
BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB-1425/1433/1440/1450UIV (VER. 2)

Processor  CX486M6/UMC486/80486SX/CX486M7/AM486DX/SL80486DX/80486DX/
           AM486DX2/AM486DXL/SL80486DX2/80486DX2/80486DX4/P24D/Pentium
           Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Unidentified
Max.       64MB
Onboard
DRAM
Cache      64/128/256KB
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

  External battery        JP8         Turbo switch          JP15 (pins 14
                                                               - 16)

  Speaker            JP15 (pins 1 -   +5v ground            JP15 (pins 17
                          4)                                   - 18)

  Power LED &        JP15 (pins 5 -   Green PC connector        JP24
  keylock                 9)

  Turbo LED          JP15 (pins 10    Green PC connector        JP25
                         - 11)

  Reset switch       JP15 (pins 12    32-bit VESA local      SL1 - SL3
                         - 13)        bus slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             JP8           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP8           pins 3 & 4
                                                              closed

      Battery type select external             JP8            Closed

     Factory configured - do not alter       JP31             Open

     Factory configured - do not alter       JP32             Open

     VESA bus clock type select              JP36           pins 1 & 2
      synchronous                                             closed

      VESA bus clock type select              JP36           pins 2 & 3
      asynchronous                                            closed

                        DRAM CONFIGURATION

      Size           Bank 0/2         Bank 1/3         Bank 2

       1MB        (1) 256K x 36         NONE            NONE

       1MB             NONE        (1) 256K x 36        NONE

       1MB             NONE             NONE        (4) 256K x 9

       2MB        (1) 256K x 36         NONE        (4) 256K x 9

       2MB             NONE        (1) 256K x 36    (4) 256K x 9

       2MB        (1) 256K x 36    (1) 256K x 36        NONE

       2MB        (1) 512K x 36         NONE            NONE

       2MB             NONE        (1) 512K x 36        NONE

       3MB        (1) 256K x 36    (1) 256K x 36    (4) 256K x 9

       3MB             NONE        (1) 512K x 36    (4) 256K x 9

       3MB        (1) 256K x 36    (1) 512K x 36    (4) 256K x 9

       3MB        (1) 512K x 36    (1) 256K x 36        NONE

       4MB        (1) 256K x 36    (1) 512K x 36    (4) 256K x 9

       4MB             NONE             NONE         (4) 1M x 9

       4MB        (1) 512K x 36    (1) 512K x 36        NONE

       4MB         (1) 1M x 36          NONE            NONE

       4MB             NONE         (1) 1M x 36         NONE

       5MB         (1) 1M x 36          NONE        (4) 256K x 9

       5MB             NONE         (1) 1M x 36     (4) 256K x 9

       5MB        (1) 256K x 36         NONE         (4) 1M x 9

       5MB             NONE        (1) 256K x 36     (4) 1M x 9

       5MB        (1) 256K x 36     (1) 1M x 36         NONE

       5MB         (1) 1M x 36     (1) 256K x 36        NONE

       6MB             NONE        (1) 512K x 36     (4) 1M x 9

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

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

       7MB         (1) 1M x 36     (1) 512K x 36    (4) 256K x 9

       7MB        (1) 256K x 36    (1) 512K x 36     (4) 1M x 9

       8MB         (1) 1M x 36          NONE         (4) 1M x 9

       8MB             NONE         (1) 1M x 36      (4) 1M x 9

       8MB         (1) 1M x 36      (1) 1M x 36         NONE

       8MB         (1) 2M x 36          NONE            NONE

       8MB             NONE         (1) 2M x 36         NONE

       9MB         (1) 1M x 36      (1) 1M x 36     (4) 256K x 9

                    DRAM CONFIGURATION (CONT)

