
MECER CORPORATION

B810C (REV. B)

Processor        80386DX/CX486M6/80486SX/80486DX/80486DX2
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         Unidentified
Max. Onboard DRAM128MB
Cache            128/256KB
BIOS             AMI
Dimensions       254mm x 218mm
I/O Options      None
NPU Options      80387DX

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose               Location

  Auxiliary keyboard        JP1         Turbo LED          JP27 pins 11 -
  connector                                                      12

  External battery          JP12        Turbo switch       JP27 pins 16 -
                                                                 17

  Power LED & keylock   JP27 pins 1 -   Reset switch       JP27 pins 19 -
                             5                                   20

  Speaker               JP27 pins 7 -
                             10

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select monochrome          JP10          pins 1 & 2
                                                              closed

      Monitor type select color               JP10          pins 2 & 3
                                                              closed

     Factory configured - do not             JP17             N/A
      alter

     Factory configured - do not             JP18             N/A
      alter

     Factory configured - do not             JP21             N/A
      alter

     Factory configured - do not             JP22             N/A
      alter

     Factory configured - do not             JP33          pins 1 & 2
      alter                                                   closed

     Factory configured - do not             JP34          pins 2 & 3
      alter                                                   closed

              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

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

      16MB        (4) 4M x 9         NONE

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

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

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

      65MB        (4) 256K x 9   (4) 16M x 9

      68MB        (4) 1M x 9     (4) 16M x 9

      80MB        (4) 4M x 9     (4) 16M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

                    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

                  CACHE JUMPER CONFIGURATION

        Size                 JP24                 JP25

        128KB                Open          pins 2 & 3 closed

        256KB               Closed         pins 1 & 2 closed

                          CPU TYPE CONFIGURATION

      Type          JP2      JP3      JP4      JP11     JP14       JP15

     80386DX       2 & 3    1 & 2    2 & 3    1 & 2     1 & 2     1 & 2

   CX486M6-33      2 & 3    2 & 3    1 & 2    1 & 2     2 & 3      Open

   CX486M6-40      2 & 3    2 & 3    1 & 2    2 & 3     2 & 3      Open

    CX486M6-33     2 & 3    2 & 3    1 & 2    1 & 2     2 & 3     1 & 2
      (C6)

    CX486M6-40     2 & 3    2 & 3    1 & 2    2 & 3     2 & 3     1 & 2
      (C6)

     80486SX       1 & 2    2 & 3    2 & 3    1 & 2     2 & 3      Open

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

   80486DX-40      1 & 2    2 & 3    2 & 3    2 & 3     2 & 3     1 & 2

   80486DX-50      1 & 2    2 & 3    2 & 3    1 & 2     2 & 3     1 & 2

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

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

     Type      JP16    JP19   JP28      JP29     JP30     JP31      JP32

   80386DX      2 &    2 &    Closed    Open     Open     Closed   Closed
                3       3

  CX486M6-33    1 &    2 &    Open     Closed   Closed    Open      Open
                2       3

  CX486M6-40    1 &    1 &    Open     Closed   Closed    Open      Open
                2       2

  CX486M6-33    2 &    2 &    Open      Open     Open     Closed   Closed
     (C6)       3       3

  CX486M6-40    2 &    1 &    Open      Open     Open     Closed   Closed
     (C6)       3       2

   80486SX      1 &    2 &    Open      Open     Open     Closed   Closed
                2       3

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

  80486DX-40    2 &    1 &    Open      Open     Open     Closed   Closed
                3       2

  80486DX-50    2 &    2 &    Open      Open     Open     Closed   Closed
                3       3

   80486DX2     2 &    2 &    Open      Open     Open     Closed   Closed
                3       3

  Note: Pins designated should be in the closed position.

                CPU SPEED CONFIGURATION

           Speed                        J1

           25MHz                 pins 3 & 4 closed

           33MHz                 pins 1 & 2 closed

       40Mhz (80386)             pins 6 & 8 closed

       40Mhz (80486)         pins 1 & 2, 3 & 4 closed

           50iMHz                pins 3 & 4 closed

           50MHz                 pins 3 & 4 closed

           66iMHz                pins 1 & 2 closed

