Tim McGuinness, Ph.D. Business Process & Regulatory Compliance Specialist Technologist & Electronics Engineer Internet Publisher Published Author WebFossil web design Archaeology & Anthropology Technology Industry History - Online Museum
Atari Inc. Hardware / Software Design History Of
Tim McGuinness
1980-1981 Hardware Design Engineer, Personal Computer Division
1981-1982 Sr. Research Engineer / Asst. Director Corp. Research Engineering

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Atari Computer Peripherals

Atari 810 Floppy Drive

1980 - The Atari 810 Disk Drive was Atari's first disk drive for its line of Atari 400/800 computers.   Providing 92K (88K formatted) of storage per disk side (only one side was used), the 810 gave Atari computer users the ability to quickly store and retrieve documents and program files to and from the storage device.   Up to 4 Atari 810's could be daisy chained together via the Atari SIO bus for a total of almost 360K of on-line random access file storage and retrieval.   It used the Tandon and MPI base drives with an internal controller.

1981 - The Atari 815 was Atari, Inc's first and only true double density disk drives.   The 815 utilized both MPI and Tandon mechanisms and had both versions of the front plastic panels to support either drive.    The 815's are huge to say the least, almost as tall as 2 810's stack one atop another.    The 815's sold for $1,500.00  in very limited quantities.   Few catalogs ever displayed the Atari 815.   The 815 never made full production.

1980 - The Atari 820 printer provided Atari 400/800 users with a quick and simple printer.   No drivers or special interfaces were needed.   The Atari 820 printer plugged directly onto the Atari SIO bus and allowed users the ability to make 40 column printouts which were good for tracking finances, printing out program listings and other files. 
The Atari 822 thermal printer was a compact, and extremely quite printer which produced good quality 40 column thermal printouts.
Atari introduced with its Atari 400 and 800 series computers its first 80 Column printer.   The Atari 825 which actually a repackaged Centronics 737 printer.   Earlier models had limited capabilities, the later 825 models with the extended basic character set had the capability of producing the Atari ATASCII graphics character set.  The Atari 825 required the use of the Atari 850 interface module to allow it to communicate with the Atari 400 and 800 computer because it had a Centronics parallel interface on it instead of the Atari SIO interface which the Atari 820 and Atari 822 printers had built in.
The Atari 830 modem was sold seperately and also in the Telecommunicator Package that Atari sold.   The package included the 830 modem, modem cable, 850 interface module, owners manual, 850 technical manual and the Telelink I communications cartridge.    The kit also included signups to Compu$erve and The Source on-line networks.   The 830 was a re-label Hayes modem, with minimal modifications.
The Atari 850 interface was a very useful peripheral.    The Atari 850 gave the original Atari 400/800 and the XL systems their connection to the non-Atari world.    The Atari 850 interface provided 4 separate RS-232-C serials ports and a Centronics compatible printer port.

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The information presented is believed to be correct and accurate.  However, please let us know of any errors.  This is a scholarly work for non-profit educational purposes Some content used under "Fair Use" provision of section 107 U.S. Copyright Law
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