• Oopsie! Add Lacuna! Re: EOS memory reliability and technology advantage

    From Louis Ohland@21:1/5 to Louis Ohland on Fri Mar 31 05:30:47 2023
    Lacuna also supports 16MB parity.

    Louis Ohland wrote:
    Nice that someone is awake.

    Buzzkill, the EOS reports itself as parity, so the system in question
    has to support 16MB parity SIMMs.

    9585 -X or -K/N

    4MB and 8MB EOS are supported by all PS/2s, as their size is supported.

    The IBM ECC-on-SIMM (EOS) part numbers are
    11H0618 (8MB)
    11H0621 (16MB)
    11H0624 (32MB)

    Lead composition:

    11D - Tin
    11E - Gold

    ECC controller on EOS is 73G6876.
      These are a sea of gates, not a specific ASIC

    Toshiba TC160G11AT
    AMI 6553-013

    https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/5/897/ENUS195-075/index.html&request_locale=en



    Options by IBM: IBM ECC-on-SIMM Memory Upgrades
    Announcement Number: 195-075

    Normal Height: 26.4mm
    Tall Height: 41.7mm
    Wide Width: 14.2mm
    Normal Width: 10.1mm

    +-------------------------------------------------------------------+
    | o  SEC high-speed ECC algorithm                                   |
    | o  70ns (x36 bits) 72-pin JEDEC standard SIMM                     |
    | o  IBM or industry standard presence detects, gold tabs           |
    | o  Fit in standard x36 SIMM socket                                |
    | o  No processor changes required                                  |
    |                                                                   |
    | o  4MB (Wide) 70ns ECC-on-SIMM Memory Upgrade:                    |
    |    -  Selected PS/2(R) and IBM PC Server 300 and 320 systems      |
    |                                                                   |
    | o  8MB (Wide) 70ns ECC-on-SIMM Memory Upgrade:                    |
    |    -  Selected PS/2 systems                                       |
    |                                                                   |
    | o  8MB (Tall), 16MB, and 32MB 70ns ECC-on-SIMM Memory Upgrades:   | |    -  IBM PC Server 300 and 320 systems                           |
    +-------------------------------------------------------------------+

    The following memory options complement the Options by IBM family of offerings:

        4MB 70ns ECC-on-SIMM Memory Upgrade
        8MB (Wide) 70ns ECC-on-SIMM Memory Upgrade
        8MB (Tall) 70ns ECC-on-SIMM Memory Upgrade
        16MB 70ns ECC-on-SIMM Memory Upgrade
        32MB 70ns ECC-on-SIMM Memory Upgrade

    The IBM ECC-on-SIMM Memory Upgrades offer 4MB, 8MB, 16MB and 32MB of error-correcting-code (ECC) memory on a SIMM. This upgrade family -- a plug-compatible, fully retrofittable series of 70ns memory modules --

    allows you to upgrade a parity system to a fully functional single-error-correct (SEC) ECC system. The ECC function is completely self-contained on the SIMM and provides correction of single-bit errors
    that

    occur in each byte of SIMM data. No processor changes are required to
    receive the enhanced reliability this SIMM family offers.

    The ECC-on-SIMM Memory Upgrades are organized as x36 bits, support
    parity, and are packaged on a 72-pin JEDEC (Joint Electronic Device Engineering Council) standard SIMM with gold tabs. The 4MB SIMM has IBM

    presence detects, while the 8MB (Tall and Wide), 16MB and 32MB SIMMs
    have industry standard presence detects.

    Use of the ECC-on-SIMM Memory Upgrades is recommended when processing critical applications on systems without native ECC. Enhanced data
    integrity and memory reliability are provided with no system performance

    penalty. The upgrades are extremely important in server environments
    where single-bit memory errors can impact all users on the network.

