Online Sun Information ArcHive

• Specifications

4/50 (SPARCstation IPX) motherboard 16M

 40MHz Fujitsu MB86903 or Weitek W8701, Sun-4c MMU with 8 hardware contexts.
  20MHz SBus.

 From left to right, the rear edge of the board has: a 50-pin SCSI-2 connector;
  an Ethernet connector; two serial port connectors (ports B and A from left to
  right, apparently DB9); a 13W3 video connector; an 8-pin-DIN keyboard/mouse
  connector; and an audio connector.

 Connector pinouts and form factors are not known.

 Video output is analog 8-bit color with the following resolutions and sync
  frequencies: 1152 x 900 @ 61.8KHz horizontal, 66Hz vertical; 1152 x 900 @
  71.7HKz horizontal, 76Hz vertical; 1024 x 800 @ 71.7KHz horizontal, 85Hz
  vertical; and 1022 x 1000 @ 81.8KHz horizontal, 76Hz vertical.

 Memory consists of up to four 4M or 16M x 33 72-pin SIMMs (501-1812 (4M), and
  501-1822 or 501-1915 (16M)). SIMM types may be mixed, and should be installed
  according to this table:

  total RAM         U0310   U0309   U0308   U0307
  ---------         -----   -----   -----   -----
     8M              4M              4M
     12M             4M      4M      4M
     16M             4M      4M      4M      4M
      or             16M
     20M             16M             4M
     24M             16M     4M              4M
     28M             16M     4M      4M      4M
     32M             16M             16M
     36M             16M     16M     4M
     40M             16M     16M     4M      4M
     48M             16M     16M     16M
     52M             16M     16M     16M     4M
     64M             16M     16M     16M     16M

 There are a variety of jumpers. All locations are given with component side up
  and connector side toward you.

  J0502 (3-pin jumper in near left, pin 1 farthest)
   1-2    Jump for RS423 serial ports
   2-3    Jump for RS232 serial ports

  J0503 (3-pin jumper in near left, pin 1 farthest)
   1-2    Jump for RS423 serial ports
   2-3    Jump for RS232 serial ports

  J0705 (block in near left)
   Described only as "SAX". Apparently all pins jumped by default.

 Additional features of interest: the boot PROM is along the middle left edge
  at location U0501.  The NVRAM/TOD/ID chip is beyond the boot PROM at location
  U0512.  At the far edge, from left to right, are the power, floppy, speaker,
  and internal SCSI connectors.  In the far left corner are the keyboard
  (F0602) and Ethernet (F0404) fuses, and the SCSI fuse (F0403) is in the
  middle far edge.  The fuses are not field-replaceable.

 Note that the IPX was first supported in SunOS 4.1.1.  Additionally, CPU
  boards with the 100-2770-02 LSC L1A6341 ASIC are subject to bugs 1055265,
  1057110, and 1057243 under SunOS 4.1.1 and 4.1.1 Rev B.  The IPX supplement
  fixes these bugs, and was rolled into SunOS 4.1.2.

 Note that bug 1047696 in the installation of SunOS 4.1.1 and 4.1.1 Rev B
  causes trouble when mixing 4M and 16M SIMMs.  "Install the 16MB SIMM in U0310
  when installing miniunix."

 Power requirements are +5V @ 4.4A with 64M, and +5V @ 3.8A with 16M (of 4M
  SIMMs); and +12V @ 0.4A.

  

   Last modified: 2000.12.07.22.11.45 CST
     Server time: 2008.12.06.05.29.41 GMT