VAXstation

The VAXstation was a family of workstation computers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA). VAX stood for Virtual Address EXtension.

Introduced in October 1984, it was code named "Seahorse", and used the KD32 CPU module containing a 4 MHz (250 ns) MicroVAX I processor.

Code named "Mayflower", it used the KA630 CPU module containing a 5 MHz (200 ns) MicroVAX 78032 microprocessor. It was essentially a MicroVAX II in a workstation configuration.

Introduced in December 1985, it was code named "Caylith", and was a variant of the VAXstation II with hardware-enhanced, high-performance color graphics.

Introduced in February 1987, it was code named "VAXstar" or "Kapri", and used the KA410 CPU module containing a 5 MHz MicroVAX II processor with no cache. It was essentially a MicroVAX 2000 in a workstation configuration.

Code named "PVAX", it used the KA42-A CPU module containing an 11.12 MHz (90 ns) CVAX microprocessor with a 64 KB external cache.

The VT1300 X terminal was essentially a diskless VAXstation 3100 Model 30, running the VAXELN operating system.

Code named "PVAX rev#7", it used the KA42-B CPU module containing a 16.67 MHz (60 ns) CVAX+ microprocessor with a 64KB external cache.

Code named "PVAX", it used the KA42-A CPU module containing an 11.12 MHz (90 ns) CVAX+ microprocessor with a 64KB external cache.

Code named "PVAX rev#7", it used the KA42-B CPU module containing a 16.67 MHz (60 ns) CVAX+ microprocessor with a 64KB external cache.

Code named "RigelMAX", it used the KA43-A CPU module containing a 35.71 MHz (28 ns) Rigel microprocessor with a 128 KB external cache. It provided two separate SCSI buses, one for internal devices and one for external.

Code named "Mayfair/GPX", it used the KA650 CPU module containing a CVAX chip set operating at 11.12 MHz (90 ns cycle time) with 64 KB of external secondary cache.

The VAXstation 3520 and VAXstation 3540, code named "Firefox", were multiprocessor computers with two or four CVAX chip sets respectively, contained on KA60 CPU modules running at 12.5 MHz (80 ns cycle time). They were positioned as mid-range workstations. The first official announcement from Digital regarding these workstations was on 10 January 1989, although it was a "programme announcement" with no dates or prices provided.

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