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This is the recovered Machine Room from 2005. Please don't expect wonders. The look and feel of this site is nine years old, and so is its code. Some of the functionality has been recovered while the rest of the site is modernised and restructured. Watch this space!
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Atari400

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The Atari 400 was a very impressive machine for its time, with its strange sci-fi bulk and membrane keyboard. The big door is for inserting cartridges.
600x450 JPEG file (46.1 KiB). Contributed by alexios (more pictures like this). Rated 1.00 (4 votes).
Entry quality: 1 | Rate this entry: Rated 1.00 (1 vote). | 12481 hits | Admin: alexios
No known owners (I still own one | I used to own one). I have seen one.
Search Google or Ebay United States for Atari 400 (more links, auctions & searches)
Other series members
400, 800, 1200.
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Pricing 200.00 GBP (United Kingdom, 1982), 300.00 GBP (United Kingdom, 1979)
Emphasis Gaming, Home computing, Programming
Timeline Support dropped: 1 January 1992, Announced: November 1978, Production halted: 1983, Released: 1979
CPU type 6502A
CPU word length 8 bits
CPU clock rate 1.773 MHz, 1.79 MHz
ROM Size 10 KiB
RAM Size 8 KiB, 16 KiB
Maximum RAM Size 48 KiB
Keyboard Membrane keyboard
Number of keys 61
Graphics chip ANTIC, CTIA, GTIA
Graphics modes 160x192x2, 160x192x4, 160x96x2, 160x96x4, 320x192x2, 40x24x4, 80x192x16, 80x192x9, 80x48x2, 80x48x4
Text modes 20x12x5, 20x24x5, 40x12x5, 40x19x2, 40x24x2, 40x24x5
Total number of colours 16, 128, 256
Sound chip POKEY
Sound channels 2, 3, 4, 5
Octave range 4
Volume/DAC resolution 16
Sound output Mono
Cassette tape speed 300 bps, 1,400 bps, 4,800 bps
I/O Ports 4x Joystick, Cartridge, Expansion, SIO, TV output

More technical info...

Acknowledgements

Thanks go to the following people for contributing information to this entry.

References
Atari 8-bit Frequently Asked Questions
Planet Irata
Atari Historical Society