings, drawings, design, or photographs in one color or shades of one color. A monochromatic object or image has colors in shades of limited colors or hues. Images using only shades of grey are called grayscale or black-and-white...

    ), RF modulator, extra disk drive port, ACSI
    ACSI
    ACSI may also refer to:* Acta Chimica Slovenica, a peer-reviewed chemical journal published by the Slovenian Chemical Society* American Customer Satisfaction Index, an economic indicator that measures the satisfaction of consumers across the U.S...

     port, VMEbus
    VMEbus
    VMEbus is a computer bus standard, originally developed for the Motorola 68000 line of CPUs, but later widely used for many applications and standardized by the IEC as ANSI/IEEE 1014-1987. It is physically based on Eurocard sizes, mechanicals and connectors , but uses its own signalling system,...

     inside case, detachable keyboard, joystick and mouse ports on keyboard
  • Operating System
    Operating system
    An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...

    : TOS
    Atari TOS
    TOS is the operating system of the Atari ST range of computers. This range includes the 520 and 1040ST, their STF/M/FM and STE variants and the Mega ST/STE. Later, 32-bit machines were developed using a new version of TOS, called MultiTOS, which allowed multitasking...

     (The Operating System) with the Graphical Environment Manager
    Graphical Environment Manager
    GEM was a windowing system created by Digital Research, Inc. for use with the CP/M operating system on the Intel 8088 and Motorola 68000 microprocessors...

     (GEM) graphical user interface
    Graphical user interface
    In computing, a graphical user interface is a type of user interface that allows users to interact with electronic devices with images rather than text commands. GUIs can be used in computers, hand-held devices such as MP3 players, portable media players or gaming devices, household appliances and...

    (GUI) TOS versions: 2.05 in ROM or 2.06 in ROM
  • Display modes: 320×200 (16 color), 640×200 (4 colours), 640×400 (mono)
  • Case: Two-piece slimdesktop-style.
  • Release date: 1991

Links

Web page of Guillaume Tello What to do with a Mega STE? & Programs for the ST/TT family and technical articles (in french)
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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