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Table of Contents

Atari ST Computers

Operating System

  • TOS - The Operating System
  • GEM - Graphical Environment Manager
  • boot disk
    • to make an autoboot disk put the program in a folder named “AUTO”, when the floppy boots it will skip the GEM environment and go straight from TOS to the executable, this is the default for most games and demos

Hardware

ModelRelease YearDetails
Atari 520ST1985 The original ST model. Features 512 KB of RAM; uses an external power supply and requires an external floppy drive
Atari 520STM1985Same as the above but with a built-in RF modulator for connection to any TV set
Atari 520STFM1986Built-in floppy drive, RF modulator and power supply
Atari 520ST+1986An upgraded original 520ST but with 1 MB of RAM
Atari 1040STF1986 A 520ST with a built-in double-sided, double density disk drive and 1 MB of RAM. The 1040STF only has a monitor output with no RF out.
Atari 1040STFM1986 Same as above, but with a built-in RF modulator.
Mega ST1988

520STE and 1040STE (1989) - Same as 520STFM/1040STFM, but includes the BLiTTER graphics chip and enhanced sound. The sound chip has two extra channels which can be used for digitized audio. The color palette is extended to 4096 colors. These expanded features were rarely utilized.|

Mega STE 991Same hardware as the 1040STE, but with a 16 MHz CPU and using the same case as the Atari TT desktop computer.

520 ST

Hardware

  • the best models to get
    1. 520 STE - includes BLiTTER chip, the FDD, RF modulator, and internal power supply
    2. 520 STFM - includes the FDD, RF modulator and internal power supply
  • 68000 based CPU, 512 MB, 8Mhz
  • to make your life easier, look for the 'newer' models that have the power supply built into the chassis
  • 520 Power supply

1040 ST

Hardware

  • the best models to get
    1. 1040 STE - includes BLiTTER chip, the FDD, and RF modulator
    2. 1040 STFM - includes the FDD and RF modulator and internal power supply
  • 68000 based CPU, 1024 MB,

Hack

  • ACSI2STM
    • a project to add an external SD card via the HDD port
    • uses a STM32F103C8T6 board
    • faster and cheaper than a Satan /UltraSatan
    • it appears to need a high level of TOS, like v1.04 or better (?)
    • you may need a tool like this - 5v CH340G Serial Converter USB 2.0 To TTL 6PIN Module for PRO mini K9
Last modified: le 2021/08/11 16:39

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