IBM CORPORATION

PC SERVER 300 (TYPE 8640) OPO, 1P0, OPT, 1PT

Processor                  Pentium
Processor Speed            60MHz
Chip Set                   Unidentified
Video Chip Set             None
Maximum Onboard Memory     192MB
Maximum Video Memory       None
Cache                      256/512KB
BIOS                       Unidentified
Dimensions                 355mm x 304mm
I/O Options                32-bit PCI slots (3), floppy drive interface,
                           IDE interface, parallel port, PS/2 mouse port,
                           serial ports (2)
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Speaker                    J11       IDE interface              J22

  PS/2 mouse port            J15       Auxiliary power             P3

  Parallel port              J18       Power LED                   W9

  Floppy drive interface     J19       IDE interface LED          W10

  Serial port 1              J20       32-bit PCI slots         PC1 – PC3

  Serial port 2              J21

                        USER CONFIGURABLE SETTINGS

                Function                      Label          Position

  »   Parity check enabled                     J1             Closed

      Parity check disabled                    J1              Open

  »   Cache type select write back             J2              Open

      Cache type select write through          J2             Closed

  »   Oscillator for U15                       J6           Pins 1 & 2
                                                              closed

      Clock synthesizer                        J6           Pins 2 & 3
                                                              closed

  »   BIOS normal operation                    W2           Pins 2 & 3
                                                              closed

      BIOS recovery mode                       W2           Pins 1 & 2
                                                              closed

  »   PS/2 mouse enabled                       W6             Closed

      PS/2 mouse disabled                      W6              Open

  »   Factory configured - do not alter        W20          Pins 2 & 3
                                                              closed

                      SIMM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      8MB         (2) 1M x 36        None            None

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

      16MB        (2) 2M x 36        None            None

      24MB        (2) 1M x 36     (2) 1M x 36    (2) 1M x 36

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

      32MB        (2) 4M x 36        None            None

      48MB        (2) 2M x 36     (2) 2M x 36    (2) 2M x 36

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

      64MB        (2) 8M x 36        None            None

      96MB        (2) 4M x 36     (2) 4M x 36    (2) 4M x 36

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

     128MB       (2) 16M x 36        None            None

     192MB        (2) 8M x 36     (2) 8M x 36    (2) 8M x 36

                 CACHE CONFIGURATION

  Note: The location of the cache is unidentified.

                        CACHE JUMPER CONFIGURATION

      Size               J3                 J4                 J35

      None            Pins 1 & 2        Pins 1 & 2            Open
                       closed             closed

      256KB           Pins 2 & 3        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

      512KB           Pins 2 & 3        Pins 2 & 3      Pins 2 & 3 closed
                       closed             closed

  CPU CLOCK SPEED SELECTION

     Speed           J5

     50MHz         Closed

     66MHz          Open

                           CPU VOLTAGE SELECTION

    Voltage             J40                J41                 J42

       5v              Closed              N/A                 N/A

      5.3v          Power module       Power module        Power module
                     installed          installed           installed

  Note: All pins on J40 must be closed.

                    DMA CHANNEL SELECTION

       Channel               W14                  W16

          6            Pins 1 & 2 closed   Pins 1 & 2 closed

          7            Pins 2 & 3 closed   Pins 2 & 3 closed