Acorn Atom Disc Pack Manual
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The ATOM Disc Pack is a free-standing unit providing upto 92K bytes of storage on standard 5.25 inch mini floppy discs in 40-track single-sided format.
It contains the following; An Olivetti OPE FD 501 disc drive unit, The Disc Operating System (DOS) in ROM An Acorn floppy disc controller card 3K bytes of RAM 5V and 12V regulated power supplies.
The unit plugs directly into the mains supply and is connected to the ATOM via a 64-way socket and an attached lead with plug. The socket accepts a ribbon cable which plugs into the bus extension socket on the ATOM, giving access to the extra memory inside the Disc Pack, and and allowing communication with the controller card for transfer of programs and data to and from the disc.
The plug on the attached lead connects to the DC IN socket on the ATOM, providing 5V regulated power at up to 3A, and replacing the normal ATOM mains power supply.
This exhibit has a reference ID of CH55197. Please quote this reference ID in any communication with the Centre for Computing History.