                                  Part         Availability      Unit
    Description                   Number       Date              Price


    4MB 70ns ECC-on-SIMM        75G6500
    8MB (Wide) 70ns ECC-on-SIMM    75G6501
    8MB (Tall) 70ns ECC-on-SIMM    11H0618
    16MB 70ns ECC-on-SIMM        11H0621
    32MB 70ns ECC-on-SIMM        11H0624



    IBM 4MB 70NS ECC-ON-SIMM MEMORY UPGRADE (#1500, 75G6500)


    The 4MB 70ns ECC-on-SIMM Memory Upgrade module is organized as 1M x 36, supports parity, and is packaged on a 72-pin JEDEC standard SIMM with
    gold tabs and IBM presence detects.

    Technical Information

    Physical Specifications

        Dimensions:
            Height: 26.4 mm (1.04 in.)
            Width: 108 mm (4.25 in.)
            Depth: 10.1 mm (0.4 in.)
            Weight: .025kg (0.055 lb)

    Operating Environment

        Temperature: 0(degs)C to 65(degs)C (32(degs)F to 149(degs)F)
        Relative humidity: 8% to 80%
        Wet bulb: 23(degs)C (73(degs)F)
        Electrical power: 1620 mA max

    Hardware Requirements: The 4BM 70ns ECC-on-SIMM Memory Upgrade (#1500, 75G6500) is supported on the following IBM platforms:

                        Machine
    Description         Type           Model


    PS/2                8525           K00, K01, L02
                        8535           040, 043, 050, 055,
                                       14X, 24X
                        8540           040, 043, 045
                        8556           043, 045, 055, 059,
                                       14X, 15X, 24X, 25X
                        8557           045, 049, 055, 059,
                                       05F, 259
                        8590(1)        0J5, 0J9, 0JD, 0JF,
                                       0K9, 0KD, 0KF, 0GF,
                                       0G5, 0G9, 0HF, 0H5, 0H9,
                                       0L9, 0LF
                        8595(1)        0J9, 0JD, 0JF, 0KD,
                                       0KF, 0G5, 0G9, 0GF,
                                       0H5, 0H9, 0HF, 0L9,
                                       0LF, 0X6, 0XA, 0XF,
                                       0XG
                        9553           0B7, 0BB, 1BX, 2BX
                        9556           DBA, DB6, DEB, DED,
                                       DE9, KBA, KB6, QBA,
                                       QB6, 0BA, 0B6, 1EX, 2EX
                        9557           DBA, DBG, DB6, DEB,
                                       DED, DEG, DE9, KBA,
                                       KBG, KB6, QBA, QB6,
                                       0BA, 0B6, 1BA, 2BA,
                                       6EB, 6EG, 7EB, 7EG
                        9576           DUA,DU6, KUA, KU6,
                                       QUA, QU6, 0UA, 0U6
                        9577           DNA, DNG, DUA, DUG,
                                       KNA, KNG, KUA, KUG
                                       QBA, QB6, QNA, QUA,
                                       0NA, 0NF, 0UA, 0UF,
                                       1NA, 1UA,
                        9585(1)        0X6, 0XA, 0XF, 0XG,
                                       0KG, 0KT, 0NG, 0NT
                        9590(1)        DLA, 0LA, QLA, KLA,
                                       0LF, DLG, KLG
                        9595(1)        0LF, 0LG


    PC Server           8640(1)        0N0, 0NJ, 0P0, 0PT,
                                       0Y0, 0YT, 1Y0, 1YT

    (1)   These systems must be upgraded with sets of two 75G6500
          upgrades.

    Limitations

        Parity memory cannot coexist with the 4MB 70ns ECC-on-SIMM Memory Upgrade in the same system.
        8590, 8595, 9590, and 9595 models with native ECC (xMx,1Nx, xPx,
    xQx, xTx, xVx) are not supported.


