Magnolia MicroSystems (MMS)

Location: Seattle, WA

Hardware Products

  • 77311 - 16k RAM board $125
  • 77312 - ORG-0 CP/M Modifications
  • 77314 - CORVUS/Z47/Remex Interface Board
  • 77315 - CAMEO I/O
  • 77316 - Double Density Disk Controller $495 (originally $595)
    • supports 4 - 8" Drives
    • supports 4 - 5.25" Drives
  • 77317 - ACT/XCOMP I/O
  • 77318 - 128k RAM board $495
  • 77319 - Video Output $79
  • 77320 - SASI-bus Winchester Interface (plus 3 serial ports) $350
  • 77422 - Network Controller $695 - 64k, $1295 256k
    • 4Mhz Z80
    • 64k RAM, optional 256k bank-selectable
    • 8k EPROM
    • 4 Channel DMA controller
    • 2 Serial Ports (1 - RS422 at 500K baud, 1 RS232 at up to 19.2K)
    • supports CP/NET ($450), MP/M II ($595)

Software Products

  • CP/M 1.4
  • CP/M 2.2 (2.23, 2.24) $100
  • CP/M Plus (3.0) (free with 77318 128k RAM board)
  • MP/M II ($595, requires 77422)
  • CP/NET ($450, requires 2 or more 77422 boards one with MP/M)

Some images of these software titles are available on in the library.

Documentation

Schematics

Here are the schematics for many of their hardware products: mms_schematics.pdf

Personnel

  • Owner/CEO: Brad Gjerding
  • Dates: 1980s - ?
  • Current Status: Unknown, assumed dissolved.

Permission

I received the following from Brad Gjerding on 2/12/2013:

You have my permission to allow duplication of any Magnolia Microsystems © software and/or documentation for non-commercial use.

Last Modified: Saturday, 24-Sep-2016 19:37:47 PDT

Contact Details

Mark Garlanger

Email: mark [at] garlanger [dot] com
Website: www.garlanger.com

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About

This site is dedicated to preserving the history of the original Heathkit computers. They were initially release in 1977 and included the 8-bit H-8 and 16-bit H-11 systems. The H89 was released in 1979.