
BIOSTAR MICROTECH INTERNATIONAL, INC.

MB-1425UIV, MB-1433UIV, MB-1440UIV, MB-1450UIV (VER. 01)

Processor  CX486SXM6/80486SX/CX486M7/UMC486/AM486DXL/80486DX/
           SL80486DX/80486DX/80486DX2/80486DX4/P24D/P24T
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Unidentified
Video Chip None
Set
Maximum    64MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      64/128/256KB
BIOS       AMI/Award
Dimensions 250mm x 220mm
I/O        32-bit VESA local bus slots (3)
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose              Location       Purpose                 Location

  External battery        JP8         Turbo switch         JP15 pins 14 &
                                                                 15

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

  Power LED &        JP15 pins 5 -    Green PC LED              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                    Label           Position

      Battery type select external          JP8             Closed

      CMOS memory normal operation          JP8        Pins 2 & 3 closed

      CMOS memory clear                     JP8        Pins 3 & 4 closed

      Jumper information unavailable       JP31          Unidentified

      Jumper information unavailable       JP32          Unidentified

                        DRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

       1MB             None             None        (4) 256K x 9

       1MB        (1) 256K x 36         None            None

       1MB             None        (1) 256K x 36        None

       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        None

       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

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

       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

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

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

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

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

      20MB             None         (1) 1M x 36      (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

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

      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 SPEED SELECTION

   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 TYPE SELECTION

         Type               JP11              JP12             JP13

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

       80486SX              Open             2 & 3             2 & 3

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

        UMC486              2 & 3            2 & 3             2 & 3

       AM486DXL             2 & 3            2 & 3         1 & 2, 3 & 4

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

      SL80486DX             1 & 2            1 & 2         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

         P24T               1 & 2            1 & 2         1 & 2, 3 & 4

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

      Type           JP17          JP18          JP19           JP35

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

    80486SX          Open          Open          Open          Closed

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

     UMC486         3 & 4          1 & 2         Open          Closed

    AM486DXL      1 & 2, 3 &       1 & 2         Open          Closed
                      4

    80486DX         1 & 2          Open          Open          Closed

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

    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

      P24T          2 & 3          5 & 6       1 & 2, 3 &       Open
                                                   4

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

     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

  VL BUS WAIT STATE SELECTION

    Setting           JP22

       0              Open

       1             Closed

  VL BUS SPEED SELECTION

   Setting        JP21

  <= 33MHz        Open

   >33 MHz       Closed

