
QDI COMPUTER, INC.

VL/ISA-PB486P3

Processor  80486SX/CX486DX/80486DX/SL80486DX/80486DX2/(SL)80486DX2/
           AM486/80486DX4
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed      100(internal)MHz
Chip Set   OPTI
Video Chip None
Set
Maximum    64MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      128/256/512KB
BIOS       AMI
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                   Location     Purpose                Location

  Power LED & keylock          J2        Reset switch              S1

  Speaker                     JP18       32-bit VESA local     SL1 - SL3
                                         bus slots

  Green PC connector          JP21       Turbo LED               TBLED

  Green PC connector          JP32       Turbo switch             TBSW

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Factory configured - do not alter       JP12             Open

     Factory configured - do not alter       JP14          Pins 1 & 2
                                                              closed

     Factory configured - do not alter       JP23             Open

     CMOS memory normal operation            JP26          Pins 2 & 3
                                                              closed

      CMOS memory clear                       JP26          Pins 1 & 2
                                                              closed

     Monitor type select color               JP30            Closed

      Monitor type select monochrome          JP30             Open

     Factory configured - do not alter       JP37          Pins 1 & 2
                                                              closed

     Factory configured - do not alter       JP44          Pins 2 & 3
                                                              closed

     Factory configured - do not alter       JP45          Pins 2 & 3
                                                              closed

     Factory configured - do not alter       JP46          Pins 2 & 3
                                                              closed

                        DRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

       1MB         (4) 256K x 9         None            None

       2MB             None        (1) 512K x 36        None

     4MB (A)        (4) 1M x 9          None            None

     4MB (B)           None         (1) 1M x 36         None

     4MB (C)           None        (1) 512K x 36    (1) 512K x 36

       6MB             None        (1) 512K x 36     (1) 1M x 36

     8MB (A)        (4) 1M x 9          None         (1) 1M x 36

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

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

      10MB             None        (1) 512K x 36     (1) 2M x 36

    12MB (A)        (4) 1M x 9          None         (1) 2M x 36

    12MB (B)           None         (1) 1M x 36      (1) 2M x 36

    16MB (A)        (4) 4M x 9          None            None

    16MB (B)           None         (1) 4M x 36         None

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

    16MB (D)        (4) 4M x 9      (1) 2M x 36      (1) 1M x 36

    20MB (A)        (4) 1M x 9          None         (1) 4M x 36

    20MB (A)           None         (1) 1M x 36      (1) 4M x 36

    32MB (A)        (4) 4M x 9          None         (1) 4M x 36

    32MB (B)           None         (1) 4M x 36      (1) 4M x 36

    32MB (C)           None         (1) 8M x 36         None

    64MB (A)           None         (1) 8M x 36      (1) 8M x 36

    64MB (B)        (4) 4M x 9      (1) 8M x 36      (1) 4M x 36

  Note: The location of banks 1 & 2 are unidentified.

        DRAM JUMPER CONFIGURATION

        Size                 JP42

         1MB          Pins 1 & 2 closed

         2MB          Pins 1 & 2 closed

       4MB (A)        Pins 1 & 2 closed

       4MB (B)        Pins 1 & 2 closed

       4MB (C)        Pins 1 & 2 closed

         6MB          Pins 1 & 2 closed

       8MB (A)        Pins 1 & 2 closed

       8MB (B)        Pins 1 & 2 closed

       8MB (C)        Pins 1 & 2 closed

        10MB          Pins 1 & 2 closed

      12MB (A)        Pins 1 & 2 closed

      12MB (B)        Pins 1 & 2 closed

      16MB (A)        Pins 1 & 2 closed

      16MB (B)        Pins 1 & 2 closed

      16MB (C)        Pins 1 & 2 closed

      16MB (D)        Pins 2 & 3 closed

      20MB (A)        Pins 1 & 2 closed

      20MB (A)        Pins 1 & 2 closed

      32MB (A)        Pins 1 & 2 closed

      32MB (B)        Pins 1 & 2 closed

      32MB (C)        Pins 1 & 2 closed

      64MB (A)        Pins 1 & 2 closed

      64MB (B)        Pins 2 & 3 closed

                        CACHE CONFIGURATION

      Size            Bank 0           Bank 1             TAG

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

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

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

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

                        CACHE JUMPER CONFIGURATION

     Size          JP10          JP11           JP13            JP35

    128KB          Open         Closed        Pins 1 & 2      Pins 1 & 2
                                               closed          closed

