- Sun-2
families.
Sun-2 systems were supported in SunOS until version 4.0.3. Remarkably, support for Multibus Sun-2 systems was added to
NetBSD in 2002, with the release of NetBSD 1.6.Sun-2 models
Models are listed in approximately chronological order.
A desktop disk and tape sub-system was introduced for the Sun2/50 desktop workstation. It could hold a 5 1/4" disk drive and 5 1/4" tape drive. It used DB-50 connectors for its SCSI cables, a Sun specific design. It was often referred to as a "Sun Shoebox".
Sun-1 systems upgraded with Sun-2 Multibus CPU boards were sometimes referred to as the 2/100U (upgraded Sun-100) or 2/150U (upgraded Sun-150).
A typical configuration of a monchrome 2/120 with 4Mb of memory, 71 Mb SCSI disk and 20 Mb 1/4" SCSI tape cost $29,300 (1996 US price list [Sun U.S. Price List, End User and OEM Version, Effective March 25, 1986, Sun Microsystems] ).
A color 2/160 with 8Mb of memory, two 71 Mb SCSI disks and 60 Mb 1/4" SCSI tape cost $48,800 (1996 US price list).
A Sun 2/170 server with 4Mb of memory, no display, two Fujitu Eagle 380 Mb disk drive, one Xylogics 450 SMD disk controller, a 6250 bpi 1/2 inch tape drive and a 72" rack cost $79,500 (1996 US price list).
un-2 hardware
un 2 Multibus Systems
Sun 2/120 (9 slot deskside) and 2/170 (15 slot rackmount) systems were based on the
Multibus architecture. The CPU board was based on a 10MHz 68010 processor with a proprietary Sun Memory Management Unit (MMU) and could address 8MB of physical and 16MB of virtual memory. The top 1MB of physical memory address space was reserved for the monochrome frame buffer. The [Multibus] CPU board supported the Sun-1 parallel keyboard and mouse as well as two serial ports.
un 2 VME Bus Systems
The Sun 2/50 (2 slot desktop), Sun 2/130 (12 slot monochrom deskside) and Sun 2/160 (12 slot color deskside) used quad-depth, triple height Eurocard
VMEbus CPU boards. TheVMEbus CPU board was based on the same design as theMultibus CPU but also included 2Mb or 4Mb of memory, the Sun-2 monochrome frame buffer, and 10 Mb/s Thick Ethernet on board.Sun provided 1Mb
Multibus memory boards and 1MB and 4MBVMEbus memory boards but only supported configurations with a maximum of 4MB RAM. Companies like Helios Systems also made 4MB memory boards that would work in Sun systems.A common frame buffer was the Sun-2 Prime Monochrome Video. This board provided an 1152x900 monochrome display with TTL or ECL video signals, and keyboard and mouse ports. It normally occupied the top 1MB of physical memory address space. There was also a Sun-2 Color Video board available that provided an 1152x900 8-bit color display. This board occupied the top 4MB of address space.
42MB MFM disks were commonly used for storage. Two disks could be connected to an
Adaptec MFM/SCSI and then to a Sun-2 Multibus Serial/SCSI Host Adapter. The SCSI board provided two additional serial ports. For larger storage requirements, 65, 130, and 380 MB SMD disks were connected to aXylogics 450 SMD Controller. The SMD controller could support four disks even though Sun only supported two. A 20 MB QIC tape drive could be connected through an Archive QIC/SCSI converter. The system also supported 1/2" tape drives connected to a Computer Products Corporation TAPEMASTER or a Xylogics 472 board.An Ethernet connection was provided by a Sun board based on the Intel 82586 chip, or a
3Com 3c400 board. The server could support diskless Sun-2/50 clients through the Ethernet board.Other supported Multibus boards included the Sky Computer Floating Point Processor, Sun ALM (Asynchronous Line Multiplexer) with 8 serial ports, and Sun SunLink Communications Processor (SCP) for SNA and
X.25 connectivity.References
ee also
*
Sun-3
*Sun386i
*Sun-4
*SPARCstation External links
* [http://www.sun.com/ Sun Microsystems]
* [http://www.sunhelp.org/faq/sunref1.html The Sun Hardware Reference, Part 1]
*The Sun-2 Hardware Reference: [http://sunstuff.org/Sun-Hardware-Ref/s2hr/part1 Part 1] and [http://sunstuff.org/Sun-Hardware-Ref/s2hr/part2 Part 2]
* [http://www.sunshack.org/data/feh/1.5/wcd00094/wcd09466.htm Sun Field Engineer Handbook, 20th edition]
* [http://www.soupwizard.com/sun2/index.htm soupwizard.com Sun-2 Archive]
Wikimedia Foundation. 2010.
