Concept
Sun-3
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 |
| Image:Sun3_4MbMemory_Sun3_Scsi.jpg |
| Image:Sun3_50CPUwHelios4Mb.jpg |
| 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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