    IBM 8MB (WIDE) 70NS ECC-ON-SIMM MEMORY UPGRADE (#6501, 675G6501)

    The 8MB (Wide) 70ns ECC-on-SIMM Memory Upgrade module is organized as 2M
    x 36, supports parity, and is packaged on a 72-pin JEDEC standard SIMM
    with gold tabs and industry standard presence detects.

    Technical Information

    Physical Specifications

        Dimensions:
            Height: 26.4 mm (1.04 in.)
            Width: 108 mm (4.25 in.)
            Depth: 14.2 mm (0.56 in.)
            Weight: .041 kg (0.09 lb)

    Operating Environment

        Temperature: 0(degs)C to 65(degs)C (32(degs)F to 149(degs)F)
        Relative humidity: 8% to 80%
        Wet bulb: 23(degs)C (73(degs)F)
        Electrical power: 1656 mA max


    Hardware Requirements: The 8MB (Wide) 70ns ECC-on-SIMM Memory Upgrade
    (#6501, 675G6501) is supported on the following IBM platforms:

                             Machine Description              Type                Model


    PS/2                     8556                043, 045, 055, 059,
                                                 14X, 15X, 24X, 25X
                             8557                045, 049, 055, 059,
                                                 05F, 259
                             8590(1)             0J5, 0J9, 0JD, 0JF,
                                                 0K9, 0KD, 0KF, 0G5,
                                                 0G9, 0GF, 0H5, 0H9,
                                                 0HF, 0L9, 0LF
                             8595(1)             0J9, 0JD, 0JF, 0KD,
                                                 0KF, 0G5, 0G9, 0GF,
                                                 0H5, 0H9, 0HF, 0L9,
                                                 0LF, 0X6, 0XA, 0XF,
                                                 0XG
                             9556                DBA, DB6, DEB, DED,
                                                 DE9, KBA, KB6, QBA,
                                                 QB6, 0BA, 0B6, 1EX,
                                                 2EX
                             9557                DBA, DBG, DB6, DEB,
                                                 DED, DEG, DE9, KBA,
                                                 KBG, KB6, QBA, QB6,
                                                 0BA, 0B6, 1BA, 2BA,
                                                 6EB, 6EG, 7EB, 7EG
                             9576                DUA, DU6, KUA, KU6,
                                                 QUA, QU6, 0UA, 0U6
                             9577                DNA, DNG, DUA, DUG,
                                                 KNA, KNG, KUA, KUG,
                                                 QBA, QB6, QNA, QUA,
                                                 0NA, 0NF,0UA, 0UF,
                                                 1NA, 1UA
                             9585(1)             0X6, 0XA, 0XF, 0XG,
                                                 0KG, 0KT, 0NG, 0NT
                             9590(1)             DLA, 0LA, QLA, KLA,
                                                 0LF, DLG, KLG
                             9595(1)             0LF, 0LG

    (1)   These systems must be upgraded with sets of two 75G6501 upgrades.

    Limitations

        Parity SIMMs cannot coexist with the IBM 8MB (Wide) 70ns
    ECC-on-SIMM Memory Upgrade in the same system.
        8590, 8595, 9590, and 9595 models with native ECC (xMx, 1Nx, xPx, xQx, xTx, xVx) are not supported.
        Maximum system memory is not attainable on 8556, 8557, 9556, 9557, 9576, and 9577 models due to physical constraints:
            Two 8MB (Wide) ECC-on-SIMM Memory Upgrades cannot be installed
    in adjacent SIMM sockets.
            Models with three SIMM sockets have a maximum of two 8MB (Wide)
    and one 4MB ECC-on-SIMM Memory Upgrades.
            Models with four SIMM sockets have a maximum of two 8MB (Wide)
    and two 4MB ECC-on-SIMM Memory Upgrades.



    IBM 8MB (TALL) 70NS ECC-ON-SIMM MEMORY UPGRADE (#1681, 11H0618)

    The 8MB (Tall) 70ns ECC-on-SIMM Memory Upgrade module is organized as 2M
    x 36, supports parity, and is packaged on a 72-pin JEDEC standard SIMM
    with gold tabs and industry standard presence detects.

