
SKYWELL TECHNOLOGY CORPORATION, LTD.

PT2000AIO

Processor  CX486DX/AM486DX(PLUS)/TI486DX/CX486DX2/TI486DX2/AM486DX2/
           80486DX2/AM486DX4/CX486DX4/TI486DX4/80486DX4/SL80486DX4/P24D/P24T/CX5X86/CXM9/AM5X86
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Unidentified
Video Chip Unidentified
Set
Maximum    64MB
Onboard
Memory
Maximum    2MB
Video
Memory
Cache      128/256/512/1024KB
BIOS       Award
Dimensions 254mm x 218mm
I/O        Floppy drive interface, IDE interface, green PC connector, parallel port, serial
Options    ports (2), VGA feature connector, VGA port, riser slot, IR connector
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  IDE interface              CN4       Auxiliary keyboard         J10
                                       connector

  Floppy drive               CN5       VGA port                   J30
  interface

  Parallel port              CN6       VGA feature                J31
                                       connector

  Serial port 1              CN7       IDE interface LED         JP21

  Serial port 2              CN8       IR connector              JP25

  Reset switch               J8        Riser slot                 SL1

  Power LED & keylock        J9

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     VGA address select normal            JP12        Pins 1 & 2 closed
      operation

      VGA address select use A27 -         JP12        Pins 2 & 3 closed
      A31

     CMOS memory normal operation         JP23        Pins 1 & 2 closed

      CMOS memory clear                    JP23        Pins 2 & 3 closed

     Factory configured - do not          JP29          Unidentified
      alter

     Factory configured - do not          JP30          Unidentified
      alter

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (1) 256K x 36         None

       2MB        (1) 512K x 36         None

       2MB        (1) 256K x 36    (1) 256K x 36

       3MB        (1) 256K x 36    (1) 512K x 36

       3MB        (1) 512K x 36    (1) 256K x 36

       4MB         (1) 1M x 36          None

       4MB        (1) 512K x 36    (1) 512K x 36

       5MB        (1) 256K x 36     (1) 1M x 36

       5MB         (1) 1M x 36     (1) 256K x 36

       6MB        (1) 512K x 36     (1) 1M x 36

       6MB         (1) 1M x 36     (1) 512K x 36

       8MB         (1) 2M x 36          None

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

       9MB         (1) 2M x 36     (1) 256K x 36

      10MB         (1) 2M x 36     (1) 512K x 36

      12MB         (1) 2M x 36      (1) 1M x 36

      16MB         (1) 4M x 36          None

      17MB        (1) 256K x 36     (1) 4M x 36

      17MB         (1) 4M x 36     (1) 256K x 36

      18MB        (1) 512K x 36     (1) 4M x 36

      18MB         (1) 4M x 36     (1) 512K x 36

      20MB         (1) 1M x 36      (1) 4M x 36

      20MB         (1) 4M x 36      (1) 1M x 36

            DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1

      24MB         (1) 2M x 36      (1) 4M x 36

      32MB         (1) 8M x 36          None

      32MB         (1) 4M x 36      (1) 4M x 36

      33MB        (1) 256K x 36     (1) 8M x 36

      33MB         (1) 8M x 36     (1) 256K x 36

      34MB        (1) 512K x 36     (1) 8M x 36

      34MB         (1) 8M x 36     (1) 512K x 36

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

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

      40MB         (1) 2M x 36      (1) 8M x 36

      48MB         (1) 4M x 36      (1) 8M x 36

      48MB         (1) 8M x 36      (1) 4M x 36

      64MB         (1) 16M x 36         None

      64MB         (1) 8M x 36      (1) 8M x 36

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

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

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

   256KB (B)      (4) 64K x 8        None        (1) 32K x 8

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

   512KB (B)     (4) 128K x 8        None        (1) 32K x 8

      1MB        (4) 128K x 8    (4) 128K x 8    (1) 64K x 8

                        CACHE JUMPER CONFIGURATION

      Size               J1                 J2                 J3

      128KB           Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

    256KB (A)         Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

    256KB (B)         Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

    512KB (A)         Pins 1 & 2        Pins 1 & 2      Pins 2 & 3 closed
                       closed             closed

    512KB (B)         Pins 1 & 2        Pins 1 & 2      Pins 2 & 3 closed
                       closed             closed

       1MB            Pins 1 & 2        Pins 1 & 2      Pins 2 & 3 closed
                       closed             closed

                    CACHE JUMPER CONFIGURATION (CONT)

    Size           J4              J5             J6             J7

    128KB       Pins 1 & 2     Pins 2 & 3     Pins 1 & 2      Pins 1 & 2
                 closed          closed         closed         closed

  256KB (A)     Pins 1 & 2     Pins 1 & 2     Pins 1 & 2      Pins 1 & 2
                 closed          closed         closed         closed

  256KB (B)     Pins 1 & 2     Pins 1 & 2     Pins 2 & 3      Pins 1 & 2
                 closed          closed         closed         closed

  512KB (A)     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2      Pins 1 & 2
                 closed          closed         closed         closed

  512KB (B)     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2      Pins 2 & 3
                 closed          closed         closed         closed

     1MB        Pins 2 & 3     Pins 1 & 2     Pins 1 & 2      Pins 1 & 2
                 closed          closed         closed         closed

            VIDEO MEMORY CONFIGURATION

      Size            Bank 0          Bank 1

       1MB             1MB             None

       2MB             1MB              1MB

  Note: The size of the chips are unidentified.

