
IBM CORPORATION

PC SERVER 320 (TYPE 8640)

MODELS MXO, MXT, MYO, MYT, MYR

Processor                  Pentium
Processor Speed            75/90MHz
Chip Set                   Unidentified
Video Chip Set             None
Maximum Onboard Memory     256MB
Maximum Video Memory       Unidentified
Cache                      256/512KB
BIOS                       Unidentified
Dimensions                 355mm x 304mm
I/O Options                External memory card, 32-bit PCI slots (2),
                           floppy drive interface,IDE interface, SCSI
                           connectors (3), parallel port, PS/2 mouse port,
                           serial ports (2), VGA port, cache slot
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  SCSI interface LED        J2         Serial port 1             J24

  IDE interface LED         J3         Reset switch              J25

  Chassis fan power         J4         SCSI interface            J28

  Speaker                   J6         SCSI fast/wide            J35
                                       internal interface

  Chassis fan power         J8         SCSI fast/wide            J39
                                       external interface

  Chassis fan power         J9         VGA port                  J40

  Power LED                 J10        PS/2 mouse port           J42

  IDE interface             J13        32-bit PCI slots       PC1 & PC2

  Parallel port             J19        Cache slot                SL1

  Floppy drive              J20        External memory           SL2
  interface                            card

  Serial port 2             J21

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J12              Open
      alter

      Password write enabled                J15        Pins 2 & 3 closed

      Password write disabled               J15        Pins 1 & 2 closed

      C2 cover open                         J16          Unidentified

      C2 keylock                            J17          Unidentified

     On board SCSI enabled                 J26        Pins 1 & 2 closed

      On board SCSI disabled                J26        Pins 2 & 3 closed

     On board video enabled                J27        Pins 1 & 2 closed

      On board video disabled               J27        Pins 2 & 3 closed

                           DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     8MB        (2) 1M x 36       None           None          None

     16MB       (2) 1M x 36   (2) 1M x 36        None          None

     16MB       (2) 2M x 36       None           None          None

     24MB       (2) 1M x 36   (2) 2M x 36        None          None

     24MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36       None

     24MB       (2) 2M x 36   (2) 1M x 36        None          None

     32MB       (2) 2M x 36   (2) 2M x 36        None          None

     32MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     32MB       (2) 2M x 36   (2) 1M x 36    (2) 1M x 36       None

     32MB       (2) 4M x 36       None           None          None

     40MB       (2) 1M x 36   (2) 4M x 36        None          None

     40MB       (2) 1M x 36   (2) 2M x 36    (2) 2M x 36       None

     40MB       (2) 2M x 36   (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     40MB       (2) 4M x 36   (2) 1M x 36        None          None

                       DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     48MB       (2) 2M x 36   (2) 4M x 36        None          None

     48MB       (2) 2M x 36   (2) 2M x 36    (2) 2M x 36       None

     48MB       (2) 4M x 36   (2) 2M x 36        None          None

     48MB       (2) 4M x 36   (2) 1M x 36    (2) 1M x 36       None

     56MB       (2) 1M x 36   (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     56MB       (2) 4M x 36   (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     64MB       (2) 4M x 36   (2) 4M x 36        None          None

     64MB       (2) 2M x 36   (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     64MB       (2) 4M x 36   (2) 2M x 36    (2) 2M x 36       None

     64MB       (2) 8M x 36       None           None          None

     72MB       (2) 1M x 36   (2) 8M x 36        None          None

     72MB       (2) 1M x 36   (2) 4M x 36    (2) 4M x 36       None

     72MB       (2) 8M x 36   (2) 1M x 36        None          None

     80MB       (2) 2M x 36   (2) 8M x 36        None          None

     80MB       (2) 2M x 36   (2) 4M x 36    (2) 4M x 36       None

     80MB       (2) 8M x 36   (2) 2M x 36        None          None

     80MB       (2) 8M x 36   (2) 1M x 36    (2) 1M x 36       None

     88MB       (2) 8M x 36   (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     96MB       (2) 4M x 36   (2) 8M x 36        None          None

     96MB       (2) 4M x 36   (2) 4M x 36    (2) 4M x 36       None

     96MB       (2) 8M x 36   (2) 4M x 36        None          None

     96MB       (2) 8M x 36   (2) 2M x 36    (2) 2M x 36       None

    104MB       (2) 1M x 36   (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

    112MB       (2) 2M x 36   (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

    112MB       (2) 8M x 36   (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

    128MB       (2) 8M x 36   (2) 8M x 36        None          None

    128MB       (2) 4M x 36   (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

    136MB       (2) 1M x 36   (2) 8M x 36    (2) 8M x 36       None

    144MB       (2) 2M x 36   (2) 8M x 36    (2) 8M x 36       None

    160MB       (2) 4M x 36   (2) 8M x 36    (2) 8M x 36       None

    160MB       (2) 8M x 36   (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

    192MB       (2) 8M x 36   (2) 8M x 36    (2) 8M x 36       None

    200MB       (2) 1M x 36   (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

    208MB       (2) 2M x 36   (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

    224MB       (2) 4M x 36   (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

    256MB       (2) 8M x 36   (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

  Note: Memory is located on the external memory card.

                CACHE CONFIGURATION

           Size                      SL1

          256KB            256KB module installed

          512KB            512KB module installed

                     CPU SPEED SELECTION

      CPU speed          Clock speed              J43

        75MHz               50MHz          Pins 2 & 3 closed

        90MHz               60MHz          Pins 1 & 2 closed

