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Concept
Sun-3
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.
Official source
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