
PC BRAND

VALUE SERIES 486

Processor       80386DX/80486SX/80487SX/80486DX/80486DX2
Processor Speed 25/33/40/50(internal)MHz
Chip Set        Unidentified
Max. Onboard    32MB
DRAM
Cache           64/128/256/1024KB
BIOS            Unidentified
Dimensions      330mm x 218mm
I/O Options     Parallel port, serial ports (2), VGA port, VGA feature
                connector, floppy drive interface, IDE interface, game
                interface, riser slot
NPU Options     80387DX/3167/4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  VGA port                    CN1      IDE interface               PL6

  Parallel port               CN2      Reset switch                PL9

  Serial port 1               CN3      Turbo LED                  PL12

  Serial port 2               CN4      IDE interface LED          PL14

  Game interface              PL3      VGA feature connector      PL19

  Floppy drive interface      PL5      Riser Card                  SL1

  Note: The location of jumpers PL9, PL12, PL14 are unidentified.

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             JP1              N/A
      alter

     Factory configured - do not             JP2              N/A
      alter

     Factory configured - do not             JP3              N/A
      alter

     Factory configured - do not             JP3              N/A
      alter

     Factory configured - do not             JP4              N/A
      alter

     Factory configured - do not             JP5              N/A
      alter

     Factory configured - do not             JP6              N/A
      alter

     Factory configured - do not             JP7              N/A
      alter

     Factory configured - do not             JP8              N/A
      alter

     Factory configured - do not             JP9              N/A
      alter

     Factory configured - do not             JP10             N/A
      alter

     Factory configured - do not             JP11             N/A
      alter

     Factory configured - do not             JP12             N/A
      alter

     Factory configured - do not             JP13             N/A
      alter

     Factory configured - do not             JP14             N/A
      alter

     Factory configured - do not             JP15             N/A
      alter

     Factory configured - do not             JP16             N/A
      alter

     Factory configured - do not             JP17             N/A
      alter

     Factory configured - do not             JP18             N/A
      alter

     Factory configured - do not             JP19             N/A
      alter

     Factory configured - do not             JP20             N/A
      alter

     Factory configured - do not             JP21             N/A
      alter

     Factory configured - do not             JP22             N/A
      alter

     Factory configured - do not             JP23             N/A
      alter

     Factory configured - do not             JP24             N/A
      alter

     Factory configured - do not             JP25             N/A
      alter

     Factory configured - do not             JP26             N/A
      alter

     Factory configured - do not             JP27             N/A
      alter

     Factory configured - do not             JP28             N/A
      alter

     External speaker enabled                PL20          pins 2 & 3
                                                              closed

      External speaker disabled               PL20          pins 1 & 2
                                                              closed

     System security enabled                  W4             Closed

      System security disabled                 W4              Open

     Game port enabled                       W13              Open

      Game port disabled                      W13             Closed

     Floppy drive interface enabled          W19           pins 1 & 2
                                                              closed

      Floppy drive interface disabled         W19           pins 2 & 3
                                                              closed

     IDE interface enabled                   W20           pins 1 & 2
                                                              closed

      IDE interface disabled                  W20           pins 2 & 3
                                                              closed

     External speaker enabled                W28           pins 2 & 3
                                                              closed

      External speaker disabled               W28           pins 1 & 2
                                                              closed

                    USER CONFIGURABLE SETTINGS (CONT)

                Function                     Jumper          Position

     80486 burst mode select 2-1-1-1         W44              Open

      80486 burst mode select 3-2-2-2         W44             Closed

     Cache wait state select 0 wait          W45             Closed
      states

      Cache wait state select 1 wait          W45              Open
      state

     Parallel port IRQ select IRQ5           W49           pins 2 & 3
                                                              closed

      Parallel port IRQ select IRQ7           W49           pins 1 & 2
                                                              closed

     On board VGA wait state select 0        W55             Closed
      wait states

      On board VGA wait state select 1        W55              Open
      wait state

     Factory configured - do not             W56              N/A
      alter

  Note: The location of jumpers PL 20, W28, W44, & W45 are unidentified.

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

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

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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

      17MB        (4) 256K x 9    (4) 4M x 9

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

      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

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

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

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

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

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

                 CACHE JUMPER CONFIGURATION

   Size       W18       W26       W30       W31       W32

   None      2 & 3     2 & 3     1 & 2     1 & 2     1 & 2

   64KB      1 & 2     1 & 2     1 & 2     1 & 2     1 & 2

  128KB      1 & 2     1 & 2     1 & 2     1 & 2     2 & 3

  128KB      1 & 2     1 & 2     1 & 2     1 & 2     2 & 3

  256KB      1 & 2     1 & 2     1 & 2     1 & 2     2 & 3

   1MB       1 & 2     1 & 2     2 & 3     2 & 3     2 & 3

  Note: Pins designated should be in the closed position.

