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Atari 2600

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Atari 2600

🔒 Securing session…

Editor's Notes

Reflections on 2600 legacy

The Atari 2600's development under codename Stella marked a shift from dedicated Pong consoles to programmable systems, leveraging the MOS 6507's affordability to make home arcade experiences viable, influencing all future consoles.

Space Invaders' 1980 port exemplified killer apps, transforming modest sales into market dominance and proving licensed arcade conversions could drive hardware adoption in living rooms worldwide.

"MOS 6507 enabled affordable programmability."

Strengths

  • Pioneered swappable cartridges
  • Affordable microprocessor design
  • Massive 30 million sales
  • Long 15-year lifespan

Considerations

  • Only 128 bytes RAM
  • No framebuffer limits
  • RF-only TV output
  • Pac-Man port flaws

Key Terms

Bank switching
Technique to expand cartridge ROM beyond 4 KB by swapping memory banks into the 2600's limited address space, first implemented in Asteroids.
Television Interface Adaptor
Custom TIA chip handling graphics, audio, and RF output for Atari 2600, supporting sprites, background, and real-time scanline rendering without framebuffer.
Racing the beam
Programming method syncing code to CRT electron gun scanlines, allowing game logic during vertical blanking for dynamic graphics on visible lines.
MOS Technology 6507
Cost-reduced 6502 CPU with 13 address pins for Atari 2600, clocked at 1.19 MHz, addressing up to 8 KB but limited to 4 KB by cartridge port.