    Technical Information

    Physical Specifications

        Dimensions:
            Height: 41.7 mm (1.64 in.)
            Width: 108 mm (4.25 in.)
            Depth: 10.1 mm (0.40 in.)
            Weight: .039 kg (0.09 lb)

    Operating Environment

        Temperature: 0(degs)C to 65(degs)C (32(degs)F to 149(degs)F)
        Relative humidity: 8% to 80%
        Wet bulb: 23(degs)C (73(degs)F)
        Electrical power: 1656 mA max


    Hardware Requirements: The 8MB (Tall) 70ns ECC-on-SIMM Memory Upgrade is supported on the following IBM platforms:

                        Machine
    Description         Type           Model


    PC Server           8640(1)        0N0, ONJ, 0P0, 0PT, 0Y0,
                                       0YT, 1Y0, 1YT

    (1)   These systems must be upgraded with sets of two 11H0618
          upgrades.

    Limitations: Parity SIMMs cannot coexist with the 8MB (Tall) 70ns
    ECC-on-SIMM Memory Upgrade in the same system.


    IBM 16MB 70NS ECC-ON-SIMM MEMORY UPGRADE (#1621, 11H0621)


    The 16MB 70ns ECC-on-SIMM Memory Upgrade module is organized as 4M x 36, supports parity, and is packaged on a 72-pin JEDEC standard SIMM with
    gold tabs and industry standard presence detects.


    Physical Specifications

        Dimensions:
            Height: 26.4 mm (1.04 in.)
            Width: 108 mm (4.25 in.)
            Depth: 10.1 mm (0.40 in.)
            Weight: .025 kg (0.06 lb)

    Operating Environment

        Temperature: 0(degs)C to 65(degs)C (32(degs)F to 149(degs)F)
        Relative humidity: 8% to 80%
        Wet bulb: 23(degs)C (73(degs)F)
        Electrical power: 1440 mA max

    Hardware Requirements: The 16MB 70ns ECC-on-SIMM Memory Upgrade  is supported on the following IBM platforms:

                        Machine
    Description         Type           Model


    PC Server           8640(1)        0N0, ONJ, 0P0, 0PT, 0Y0,
                                       0YT, 1Y0, 1YT

    (1)   These systems must be upgraded with sets of two 11H0621 upgrades.

    Limitations: Parity SIMMs cannot coexist with the 16MB 70ns ECC-on-SIMM Memory Upgrade in the same system.



    IBM 32MB 70NS ECC-ON-SIMM MEMORY UPGRADE (#1624, 11H0624)

    The 32MB 70ns ECC-on-SIMM Memory Upgrade module is organized as 8M x 36, supports parity, and is packaged on a 72-pin JEDEC standard SIMM with
    gold tabs and industry standard presence detects.

    Technical Information

    Physical Specifications

        Width: 108 mm (4.25 in.)
        Depth: 10.1 mm (0.40 in.)
        Length: 41.7 mm (1.64 in.)
        Weight: .039 kg (0.09 lb)

    Operating Environment

        Temperature: 0(degs)C to 65(degs)C (32(degs)F to 149(degs)F)
        Relative humidity: 8% to 80%
        Wet bulb: 23(degs)C (73(degs)F)
        Electrical power: 1464 mA max


    Hardware Requirements: The 32MB 70ns ECC-on-SIMM Memory Upgrade  is supported on the following IBM platforms:

                        Machine
    Description         Type           Model


    PC Server           8640(1)        0N0, ONJ, 0P0, 0PT, 0Y0,
                                       0YT, 1Y0, 1YT

    (1)   These systems must be upgraded with sets of two 11H0624 upgrades.

    Limitations: Parity SIMMs cannot coexist with the 32MB 70ns ECC-on-SIMM Memory Upgrade in the same system.


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