DECsystem

DECsystem was a line of server computers from Digital Equipment Corporation. They were based on MIPS architecture processors and ran DEC's version of the UNIX operating system, called Ultrix. They ranged in size from workstation-style desktop enclosures to large pedestal cabinets.

The DECSYSTEM name was also used for later models of the PDP-10, namely the DECSYSTEM-10 and DECSYSTEM-20 series.

Identical to the DECstation 3100, but was intended to be used as a multiuser system. It was announced in early May 1989 at the UniForum exhibition in San Francisco. It was shipped in June 1989. Code name PMAX.

Rebranded Personal DECstation 5000 Series without any graphics. Code name MAXINE.

Rebranded DECstation 5000 Model 100 Series without any graphics. Codename 3MIN.

Rebranded DECstation 5000 Model 200 Series without any graphics. Code name 3MAX. (5000/260 3MAX+)

A desktop uniprocessor entry-level server. It replaced the DECsystem 3100. Code name MIPSMATE.

A pedestal uniprocessor system based on the Q-Bus. It shared many hardware options with the 3x00-series MAYFAIR VAXes, including TK70 tape drive, MS650-BA memory and DSSI disk drives. SCSI was not available except with third party add in hardware. The unit shipped with a MicroVAX diagnostic processor, which would run similar ROM diagnostics to the MicroVAX series, as well as boot the tape based MicroVAX Diagnostic TK70 tape. Once the console transferred control of the computer to the MIPS processor the MicroVAX sat essentially unused until the next boot. Code name MIPSFAIR.

A pedestal uniprocessor system based on the Q-Bus. It replaced the DECsystem 5400. The 5500 came with native SCSI support, as well as support for DSSI disk drives. Code name MIPSFAIR-2.

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