"A Faster and Professional-Looking Atari STE"

Released in late 1991, the Atari MEGA STE is a multimedia-enhanced MEGA ST offering a 4,096-color palette, a Blitter, a faster CPU, PCM stereo sound, and a new TOS operating system. MEGA STE features speed-switching (8/16 MHZ) and VMEbus flexibility and acted as a link between the earlier STE models and the high-end TT and Falcon series.

  • Priced at $1,799 at launch (around $4,245 in 2025 money)
  • It’s estimated that 120,000 MEGA STE units were sold worldwide
  • Used the same case as the Atari TT and a compatible keyboard with the Mega ST and TT.

 

ATARI MEGA STE AT A GLANCE

The Mega STE blended the STE's affordability with TT-like expandability:

  • Compatible with STE and the older ST models
  • 68000 CPU @ 16 MHZ (8/16 MHZ software-switchable for compatibility)
  • 1/2 MB RAM, easily expandable to 4 MB via 4 x 30-pin SIMMs
  • 256 KB ROM
  • Built-in 3.5” double-sided floppy drive, 720 KB (early models) or 1.44 MB HD (later models)
  • TOS 2.05/2.06 (graphical OS)
  • 4,096-color palette
  • Blitter chip for fast graphics and hardware scrolling
  • 2-channel 8-bit PCM stereo sound (2x2 mono)
  • VMEbus slot supported add-ons like Ethernet cards
  • Genlock support
  • External Keyboard (compatible with Atari TT and Mega ST)

 

Colors & Graphic Modes

The Mega STE from collection..The STE/MEGA STE brought a major visual upgrade over earlier ST models. With hardware scrolling, a Blitter co-processor, and a deep color palette, it was designed with multimedia and games in mind.

  • Up to 16 on-screen colors from a 4096-color palette (vs. 512 on the ST)
  • Display modes:
    • 320×200
    • 640×200
    • 640×400
  • Blitter chip: Moves data at up to 4 MB/s
  • Hardware scrolling: Smooth horizontal & vertical panning
  • Capable of displaying more than 16 colors on-screen using software tricks
  • Genlock support for video overlay and production

 

Sound Capabilities

The MEGA STE featured PCM audio, delivering far superior sound to any earlier ST models.

  • 2-channel 8-bit stereo PCM audio
  • Plays samples at up to 50 kHz
  • Mixes with the 3-channel YM2149 FM synth from the original ST
  • Greatly improved audio for music and games

 

I/O Ports

Internally:

  • SCSI Port: Limited to 1 GB drives by default but could be modded for up to 2 TB support
  • VMEbus slot supported add-ons like Ethernet cards, graphics accelerators, or memory upgrades (up to 8 MB)

Externally:

  • 2 x DB25 RS-232c serial port (9-pin)
  • DB25 Centronics printer port
  • LocalTalk/RS-422 port
  • ACSI (similar to SCSI) port for external hard-disk
  • External Floppy Drive Port (14-pin DIN)
  • Monitor RGB port (13-pin DIN)
  • RF modulator
  • RCA stereo audio-out jacks
  • Cardridge
  • Midi (in, out)

 

Expansions & Upgrades

The very nice ACSI2STM external SD-based Hard Disk

The Mega STE STE offers a wide range of upgrade possibilities, especially for retro enthusiasts today.

  • RAM: Upgradable to 8 MB
  • Internal HD (standard in some models)
  • Other Storage:
    • SD-card-based hard drives (UltraSatan, ACSI2STM)
    • Internal/External Gotek floppy emulator
  • VMEbus slot supported add-ons like Ethernet cards, graphics accelerators, and memory upgrades
  • CPU Boosters
  • 1.44 MB floppy upgrade (requires a controller chip -standard in later MEGA STE models)
  • Dual TOS switchers
  • Optional Motorola 68881/68882 FPU (math coprocessor)
  • The Eiffel interface allows you to connect a standard PS/2 keyboard and mouse to Atari Mega STE

 

Monitors

Inside the Mega STE..The MEGA STE works with a wide variety of display types:

  • Atari RGB monitors (color and monochrome)
  • TVs via SCART (RGB to SCART cable)
  • 15 kHz VGA monitors (with adapter)
  • Modern HDMI/VGA monitors (via upscaler hardware)

 

MEGA STE Gaming Titles

While not heavily supported at launch, the STE series later gained a dedicated fanbase and enhanced versions of classic titles. These took full advantage of the DMA sound, Blitter, and hardware scrolling.

Notably STE enhanced or exclusive games:

  • Lotus Esprit Turbo Challenge STE (Blitter boosted)
  • R-Type Deluxe
  • Obsession (very good pinball)
  • Stardust
  • Whitewater Madness (Exclusive)
  • Xenon II (DMA streamed music)
  • Cannon Fodder (DMA streamed music)
  • Prince Of Persia (DMA music and sounds)
  • Dungeon Master (DMA streamed music)
  • Chaos Strikes Back (DMA streamed music)
  • Jinks (smoother STE scrolling)
  • Uridium (Blitter boosted and DMA streamed music)
  • Giana Sisters (optional DMA music)
  • Hard 'n' Heavy
  • Outrun (playable demo)
  • Metal Slug (playable demo)
  • Ghouls 'N Ghosts (playable demo)
  • Escape 2042
  • Alien Blast
  • Death Chase
  • Ultimate Arena
  • Pole Position
  • Top Banana
  • Roger
  • Jinks
  • Heartland 2000
  • Zero-5
  • PacMania STE


Here you can also find some nice enhanced games for the MEGA STE (16 MHZ): http://www.klapauzius.net/Old_Games.html

 

Atari MEGA STE

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Sources:

  • Wikipedia
  • Ataricrypt.blogspot.com

 

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