IBM CORPORATION

PC 330/350 SERIES (TYPE 65X6)

Processor                  Pentium
Processor Speed            75/90/100MHz
Chip Set                   Unidentified
Video Chip Set             Unidentified
Maximum Onboard Memory     128MB
Maximum Video Memory       2MB
Cache                      256/512KB
BIOS                       Unidentified
Dimensions                 254mm x 218mm
I/O Options                Floppy drive interface, IDE interfaces (2),
                           parallel port, PS/2 mouse port, serial ports
                           (2), VESA feature connector, VGA port, riser
                           slot
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  VGA port                    CN1      IDE interface               CN8

  Parallel port               CN2      Floppy drive interface      CN9

  Serial port                 CN3      Voltage regulator           J1

  Serial port                 CN4      Front panel connector      J1D1

  PS/2 mouse port             CN5      Front panel connector      J2A2

  VESA feature connector      CN6      Riser slot                  SL1

  IDE interface               CN7

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Flash BIOS normal operation             J5J1          Pins 1 & 3
                                                              closed

      Flash BIOS clear                        J5J1          Pins 1 & 2
                                                              closed

  »   Password normal operation              SW1/3             Off

      Password clear                         SW1/3              On

  »   CMOS memory normal operation           SW1/4             Off

      CMOS memory clear                      SW1/4              On

  »   Factory configured - do not alter      SW1/5             Off

                            DRAM CONFIGURATION

          Size                    Bank 0                   Bank 1

           8MB                 (2) 1M x 36                  None

          16MB                 (2) 2M x 36                  None

          16MB                 (2) 1M x 36              (2) 1M x 36

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

          32MB                 (2) 4M x 36                  None

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

          40MB                 (2) 4M x 36              (2) 1M x 36

          48MB                 (2) 4M x 36              (2) 2M x 36

          64MB                 (2) 8M x 36                  None

          64MB                 (2) 4M x 36              (2) 4M x 36

          72MB                 (2) 8M x 36              (2) 1M x 36

          80MB                 (2) 8M x 36              (2) 2M x 36

          128MB                (2) 8M x 36              (2) 8M x 36

  Note: Board also accepts x 32 SIMMs. The location of banks 0 & 1 are
  unidentified.

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

     512KB      (4) 64K x 8    (4) 64K x 8    (1) 32K x 8

  Note: The location of banks 0 & 1 are unidentified.

  CACHE SWITCH CONFIGURATION

   Size     SW1/1      SW1/2

   None       On        N/A

  256KB      Off        Off

  512KB      Off        On

                        VIDEO MEMORY CONFIGURATION

          Size                    Bank 0                   Bank 1

           1MB                     1MB                      None

           2MB                     1MB                      1MB

            Note: Bank 0 is factory installed and is not configurable.
            The size of the video memory chips are unidentified.

                            CPU SPEED SELECTION

  CPU speed      Clock     Multiplier      SW1/6       SW1/7      SW1/8
                speed

    75MHz       50MHz         1.5x          Off         Off        Off

    90MHz       60MHz         1.5x          Off         On         Off

   100MHz       66MHz         1.5x          Off         Off         On

                            CPU TYPE SELECTION

                 Type                                 J9C1

  »                 VR                         Pins 1 & 3 closed

                   VRE                         Pins 5 & 7 closed

                       ISA BUS CLOCK SPEED SELECTION

         CPU speed              ISA clock speed              J5J1

  »      75MHz (1/6 clock           8.33MHz            Pins 5 & 7 open
             speed)

         75MHz (1/8 clock           6.25MHz           Pins 5 & 7 closed
             speed)

         90MHz (1/6 clock            10MHz             Pins 5 & 7 open
             speed)

  »      90MHz (1/8 clock           7.5MHz            Pins 5 & 7 closed
             speed)

        100MHz (1/6 clock            11MHz             Pins 5 & 7 open
             speed)

        100MHz (1/8 clock           8.25MHz           Pins 5 & 7 closed
             speed)