
CSS LABORATORIES, INC.

PREFERRED 462 PCI/VL ESP, MB-4862

Processor   80486SX/80487SX/CX486M7/80486DX/80486DX2/80486DX4/ Pentium
            Overdrive
Processor   8/16/25/33/40/50(internal)/50/66(internal)100(internal)MHz
Speed
Chip Set    OPTI
Max.        128MB
Onboard
DRAM
Cache       64/128/256KB
BIOS        Award
Dimensions  330mm x 218mm
I/O Options 32-bit VESA local bus slots (2), 32-bit PCI slots (3)
NPU Options None

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose               Location

  Power LED & keylock       JP17        Turbo switch        JP48 pins 3 &
                                                                 4

  IDE interface LED         JP45        External battery        JP49

  Speaker                   JP46        32-bit PCI slots     PC1 - PC3

  Front panel               JP47        32-bit VESA local    SL1 & SL2
  connector                             bus slots

  Reset switch          JP48 pins 1 &
                             2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter        J10              N/A

     Factory configured - do not alter        JP7              N/A

     Local bus type select synchronous        JP9           pins 1 & 2
                                                              closed

      Local bus type select                    JP9           pins 2 & 3
      asynchronous                                            closed

      PCI bus type select synchronous         JP11           pins 2 & 3
                                                              closed

      PCI bus type select asynchronous        JP11           pins 1 & 2
                                                              closed

     Factory configured - do not alter       JP12              N/A

     Factory configured - do not alter       JP13              N/A

     Factory configured - do not alter       JP19              N/A

     Factory configured - do not alter       JP20              N/A

     Factory configured - do not alter       JP23              N/A

     Factory configured - do not alter       JP26              N/A

     Factory configured - do not alter       JP27              N/A

     Factory configured - do not alter       JP40              N/A

     Factory configured - do not alter       JP90              N/A

     Factory configured - do not alter      JP1106             N/A

     Factory configured - do not alter      JP1108             N/A

     Factory configured - do not alter      JP1109             N/A

     Factory configured - do not alter      JP1111             N/A

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

     2MB         (1) 512K x       NONE           NONE           NONE
                    36

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

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

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

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

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

     8MB         (1) 512K x    (1) 512K x     (1) 512K x    (1) 512K x 36
                    36             36             36

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

     8MB        (1) 2M x 36       NONE           NONE           NONE

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

     16MB       (1) 1M x 36   (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     16MB       (1) 2M x 36   (1) 2M x 36        NONE           NONE

     16MB       (1) 4M x 36       NONE           NONE           NONE

     24MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36        NONE

     32MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

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

     32MB       (1) 8M x 36       NONE           NONE           NONE

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

     64MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

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

                        DRAM CONFIGURATION (CON'T)

      Size          Bank 0        Bank 1         Bank 2         Bank 3

      64MB         (1) 16M x       NONE           NONE           NONE
                      36

      96MB        (1) 8M x 36   (1) 8M x 36    (1) 8M x 36       NONE

     128MB        (1) 8M x 36   (1) 8M x 36    (1) 8M x 36   (1) 8M x 36

     128MB         (1) 16M x     (1) 16M x        NONE           NONE
                      36            36

                            CACHE CONFIGURATION

       Size              Bank 0            Bank 1              TAG

       64KB            (4) 8K x 8        (4) 8K x 8        (1) 8K x 8 or
                                                           (1) 32K x 8

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

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

  Note: The orientation of Bank 0 & 1 is unidentified.

                        CACHE JUMPER CONFIGURATION

     Size          jp24          jp29           JP32            JP33

     64KB          Open          Open         pins 2 & 3      pins 2 & 3
                                               closed          closed

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

    256KB         Closed        Closed        pins 2 & 3      pins 2 & 3
                                               closed          closed

                          CPU TYPE CONFIGURATION

    Type       JP17        JP28       JP34      JP37     JP38      JP39

  80486SX       N/A        Open       Open      N/A       N/A      1 & 2

  80487SX       N/A        Open      1 & 2     2 & 3     1 & 2     1 & 2

  CX486M7       N/A       Closed     2 & 3      N/A      2 & 3     2 & 3

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

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

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

    P24T        N/A        Open       N/A       N/A       N/A      2 & 3

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CON'T)

     Type          JP41       JP43       JP44       JP1101       JP1102

    80486SX        N/A         N/A      2 & 3       Closed       Closed

    80487SX        N/A         N/A      1 & 2,      Closed       Closed
                                        3 & 4

    CX486M7        N/A        2 & 4      N/A         Open         Open

    80486DX       Closed       N/A      1 & 2,      Closed       Closed
                                        3 & 4

   80486DX2       Closed       N/A      1 & 2,      Closed       Closed
                                        3 & 4

   80486DX4       Closed       N/A      1 & 2,       Open         Open
                                        3 & 4

     P24T          N/A         N/A       N/A        Closed       Closed

  Note: Pins designated should be in the closed position.

                       CPU SPEED CONFIGURATION

               Speed                              JP35

               8MHz                               Open

               16MHz                       pins 3 & 4 closed

               25MHz                       pins 1 & 2 closed

               33MHz                    pins 1 & 2, 5 & 6 closed

               40MHz                    pins 1 & 2, 3 & 4 closed

              50iMHz                       pins 1 & 2 closed

               50MHz                pins 1 & 2, 3 & 4, 5 & 6 closed

              66iMHz                    pins 1 & 2, 5 & 6 closed

              100iMHz                   pins 1 & 2, 5 & 6 closed

         CPU SPEED CONFIGURATION (CYRIX ONLY)

          Setting                    JP1110

  Internal clock doubled             Closed

  Internal clock standard             Open

  VL BUS WAIT STATE CONFIGURATION

   Wait states           JP21

  0 wait states          Open

   1 wait state         Closed

                  VL BUS SPEED CONFIGURATION

      CPU speed              JP22                JP31

      <= 33MHz               Open          pins 1 & 2 closed

       > 33MHz         pins 1 & 2 closed         Open

                         FLASH BIOS CONFIGURATION

           Setting                    JP16                  JP1107

            Disabled           pins 2 & 3 closed      pins 1 & 2 closed

            Enabled            pins 1 & 2 closed      pins 2 & 3 closed

