Sun Microsystems, Inc.   Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition
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SPARCstation 20

SS20 / Netra i20 / Netra s20 / Netra i600 / Netra i625

501-2324 501-2924 501-2961
0MB FRU
w/o MBus Module
MSBI Version 0 - 3
0MB FRU
w/o MBus Module
MSBI Version 3
0MB FRU
w/o MBus Module
MSBI Version 3

*   This installation sequence does not match the bank order.
*    SS20 Service Manual, 801-6189.
This installation order matches the bank order.
SS20 DSIMM Installation, 801-6185.
SS10SX and SS20 System Configuration Guide, 801-7287.

Notes

  1. Part number 501-2924 is a new board with MSBI Version 3.
  2. Part number 501-2961 is a repaired 501-2324 with MSBI Version 3.

FAB 270-2324-02 Jumper Settings

When Pins 1-2 on J1401 are jumpered, the MBus speed is set to 40MHz.

When Pins 2-3 on J1401 are jumpered, the MBus speed is selected by the module installed in MBus 0. The MBus speed of the SM50 is 50MHz. The MBus speed of the SM51 is 40MHz. The MBus speed of the SM61 is 50MHz.

JUMPER PINS SETTING DESCRIPTION
J0801
J0802
J0801
J0802
1-2
1-2
2-3
2-3
In
In
In*
In*
Select RS-232 (+12V)
Select RS-232 (-12V)
Select RS-423
Select RS-423
J0805
J0806
J0805
J0806
1-2
1-2
1-2
1-2
Out*
Out*
In
In
Port B asynchronous
Port B asynchronous
Port B synchronous
Port B synchronous
J1401 1-2
2-3
In
In*
40MHz MBus
40/50MHz MBus
J1601 1-2 N/A Ground test point
J1602 1-2 N/A Ground test point
J1603 1-2 N/A Ground test point
J1703 1-2 Out Test point tpe<3>
J1704 1-2 Out Test point tpe<2>
J1705 1-2 Out Test point tpe<1>
J1706 1-2 Out Test point tpe<0>
J1707 1-2 Out Test point edgeon
*   Default setting
Requires an adapter that is not available from Sun


SPARCstation 20

SS20 / Netra i20 / Netra s20 / Netra i600 / Netra i625

501-2324 501-2924 501-2961
0MB FRU
w/o MBus Module
MSBI Version 0 - 3
0MB FRU
w/o MBus Module
MSBI Version 3
0MB FRU
w/o MBus Module
MSBI Version 3

*   This installation sequence does not match the bank order.
*    SS20 Service Manual, 801-6189.
This installation order matches the bank order.
SS20 DSIMM Installation, 801-6185.
SS10SX and SS20 System Configuration Guide, 801-7287.

Notes

  1. Part number 501-2924 is a new board with MSBI Version 3.
  2. Part number 501-2961 is a repaired 501-2324 with MSBI Version 3.

FAB 270-2324-03 / FAB 270-2324-04 Jumper Settings

When Pins 1-2 on J1401 are jumpered, the MBus speed is set to 40MHz.

When Pins 2-3 on J1401 are jumpered, the MBus speed is selected by the module installed in MBus 0. The MBus speed of the SM50 is 50MHz. The MBus speed of the SM51 is 40MHz. The MBus speed of the SM61 is 50MHz.

JUMPER PINS SETTING DESCRIPTION
J0801
J0802
J0801
J0802
1-2
1-2
2-3
2-3
In
In
In*
In*
Select RS-232 (+12V)
Select RS-232 (-12V)
Select RS-423
Select RS-423
J0805
J0806
J0805
J0806
1-2
1-2
1-2
1-2
Out*
Out*
In
In
Port B asynchronous
Port B asynchronous
Port B synchronous
Port B synchronous
J1401 1-2
2-3
In
In*
40MHz MBus
40/50MHz MBus
J1601 1-2 N/A Ground test point
J1602 1-2 N/A Ground test point
J1603 1-2 N/A Ground test point
J1703 1-2 Out Test point tpe<3>
J1704 1-2 Out Test point tpe<2>
J1705 1-2 Out Test point tpe<1>
J1706 1-2 Out Test point tpe<0>
J1707 1-2 Out Test point edgeon
*   Default setting
Requires an adapter that is not available from Sun

System Board Backpanel and Connectors

Notes

  1. The minimum operating system is Solaris 2.3 or Solaris 1.1.1 Revision B.
  2. Use SIMMs 501-2479 (16MB), 501-2622 (32MB), and 501-2480 (64MB).
  3. Install Solaris 2.3 Patch >=101318-34 when:
    One 32MB SIMM is mixed with seven 16 or 64MB SIMMs
    Two 32MB SIMMs are mixed with five or more 16 or 64MB SIMMs
    Three 32MB SIMMs are mixed with three or more 16 or 64MB SIMMs
    Four 32MB SIMMs are mixed with one or more 16, 32, or 64MB SIMMs.
  4. Use the sxconfig (1M) command to configure contiguous memory.
  5. Do NOT mix SPARC modules of different types or speeds.
  6. The 100MHz and 125MHz hyperSPARC Modules require OBP 2.19.
  7. SuperSPARC II Modules require Boot PROM 2.22.
  8. The 150MHz hyperSPARC Module requires OBP 2.25.

ZX and TurboZX Notes

  1. Poor performance may occur when running XGL applications with the ZX and TurboZX frame buffers on system boards with MSBI Versions 0, 1, and 2. Refer to BugID 1173967 and FCO A0073.
  2. Use the .attributes OBP command or the prtconf -vp Unix command to determine the MSBI Version.
    ok cd /iommu
    ok .version
    Implementation: 00000001
    Version: 00000000 or 00000001 or 00000002 or 00000003

References

  1. SPARCstation 20 Service Manual, 801-6189.
  2. SS20 DSIMM Installation, 801-6185.
  3. SS10SX and SS20 System Configuration Guide, 801-7287.


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