
SOYO COMPUTER CO., LTD.

486PCI

Processor  CX486M7/80486SX/80486DX/80486DX2/80486DX4/Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed      100(internal)MHz
Chip Set   Unidentified
Max.       128MB
Onboard
DRAM
Cache      128/256/512KB
BIOS       Award
Dimensions 254mm x 220mm
I/O        32-bit VESA local bus slots (2), 32-bit PCI bus slots (4), green
Options    PC connector
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  Power LED & keylock       J17       Turbo LED                   J22

  Speaker                   J18       Green PC connector          JP19

  Reset switch              J19       Green PC connector          JP42

  External battery          J20       32-bit VESA local bus    SL1 & SL2
                                      slots

  Turbo switch              J21       32-bit PCI bus slots     PC1 - PC4

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select monochrome          JP3              Open

      Monitor type select color               JP3             Closed

     CMOS memory normal operation            JP5           pins 1 & 2
                                                              closed

      CMOS memory clear                       JP5           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

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

     10MB       (1) 512K x    (1) 1M x 36        NONE           NONE
                    36

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

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

     12MB       (1) 512K x     (1) 512K x    (1) 2M x 36        NONE
                    36             36

     14MB       (1) 512K x    (1) 1M x 36    (1) 2M x 36        NONE
                    36

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

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

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

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

     18MB       (1) 512K x    (1) 2M x 36    (1) 2M x 36        NONE
                    36

     20MB      (1) 1M x 36    (1) 4M x 36        NONE           NONE

     20MB      (1) 1M x 36    (1) 2M x 36    (1) 2M x 36        NONE

     20MB       (1) 512K x     (1) 512K x    (1) 2M x 36     (1) 2M x 36
                    36             36

     22MB       (1) 512K x    (1) 1M x 36    (1) 2M x 36     (1) 2M x 36
                    36

     24MB      (1) 1M x 36    (1) 1M x 36    (1) 4M x 36        NONE

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

     24MB      (1) 1M x 36    (1) 1M x 36    (1) 2M x 36     (1) 2M x 36

     26MB       (1) 512K x    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36
                    36

     28MB      (1) 1M x 36    (1) 1M x 36    (1) 4M x 36     (1) 1M x 36

     28MB      (1) 1M x 36    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

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

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

     32MB      (1) 2M x 36    (1) 2M x 36    (1) 4M x 36        NONE

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

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

     40MB      (1) 1M x 36    (1) 1M x 36    (1) 8M x 36        NONE

     40MB      (1) 1M x 36    (1) 1M x 36    (1) 4M x 36     (1) 4M x 36

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

     48MB      (1) 2M x 36    (1) 2M x 36    (1) 8M x 36        NONE

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     48MB        (1) 2M x 36   (1) 2M x 36    (1) 4M x 36    (1) 4M x 36

     52MB        (1) 1M x 36   (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

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

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

     64MB        (1) 4M x 36   (1) 4M x 36    (1) 8M x 36        NONE

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

     68MB        (1) 1M x 36   (1) 8M x 36    (1) 4M x 36    (1) 4M x 36

     72MB        (1) 1M x 36   (1) 1M x 36    (1) 8M x 36    (1) 8M x 36

     80MB        (1) 2M x 36   (1) 2M x 36    (1) 8M x 36    (1) 8M x 36

     84MB        (1) 1M x 36   (1) 8M x 36    (1) 8M x 36    (1) 4M x 36

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

     96MB        (1) 4M x 36   (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

     100MB       (1) 1M x 36   (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

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

                            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) 16K x 8 or
                                                           (1) 32K x 8

       512KB          (4) 128K x 8          NONE           (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

    Size          JP22           JP24           JP27            JP30

   128KB         Closed          Open           Open         pins 1 & 2
                                                               closed

   256KB         Closed         Closed          Open         pins 2 & 3
                                                               closed

   512KB         Closed         Closed         Closed        pins 1 & 2
                                                               closed

                          CPU TYPE CONFIGURATION

      Type         JP6     JP7    JP8    JP9     JP10     JP11     JP12

     80486SX       Open    2 &    Open   Open    Open     Open     Open
                            3

  CX486M7(sync)     1 &    Open   Open   Open    Open     Open     Open
                    2

  CX486M7(async)    1 &    Open   Open   Open    Open     Open     Open
                    2

     80486DX       Open    2 &    Open   Open    Open     Open     Open
                            3

    SL80486DX      Open    1 &    Open   Open    Open     Open     Closed
                            2

    80486DX2       Open    2 &    Open   Open    Open     Open     Open
                            3

   SL80486DX2      Open    1 &    Open   Open    Open     Open     Closed
                            2

    80486DX4       Open    1 &    Open   Open    Open     Open     Closed
                            2

      P24D          2 &    1 &    Open    2 &   Closed    Closed   Closed
                    3       2             3

      P24T          2 &    1 &    Open    1 &    Open     Open     Closed
                    3       2             2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

      Type          JP13     JP14     JP15     JP16   JP17   JP18   JP20

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

  CX486M7(sync)     Open     Open     Closed   1 &    Open    2 &    1 &
                                                2             3      2, 3
                                                                     & 4

  CX486M7(async)    Open     Open     Closed   1 &     1 &    2 &    1 &
                                                2      2      3      2, 3
                                                                     & 4

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

    SL80486DX      Closed    Closed   Open     Open    1 &    1 &    1 &
                                                       2      2      2, 3
                                                                     & 4

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

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

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

      P24D         Closed    Closed   Open     Open    1 &    1 &    1 &
                                                       2      2      2, 3
                                                                     & 4

      P24T         Closed    Closed   Open     Open    1 &    1 &    1 &
                                                       2      2      2, 3
                                                                     & 4

  Note: Pins designated should be in the closed position.

          CPU SPEED CONFIGURATION

   Speed      JP34       JP36      JP37

   25MHz      Open       Open      Open

   33MHz      Open      Closed    Closed

   40MHz      Open      Closed     Open

  50iMHz      Open       Open      Open

   50MHz      Open       Open     Closed

  66iMHz      Open      Closed    Closed

  75iMHz      Open       Open      Open

  80iMHz      Open      Closed     Open

  100iMHz     Open      Closed    Closed

                      CPU VOLTAGE CONFIGURATION

              Voltage                             JP21

               3.3v                 pins 1 & 2, 4 & 5, 7 & 8 closed

               5.0v                 pins 2 & 3, 5 & 6, 8 & 9 closed

  VESA WAIT STATE CONFIGURATION

   Wait states          JP2

  0 wait states        Open

  1 wait state        Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP1

   <= 33MHz        Open

   > 33MHz        Closed

                 PCI BUS CLOCK CONFIGURATION

        Mode                 JP31                 JP32

    Asynchronous       pins 2 & 3 closed   pins 2 & 3 closed

     Synchronous       pins 1 & 2 closed   pins 1 & 2 closed

