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The hardware is based on the design of the Sun SPARCstation series, a very successful line of UNIX workstations. The JavaStation, as an NC, lacks a hard drive, floppy or CD-ROM drive. It also differs from other Sun systems in having PS/2 keyboard and mouse interfaces and a VGA monitor connector.
There were several models of the JavaStation produced, some being pre-production variants produced in very small numbers.
Production models comprised:
- JavaStation-1 (part number JJ-xx), codenamed Mr. Coffee: based on a 110 MHz MicroSPARC IIe CPU, this was housed in a cuboidal Sun "unidisk" enclosure.
- JavaStation-NC or JavaStation-10 (part number JK-xx) codenamed Krups: a redesigned Mr. Coffee with a 100 MHz MicroSPARC IIep CPU and enhanced video resolution and color capabilities. Krups was housed in a striking curved vertically oriented enclosure.
Models produced only as prototypes or in limited numbers included:
- JavaStation/Fox: a prototype of the Mr Coffee: essentially a repackaged SPARCstation 4 Model 110.
- JavaStation-E (part number JE-xx) codenamed Espresso: a Krups with PCI slots and a non-functional ATA interface in a restyled enclosure.
- Dover: a JavaStation based on PC compatible hardware, with a Cyrix MediaGXm CPU.
- JavaEngine-1: an ATX form-factor version of Krups for embedded systems.
- A 68030-based system designed by Diba, Inc. (later acquired by Sun) circa 1996, which could be considered a very early JavaStation-like system.
In addition, Sun envisioned a third-generation "Super JavaStation" after Krups, with a JavaChip co-processor for native Java bytecode execution. This doesn't appear to have been produced.