
PINE TECHNOLOGY

PT-428

Processor        80486SX/80486DX/80486DX2
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM32MB
Cache            32/64/128/256KB
BIOS             AMI
Dimensions       250mm x 220mm
I/O Options      32-bit VESA local bus slots (3)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                 Location

  External battery          J1        Speaker                    J5

  Reset switch              J2        Power LED &                J6
                                      keylock

  Turbo switch              J3        32-bit VESA Local     SL1,SL2 & SL3
                                      bus slots

  Turbo LED                 J4

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     Battery type select - internal          JP1             Closed

      Battery type select - internal          JP1              Open

     Power good signal detect from           JP2           pins 1 & 2
      power supply                                            closed

      Power good signal detect from           JP2           pins 2 & 3
      board                                                   closed

     VGA card select - normal                JP3           pins 1 & 2
                                                              closed

      VGA card select - POWER 9000            JP3           pins 2 & 3
                                                              closed

     CPU test logic enabled                  JP6              Open

      CPU test logic disabled                 JP6             Closed

     (MCA1) LDEV# direct connect to          JP7           pins 1 & 2
      491 ELBA#                                               closed

      LDEV# through and gate to 491           JP7           pins 2 & 3
      ELBA#                                                   closed

     CPU speed select < 33MHz               JP11              Open

      CPU speed select > 33MHz               JP11             Closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     32KB        (4) 8K x 8        NONE       (1) 8K x 8

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

     128KB      (4) 32K x 8        NONE       (1) 8K x 8

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

                   CACHE JUMPER CONFIGURATION

   Size       JP12       JP13       JP14       JP15       JP16

   32MB       Open       2 & 3      Open       Open       Open

   64KB       Open       1 & 2      Open      Closed      Open

   128KB      2 & 3      2 & 3      Open      Closed     Closed

   256KB      1 & 2      1 & 2     Closed     Closed     Closed

  Note: pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

         CPU Type                    J17                     J18

          80486SX             pins 2 & 3 closed             Open

        80486DX/DX2            pins 1, 2, 3 & 4       pins 1 & 2 closed
                                   closed

     Pentium Overdrive         pins 1, 2, 3 & 4       pins 2 & 3 closed
                                   closed

       CPU SPEED CONFIGURATION (CHRONTEL CH9007C CLOCK)

        Speed                JP8                  JP9

        25MHz          pins 1 & 2 closed   pins 1 & 2 closed

        33MHz          pins 2 & 3 closed   pins 1 & 2 closed

        40MHz          pins 1 & 2 closed   pins 2 & 3 closed

       50iMHz          pins 1 & 2 closed   pins 1 & 2 closed

        50MHz          pins 2 & 3 closed   pins 2 & 3 closed

       66iMHz          pins 2 & 3 closed   pins 1 & 2 closed

               CPU SPEED CONFIGURATION (PHASE LINE PLL52C05)

      Speed               JP8               JP9                JP21

      25MHz            pins 1 & 2        pins 1 & 2           Closed
                        closed             closed

      33MHz            pins 2 & 3        pins 1 & 2           Closed
                        closed             closed

      40MHz            pins 1 & 2        pins 2 & 3            Open
                        closed             closed

      50iMHz           pins 1 & 2        pins 1 & 2           Closed
                        closed             closed

      50MHz            pins 2 & 3        pins 2 & 3            Open
                        closed             closed

      66iMHz           pins 2 & 3        pins 1 & 2           Closed
                        closed             closed

                    VESA ID4 CONFIGURATION

     50MHz delay             JP4                  JP5

      No delay         pins 1 & 2 closed   pins 1 & 2 closed

        1 - T          pins 2 & 3 closed   pins 2 & 3 closed

