Atari STFM

The Atari STFM was the most popular of Atari's 16-bit micros, available as either the 520STFM with 512KB RAM or the 1040STFM with 1MB. Unlike its predecesors, the STFM contained a built in TV modulator, a 3½" disc drive (initially with a 360k capacity, but increased to 720k on later models) and had both the operating system (TOS) and the graphical user interface (GEM) stored in ROM.

Title image
Manufacturer Atari
Processor 68000
Speed (MHz) 8
RAM (KB) 512, 1024
RAM expandable to (KB) 1024
ROM (KB) 192
Sound 3 channels with noise
Keyboard type Typewriter-style
Number of keys 95
Dimensions (mm) (unknown)x(unknown)x(unknown)
Weight (g) (unknown)
  • Cartridge port (40 way edge connector)
  • MIDI-in port (5 pin DIN)
  • MIDI-out port (5 pin DIN)
  • RGB/mono/composite monitor output (13 pin DIN)
  • RF interface
  • external floppy connector (14 pin DIN)
  • DMA port / hard disc interface (19 pin D-type)
  • Centronics printer port (25 pin D-type)
  • RS232 interface (25 pin D-type)
  • mouse / joystick port (9 pin D-type)
  • joystick port (9 pin D-type)


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