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• Specifications

4/30 (SPARCstation LX/ZX) motherboard 32M

 50 MHz microSPARC.  20MHz SBus.

 This board is an unusual shape. On one edge are edge connectors.  All
  directions below are given assuming the component side up and the edge
  connectors toward you.

 There are two jumpers.

  J1801 (3-pin jumper in near right corner)
   1-2    100-ohm ISDN TE termination enabled                     JUMPED
   2-3    disabled

  J1802 (3-pin jumper in near right corner)
   1-2    100-ohm ISDN TE termination enabled                     JUMPED
   2-3    disabled

 The onboard video produces analog color output at the following resolution and
  sync frequencies: 1152 x 900 @ 61.8KHz horizontal, 66Hz vertical; 1152 x 900
  @ 71.7KHz horizontal, 76Hz vertical; 1024 x 768 @ 61.8KHz horizontal, 77Hz
  vertical; and 1600 x 1280 @ 71.7KHz horizontal, 76Hz vertical. Onboard VRAM
  is 1M; a 501-2061 1M VSIMM may be installed in U1301 (on right) to achieve 2M
  VRAM.

 Memory consists of up to six SIMMs, in three pairs of 4M (501-1991) or 16M
  (501-2059) SIMMs. SIMM types may be mixed, and should be installed according
  to this table:

               bank1   bank2   bank3   bank1   bank2   bank3
  total RAM    U0304   U0301   U0402   U0303   U0302   U0401
  ---------    -----   -----   -----   -----   -----   -----
     16M        4M      4M              4M      4M
     24M        4M      4M      4M      4M      4M      4M
     32M        16M                     16M
     40M     *  4M      16M             4M      16M
     48M     *  4M      4M      16M     4M      4M      16M
      or        16M     4M      4M      16M     4M      4M
     64M        16M     16M             16M     16M
     72M     *  4M      16M     16M     4M      16M     16M
     96M        16M     16M     16M     16M     16M     16M

  Rows marked with '*' do not work under SunOS 4.1.3c. "Put 16MB SIMMs in Bank
   1."

 Additional features of interest: the boot PROM is a PLCC in the near left
  corner, at location U0701. The NVRAM is beyond the boot PROM at location
  U0707.  Ethernet fuse F2001 and SCSI TERMPWR fuse F0601 are in the near left
  corner.  Keyboard fuse F2001 and audio fuse F2003 are in the middle near
  edge.  Along the far edge, more or less from left to right, are the
  speaker/LED, power, floppy, and internal SCSI connectors.

 Note that the SPARCstation LX/ZX was first supported in SunOS 4.1.3c.

 Note that when the 501-2061 VSIMM is installed, (one of?) the following
  commands should be issued at the ROM monitor prompt:

  setenv output-device screen:r1280x1024x67
  setenv output-device screen:r1280x1024x76
  setenv output-device screen:r1600x1280x76

 Note that when the '16" Mid-Range Color Monitor' is installed, (one of?) the
  following commands should be issued at the ROM monitor prompt:

  setenv output-device screen:r1152x900x66
  setenv output-device screen:r1024x768x77

  

   Last modified: 2000.12.07.22.26.13 CST
     Server time: 2008.12.06.05.31.12 GMT