      Size           Bank 0/2         Bank 1/3         Bank 2

       9MB         (1) 1M x 36     (1) 256K x 36     (4) 1M x 9

       9MB        (1) 256K x 36     (1) 1M x 36      (4) 1M x 9

      10MB         (1) 1M x 36     (1) 512K x 36     (4) 1M x 9

      12MB         (1) 1M x 36      (1) 1M x 36      (4) 1M x 9

      12MB             NONE         (1) 2M x 36      (4) 4M x 9

      12MB         (1) 1M x 36      (1) 2M x 36         NONE

      12MB         (1) 2M x 36      (1) 1M x 36         NONE

      16MB             NONE             NONE         (4) 4M x 9

      16MB         (1) 4M x 36          NONE            NONE

      16MB             NONE         (1) 4M x 36         NONE

      17MB         (1) 4M x 36          NONE        (4) 256K x 9

      17MB             NONE         (1) 4M x 36     (4) 256K x 9

      17MB        (1) 256K x 36         NONE         (4) 4M x 9

      17MB             NONE        (1) 256K x 36     (4) 4M x 9

      18MB        (1) 256K x 36     (1) 4M x 36     (4) 256K x 9

      18MB         (1) 4M x 36     (1) 256K x 36    (4) 256K x 9

      19MB         (1) 4M x 36      (1) 2M x 36     (4) 256K x 9

      20MB         (1) 4M x 36      (1) 1M x 36      (4) 1M x 9

      20MB             NONE             NONE         (4) 1M x 9

      20MB         (1) 1M x 36      (1) 4M x 36      (4) 4M x 9

      20MB             NONE             NONE         (4) 4M x 9

      21MB         (1) 1M x 36      (1) 4M x 36     (4) 256K x 9

      21MB         (1) 4M x 36      (1) 1M x 36     (4) 256K x 9

      24MB         (1) 1M x 36      (1) 4M x 36      (4) 1M x 9

      24MB         (1) 4M x 36      (1) 1M x 36      (4) 1M x 9

      32MB         (1) 4M x 36          NONE         (4) 4M x 9

      32MB             NONE         (1) 4M x 36      (4) 4M x 9

      32MB         (1) 4M x 36      (1) 4M x 36         NONE

      32MB         (1) 8M x 36          NONE            NONE

      32MB             NONE         (1) 8M x 36         NONE

      33MB         (1) 8M x 36          NONE        (4) 256K x 9

      33MB             NONE         (1) 8M x 36     (4) 256K x 9

      33MB         (1) 4M x 36      (1) 4M x 36     (4) 256K x 9

      33MB         (1) 4M x 36     (1) 256K x 36     (4) 4M x 9

      33MB        (1) 256K x 36     (1) 4M x 36      (4) 4M x 9

      34MB         (1) 4M x 36     (1) 512K x 36     (4) 4M x 9

      36MB         (1) 4M x 36      (1) 1M x 36      (4) 4M x 9

      36MB         (1) 1M x 36      (1) 4M x 36      (4) 4M x 9

      36MB             NONE         (1) 8M x 36      (4) 1M x 9

      36MB         (1) 4M x 36      (1) 4M x 36      (4) 1M x 9

      48MB         (1) 4M x 36      (1) 4M x 36      (4) 4M x 9

      48MB             NONE         (1) 8M x 36      (4) 4M x 9

      48MB         (1) 4M x 36      (1) 8M x 36         NONE

      48MB         (1) 8M x 36      (1) 4M x 36         NONE

      64MB         (1) 8M x 36      (1) 8M x 36         NONE

                    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

   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

                        CACHE JUMPER CONFIGURATION

    Size         JP7             JP9             JP10            JP33

    64KB         Open           Open          pins 2 & 3         Open
                                                closed

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

  256KB (A)     Closed        pins 2 & 3      pins 2 & 3        Closed
                               closed           closed

  256KB (B)     Closed      pins 1 & 2, 3     pins 1 & 2        Closed
                             & 4 closed         closed

                          CPU TYPE CONFIGURATION

         Type                JP11             JP12              JP13

        CX486M6          1 & 2, 3 & 4,    1 & 2, 3 & 4,        2 & 3
                             5 & 6            5 & 6

        UMC486               2 & 3            2 & 3            2 & 3

        80486SX              Open             2 & 3            2 & 3

        CX486M7          1 & 2, 3 & 4,    1 & 2, 3 & 4,     1 & 2, 3 & 4
                             5 & 6            5 & 6

       AMD486DXL             2 & 3            2 & 3         1 & 2, 3 & 4

       SL80486DX             1 & 2            1 & 2         1 & 2, 3 & 4

      SL80486DX2             1 & 2            1 & 2         1 & 2, 3 & 4

        80486DX              Open             2 & 3         1 & 2, 3 & 4

       80486DX2              Open             2 & 3         1 & 2, 3 & 4

       80486DX4              1 & 2            1 & 2         1 & 2, 3 & 4

         P24D            1 & 2, 4 & 5     1 & 2, 4 & 5      1 & 2, 3 & 4

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

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

       Type            JP17          JP18         JP19          JP35

      CX486M6          Open       2 & 3, 4 &   2 & 3, 4 &       Open
                                      5            5

      UMC486           3 & 4        1 & 2         Open         Closed

      80486SX          Open          Open         Open         Closed

      CX486M7          1 & 2      2 & 3, 4 &     2 & 3          Open
                                      5

     AMD486DXL       1 & 2, 3 &     1 & 2         Open         Closed
                         4

     SL80486DX         1 & 2        5 & 6      1 & 2, 3 &       Open
                                                   4

    SL80486DX2         1 & 2        5 & 6      1 & 2, 3 &       Open
                                                   4

      80486DX          1 & 2         Open         Open         Closed

     80486DX2          1 & 2         Open         Open         Closed

     80486DX4          1 & 2        5 & 6      1 & 2, 3 &       Open
                                                   4

       P24D            1 & 2      3 & 4, 5 &   1 & 2, 3 &       Open
                                      6            4

      Pentium          2 & 3        5 & 6      1 & 2, 3 &       Open
     Overdrive                                     4

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

          Type                     JP20                     JP23

         All CPU                   Open                     Open

  AM80486DX2-66/80 only           Closed                   Closed

          CPU SPEED CONFIGURATION

   Speed      JP4        JP5        JP6

   25MHz      Open       Open     Closed

   33MHz     Closed     Closed    Closed

   40MHz      Open      Closed    Closed

  50iMHz      Open       Open     Closed

   50MHz     Closed      Open      Open

  66iMHz     Closed     Closed    Closed

  75iMHz      Open       Open     Closed

  100iMHz    Closed     Closed    Closed

                         CPU VOLTAGE CONFIGURATION

     Voltage             JP14               JP16               JP27

      3.45v            pins 1 & 2        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

        5v             pins 2 & 3        pins 2 & 3         pins 2 & 3
                        closed             closed             closed

  VESA WAIT STATE CONFIGURATION

   Wait states         JP22

  0 wait states        Open

  1 wait state        Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP21

   <= 33MHz        Open

   > 33MHz        Closed

