HEWLETT-PACKARD HP 9880 MASS MEMORY SUBSYSTEM
The HP 9880 was introduced in 1974 and provided mass storage for the 9830 computer/calculator. It contained a fixed disc platter and supported a removable disc platter, each with 2.4 megabytes of data storage.

It was composed of

  • HP 9867B Dual Platter Mass Memory Drive
  • HP 13215A Power Supply
  • HP 11305A Controller
  • HP 11273B ROM and Cassette
  • HP 12869A Memory Cartridge
An HP 11304A Cart was optional.

I'm interested in locating and acquiring these devices. If you have this equipment, or might know someone who does, please send me an e-mail!

SPECIFICATIONS
DATA CAPACITY AVAILABLE TO USER:
    9880A   9880B
Bytes   2,433,024   4,866,048
Bytes per Word   2   2
Words per Record   256   256
Number of Records   4,752   9,504 (4752/platter)
Maximum Number of Files   768   1,536 (768/platter)

SPEED:
  9880A9880B
Average Access Time 47.5 ms 42.5 ms
Data Transfer Time 5.7 ms per 512 bytes 5.7 ms per 512 bytes

Data taken from the April 1974 issue of the Hewlett-Packard Journal.

TECHNICAL SALES BROCHURE
The following four pages are scans of a technical data sales brochure from December of 1973.


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Updated February 18, 2006