Sun-3
Sun-3 was the name given to a series of UNIX computer workstations and servers produced by Sun Microsystems, launched in 1985. The Sun-3 series were VMEbus-based systems similar to some of the earlier Sun-2 series, but using the Motorola 68020 microprocessor, in combination with the Motorola 68881 floating-point co-processor (optional on the Sun 3/50) and a proprietary Sun MMU. Sun-3 systems were supported in SunOS versions 3.0 to 4.1.1_U1 and also have current support in NetBSD.
Contents
Sun-3 models
Models are listed in approximately chronological order.
| Model | Codename | CPU board | CPU MHz | Max. RAM | Chassis |
|---|---|---|---|---|---|
| 3/75 | Carrera | Sun 3004 | 16.67 MHz | 8 MB | 2-slot VME (desktop) |
| 3/140 | Carrera | Sun 3004 | 16.67 MHz | 16 MB | 3-slot VME (desktop/side) |
| 3/160 | Carrera | Sun 3004 | 16.67 MHz | 16 MB | 12-slot VME (deskside) |
| 3/180 | Carrera | Sun 3004 | 16.67 MHz | 16 MB | 12-slot VME (rackmount) |
| 3/150 | Carrera | Sun 3004 | 16.67 MHz | 16 MB | 6-slot VME (deskside) |
| 3/50 | Model 25 | - | 15.7 MHz | 4 MB | "wide Pizza-box" desktop |
| 3/110 | Prism | - | 16.67 MHz | 12 MB | 3-slot VME (desktop/side) |
| 3/260 | Sirius | Sun 3200 | 25 MHz (CPU), 20 MHz (FPU) | 32 MB | 12-slot VME (deskside) |
| 3/280 | Sirius | Sun 3200 | 25 MHz (CPU), 20 MHz (FPU) | 32 MB | 12-slot VME (rackmount) |
| 3/60 | Ferrari | - | 20 MHz | 24 MB | "wide Pizza-box" desktop |
| 3/E | Polaris | Sun 3/E | 20 MHz | 16 MB | none (6U VME board) |
(Max. RAM sizes may be greater when third-party memory board were used).
Sun-3x
In 1989, coincident with the launch of the SPARCstation 1, Sun launched three new Sun-3 models, the 3/80, 3/470 and 3/480. Unlike previous Sun-3s, these used a Motorola 68030 processor, 68882 floating-point unit, and the 68030's integral MMU. This 68030-based architecture was called Sun-3x.
| Model | Codename | CPU board | CPU MHz | Max. RAM | Chassis |
|---|---|---|---|---|---|
| 3/80 | Hydra | - | 20 MHz | 16 or 40 MB | "Pizza-box" desktop |
| 3/470 | Pegasus | Sun 3400 | 33 MHz | 128 MB | 12-slot VME (deskside) |
| 3/480 | Pegasus | Sun 3400 | 33 MHz | 128 MB | 12-slot VME (rackmount) |
Sun 3/260s upgraded with Sun 3400 CPU boards were known as Sun 3/460s.
