Comments and Suggestions
   
Last updated: April 16, 1997


Board Installation Notes

Backplane Slot Assignment Charts

Each system chart lists the PCB slot assignments in order of descending priority. In the charts A,B,C... indicates the preferred location for a specific board. An A is the most preferred location. An a indicates that a board requires more than one slot if Memory, Frame Buffer, or other options are installed. Multiple capital letters (AA, BBB...) indicate a board requires more than one slot. Boards with multiple part numbers are shown with a footnote (SS600 CPU 1) and are listed in tables after each grouping of slot assignment charts.

Installing VMEbus Boards

  1. Refer to the Backplane Slot Assignment Charts to determine where to install additional boards.
  2. Move boards in the cardcage as required.
  3. Configure backplane jumpers for BG3 and IACK. The IACK jumper for the last slot is not present on some backplanes. It is not needed.

Removing VMEbus Boards

  1. Refer to the Backplane Slot Assignment Charts to determine if other boards in the cardcage require repositioning.
  2. Configure backplane jumpers for BG3 and IACK.
  3. Install an air restrictor and the external filler panel in any unused slot.

References

  1. 5-Slot Office Pedestal Service Manual, 800-3272-12.Internet Link
  2. 12-Slot Office Pedestal Service Manual, 800-3255-14.Internet Link
  3. 12-Slot Office Pedestal Service Manual Errata, 800-6995-10.Internet Link
  4. 56-Inch Data Center Cabinet Service Manual, 800-3259-12.Internet Link
  5. 56-Inch Cabinet Service Manual Errata, 800-6996-10.Internet Link

ALM-1, ALM-2, and MCP

  1. The ALM-2 and MCP share the same base address and interrupt vector.
  2. The ALM-1 shares the same interrupt vector as the ALM-2 and MCP.
  3. Because of the conflict with the interrupt vector, no more than four ALM-1, ALM-2, or MCP boards can be installed at the same time.
  4. The ALM-1, ALM-2, or MCP boards must be installed in sequential address order, or a conflict with the interrupt vector may result.
  5. The maximum combination of ALM-2 and MCP boards allowed is eight. When mixing ALM-2 and MCP, the MCP must be addressed as Boards 1, 2, 3, and 4.
  6. The maximum number of MCP boards is four.
  7. The maximum number of ALM-2 boards is eight.

    BOARD ALM-1
    VECTOR
    ALM-2 & MCP
    VECTOR
    1
    2
    3
    4
    5
    6
    7
    8
    0x88
    0x89
    0x8a
    0x8b
    -
    -
    -
    -
    0x8b
    0x8a
    0x89
    0x88
    0xa0
    0xa1
    0xa2
    0xa3

SunLink Channel Adapter

  1. The SCA requires two slots. Remove Backplane Jumpers BG3 and IACK from both slots.
  2. Installing a 1/2" Tape Controller or an SMD Controller in an unused slot between the CPU and the SCA option may affect the SCA data throughput rate.

12-Slot Office Pedestal Backplane 501-1382

A cutout in the upper left corner of the 501-1382 Backplane allows the DC Wire Harness to be routed from the rear of the Backplane to the front of the Peripheral Tray.

VME to Multibus Adapter Board

Use Adapter board subassembly 501-1054-04, Rev. A, or greater, to avoid signal contention on the P2 bus. This change was effective in September 1985 (ECO 1850).

SBus Expansion Subsystem Board

The SBus Expansion Subsystem Board does not use the VMEbus.

SCSI Host Adapter Assemblies

  1. Sun 3x2 Adapter, 501-1269, Option 160A, is connected to J2 Rows A and C. There is no external connector.
  2. Sun 3x2 Adapter, 501-1191, Option 160B, is not connected to J2 Rows A and C. There is no external connector.
  3. Sun 3x2 Adapter, 501-1220, has no connection to J2 Rows A and C and has an external 50-pin connector.
  4. Sun-2 SCSI Host Adapter, 501-1167, has P2 bus connections and an external cable assembly. Do not substitute a 501-1236 Sun-3 SCSI for a 501-1045 Sun-2 SCSI in this assembly.


© 1987-1998, Sun Microsystems Inc.