                            CPU SPEED SELECTION

      Speed               JP9               JP10               JP11

      25MHz            Pins 2 & 3        Pins 1 & 2         Pins 2 & 3
                        closed             closed             closed

      33MHz            Pins 2 & 3        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

      40MHz            Pins 1 & 2        Pins 1 & 2         Pins 2 & 3
                        closed             closed             closed

      50iMHz           Pins 2 & 3        Pins 1 & 2         Pins 2 & 3
                        closed             closed             closed

      50MHz            Pins 1 & 2        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

      66iMHz           Pins 2 & 3        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

      75iMHz           Pins 2 & 3        Pins 1 & 2         Pins 2 & 3
                        closed             closed             closed

     100iMHz           Pins 2 & 3        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

                            CPU TYPE SELECTION

       Type           JP1        JP2        JP4        JP5         JP6

     CX486DX         Open       1 & 2      1 & 2      1 & 2       1 & 2

  AM486DX (PLUS)     1 & 2      1 & 2      2 & 3      2 & 3       1 & 2

     TI486DX         Open       1 & 2      1 & 2      1 & 2       1 & 2

     CX486DX2        Open       1 & 2      1 & 2      1 & 2       1 & 2

     TI486DX2        Open       1 & 2      1 & 2      1 & 2       1 & 2

     AM486DX2        1 & 2      1 & 2      2 & 3      2 & 3       1 & 2

     80486DX2        Open       1 & 2      1 & 2       Open       1 & 2

     AM486DX4        1 & 2      1 & 2      2 & 3      2 & 3       1 & 2

     CX486DX4        Open       1 & 2      1 & 2      1 & 2       1 & 2

     TI486DX4        Open       1 & 2      1 & 2      1 & 2       1 & 2

     80486DX4        Open       1 & 2      1 & 2       Open       1 & 2

    SL80486DX4       Open       1 & 2      1 & 2       Open       1 & 2

       P24D          1 & 2      1 & 2      1 & 2      2 & 3       1 & 2

       P24T          1 & 2      1 & 2      1 & 2      2 & 3       1 & 2

      CX5X86         1 & 2      1 & 2      1 & 2      2 & 3       1 & 2

      CX M9          Open       1 & 2      1 & 2      2 & 3       1 & 2

      AM5X86         1 & 2      1 & 2      2 & 3      2 & 3       1 & 2

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

     Type        JP7    JP35        RN1           RN1            RN3

    CX486DX      1 &    1 & 2        Not       Installed          Not
                  2              installed                    installed

    AM486DX      1 &    1 & 2        Not           Not        Installed
    (PLUS)        2              installed     installed

    TI486DX      1 &    1 & 2        Not       Installed          Not
                  2              installed                    installed

   CX486DX2      1 &    1 & 2        Not       Installed          Not
                  2              installed                    installed

   TI486DX2      1 &    1 & 2        Not       Installed          Not
                  2              installed                    installed

   AM486DX2      1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

   80486DX2      1 &    2 & 3        Not           Not        Installed
                  2              installed     installed

   AM486DX4      1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

   CX486DX4      1 &    1 & 2        Not       Installed          Not
                  2              installed                    installed

   TI486DX4      1 &    1 & 2        Not       Installed          Not
                  2              installed                    installed

   80486DX4      1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

  SL80486DX4     1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

     P24D        1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

     P24T        1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

    CX5X86       1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

     CX M9       1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

    AM5X86       1 &    1 & 2        Not           Not        Installed
                  2              installed     installed

  Note: Pins designated should be in the closed position.

                    CPU VOLTAGE SELECTION

       Voltage               J25                  JP24

        3.3v                 Open          Pins 2 & 3 closed

        3.45v                Open          Pins 1 & 2 closed

         5v            Pins 1 & 2 closed          Open

                   SERIAL PORT RI SELECTION

       Setting            J26 (COM1)           J27 (COM2)

         5v            Pins 1 & 2 closed   Pins 1 & 2 closed

         RI            Pins 2 & 3 closed   Pins 2 & 3 closed

                  SERIAL PORT DCD SELECTION

       Setting            J28 (COM1)           J29 (COM2)

         5v            Pins 1 & 2 closed   Pins 1 & 2 closed

         DCD           Pins 2 & 3 closed   Pins 2 & 3 closed