             CACHE JUMPER CONFIGURATION (CONT)

   Size       W33       W34       W35       W36       W37

   None      Open      1 & 2      Open      Open      Open

   64KB      2 & 3     1 & 2     1 & 2     1 & 2     2 & 3

  128KB      1 & 2     1 & 2      Open     1 & 2     1 & 2

  128KB      Open      1 & 2      Open     2 & 3     1 & 2

  256KB      2 & 3     2 & 3     2 & 3     2 & 3     2 & 3

   1MB       2 & 3     2 & 3     2 & 3     2 & 3     2 & 3

  Note: Pins designated should be in the closed position.

               CACHE JUMPER CONFIGURATION (CONT)

   Size        W38        W39        W40        W41       W42

   None       Open       Open       Open       Open       Open

   64KB       2 & 3      2 & 3      2 & 3      Open       Open

   128KB      1 & 2      1 & 2      1 & 2     Closed      Open

   128KB      1 & 2      1 & 2      1 & 2     Closed     Closed

   256KB      2 & 3      2 & 3      2 & 3      Open       Open

    1MB       2 & 3      2 & 3      2 & 3      Open       Open

  Note: Pins designated should be in the closed position.

                    CACHE JUMPER CONFIGURATION (CONT)

     Size            W43           W46           W68            W69

     None           Open           Open         Open            Open

     64KB          Closed          Open         Open            Open

     128KB          Open           Open         Open         pins 1 & 2
                                                               closed

     128KB         Closed          Open         Open            Open

     256KB         Closed          Open         Open         pins 2 & 3
                                                               closed

      1MB          Closed          Open         Open         pins 2 & 3
                                                               closed

                          CPU TYPE CONFIGURATION

     Type          W48        W54          W57          W60        W61

  80386DX-40      2 & 3      1 & 2       Closed        1 & 2      2 & 3

  80486SX-25      3 & 4      2 & 3        Open         2 & 3      1 & 2

  80486DX-33      3 & 4      2 & 3       Closed        1 & 2      2 & 3

  80486DX2-50     3 & 4      2 & 3       Closed        1 & 2      2 & 3

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

       Type             W62           W63           W64           W65

    80386DX-40       pins 2 & 3      Open        pins 1 & 2     Closed
                      closed                      closed

    80486SX-25       pins 1 & 2     Closed       pins 2 & 3      Open
                      closed                      closed

    80486DX-33       pins 2 & 3     Closed       pins 2 & 3      Open
                      closed                      closed

   80486DX2-50       pins 2 & 3     Closed       pins 2 & 3      Open
                      closed                      closed

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

       Type            W66           W67           W70           W71

    80386DX-40         Open         Open        pins 2 & 3    pins 2 & 3
                                                 closed         closed

    80486SX-25        Closed       Closed       pins 1 & 2    pins 1 & 2
                                                 closed         closed

    80486DX-33        Closed       Closed       pins 1 & 2    pins 1 & 2
                                                 closed         closed

   80486DX2-50        Closed       Closed       pins 1 & 2    pins 1 & 2
                                                 closed         closed

  CPU SPEED CONFIGURATION

    Speed          W47

      1x          Closed

      2x           Open

                 PARALLEL PORT CONFIGURATION

       Setting               W21                  W29

    LPT1 enabled       pins 2 & 3 closed   pins 1 & 2 closed

    LPT2 disabled      pins 1 & 2 closed   pins 2 & 3 closed

  Note: The location of W29 is unidentified.

                 SERIAL PORT 1 CONFIGURATION

       Setting               W17                  W22

    COM1 enabled       pins 1 & 2 closed   pins 1 & 2 closed

    COM1 disabled      pins 2 & 3 closed   pins 2 & 3 closed

                 SERIAL PORT 2 CONFIGURATION

       Setting               W15                  W16

    COM2 enabled       pins 1 & 2 closed   pins 1 & 2 closed

    COM2 disabled      pins 2 & 3 closed   pins 2 & 3 closed

    ON BOARD VGA CONFIGURATION

  Setting       W14        W50

  Enabled      Open       Closed

  Disabled    Closed       Open

              VRAM CONFIGURATION

      Size          Bank 0          Bank 1

     512KB        (2) 256K x 4       NONE

      1MB         (2) 256K x 4   (2) 256K x 4

  VRAM JUMPER CONFIGURATION

   Size      W58       W59

  512KB     Closed    Open

   1MB       Open     Open

          MISCELLANEOUS TECHNICAL NOTE

  Note: The location of pin 1 is unidentified.