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

    512KB         Closed        Closed        Pins 1 & 2      Pins 2 & 3
                                               closed          closed

      CPU SPEED SELECTION

   Speed      JP38      JP39

   25MHz      Open     Closed

   33MHz     Closed     Open

   40MHz      Open      Open

  50iMHz      Open     Closed

   50MHz     Closed    Closed

  66iMHz     Closed     Open

  75iMHz      Open     Closed

  80iMHz      Open      Open

  100iMHz    Closed     Open

                            CPU TYPE SELECTION

      Type           JP3         JP4        JP5        JP6         JP7

     80486SX         Open       Open        Open      1 & 2       Open

    SL80486SX        Open       Open        Open      1 & 2       Open

  CX486DX (1x)      1 & 2       Open       2 & 3      2 & 3       Open

  CX486DX (2x)      1 & 2       Open       2 & 3      2 & 3       Open

     80486DX        1 & 2       Open       2 & 3      1 & 2       Open

    SL80486DX       1 & 2       Open       2 & 3      1 & 2       Open

    80486DX2        1 & 2       Open       2 & 3      1 & 2       Open

    AM486 3.3v      1 & 2       Open       2 & 3      1 & 2       2 & 3
      (2x)

    AM486 3.3v      1 & 2       Open       2 & 3      1 & 2       1 & 2
      (3x)

    80486DX4        1 & 2       Open       2 & 3      1 & 2       Open

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

      Type          JP8       JP9       JP22        JP24         JP25

     80486SX       2 & 3     Open       1 & 2       Open         Open

    SL80486SX      2 & 3     Open       1 & 2      Closed       Closed

  CX486DX (1x)     1 & 2     1 & 2      1 & 2       Open         Open

  CX486DX (2x)     1 & 2     1 & 2      1 & 2       Open         Open

     80486DX       1 & 2     Open       1 & 2       Open         Open

    SL80486DX      1 & 2     Open       1 & 2      Closed       Closed

    80486DX2       1 & 2     Open       1 & 2       Open         Open

    AM486 3.3v     1 & 2     Open       1 & 2       Open         Open
      (2x)

    AM486 3.3v     1 & 2     Open       1 & 2       Open         Open
      (3x)

    80486DX4       1 & 2     Open       1 & 2      Closed       Closed

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

      Type            JP27            JP36          JP40          JP43

     80486SX          Open         Pins 1 & 2       Open          Open
                                     closed

    SL80486SX         Open         Pins 2 & 3       Open          Open
                                     closed

  CX486DX (1x)      Pins 1 & 2     Pins 1 & 2       Open          Open
                     closed          closed

  CX486DX (2x)      Pins 2 & 3     Pins 1 & 2       Open          Open
                     closed          closed

     80486DX          Open         Pins 1 & 2       Open          Open
                                     closed

    SL80486DX         Open         Pins 2 & 3       Open          Open
                                     closed

    80486DX2          Open         Pins 1 & 2       Open          Open
                                     closed

    AM486 3.3v        Open         Pins 1 & 2       Open          Open
      (2x)                           closed

    AM486 3.3v        Open         Pins 1 & 2       Open          Open
      (3x)                           closed

    80486DX4          Open         Pins 2 & 3      Closed         Open
                                     closed

  CPU VOLTAGE SELECTION

   Voltage        JP1

    3.3v         Open

     5v         Closed

                        VL BUS WAIT STATE SELECTION

               Setting                                JP33

                    0                                Open

                     1                               Closed

                          VL BUS SPEED SELECTION

                 Speed                                 JP34

                 <= 33MHz                             Open

                  >33 MHz                             Closed

