RasterCore

Atari ST

LAUNCH_YEAR: 1985

The "Jackintosh". Amiga's arch-rival and the king of MIDI production.

Historical_Context

When Jack Tramiel was ousted from Commodore, he bought Atari and declared war. The result was the ST (Sixteen/Thirty-two). It beat the Amiga to market by a few months and offered a high-resolution monochrome monitor that was perfect for publishing and coding.

The ST was simpler than the Amiga. It used a "framebuffer" approach without fancy coprocessors (until the STE added a Blitter). This made it faster for raw 3D polygon calculations but slower for 2D sprites.

Its secret weapon was built-in MIDI ports. This made it the standard for music studios for a decade. Artists from Fatboy Slim to 808 State ran their studios on Atari STs.

Notable_Models

Tech_Specs

  • CPU Motorola 68000 @ 8 MHz
  • RAM 512 KB (520ST) to 4 MB (Mega)
  • Graphics 320x200 (16c), 640x400 (Mono)
  • Audio Yamaha YM2149 (PSG)

Key_Silicon

Shifter Video

Shifted memory data to video output. No hardware sprites.

YM2149 Sound

A licensed version of the General Instruments AY-3-8910.

Motorola 68901 MFP

Multi-Function Peripheral. Interrupts and Timers.

Blitter Graphics DMA

Added in STE/Mega STE models for fast memory moves.