Summary
Sun-3 is a series of UNIX computer workstations and servers produced by Sun Microsystems, launched on September 9, 1985. The Sun-3 series are 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 and Linux. Models are listed in approximately chronological order. {| class="wikitable" !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 boards are used.) Image:Sun3_CPU.jpg|Original Sun-3 CPU board Image:Sun3_4MbMemory_Sun3_Scsi.jpg|Original Sun-3 4 MB memory board with Sun-3 [[SCSI]] daughter board Image:Sun3_50CPUwHelios4Mb.jpg|Sun 3/50 CPU board with Helios 4 MB memory expansion The Sun Type 3 keyboard is split into three blocks: special keys main block numeric pad It shipped with Sun-3 systems. 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.
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