
CHAINTECH COMPUTER COMPANY, LTD

486SPM

Processor  80486SX/CX486DX/AM486DX/U5S/80486DX/ODP486SX/CX486DX2/
           CX486DX2V/AM486DX2/AM486DX2/80486DX2/CX486DX4/AM486DX4-NV8T/
           AM486DX4-SV8B/80486DX4/80486DX4(WB)/Pentium Overdrive/

           SL Pentium Overdrive/CXM1SC
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/100(internal)/
Speed      120(internal)MHz
Chip Set   Unidentified
Max.       128MB
Onboard
DRAM
Cache      128/256/512/1024KB
BIOS       Award
Dimensions 220mm x 250mm
I/O        Green PC connector, floppy drive interface, IDE interfaces (2), parallel port,
Options    serial ports (2), 32-bit PCI slots (3)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Serial port 1             CN2        Green PC LED              JP27

  Serial port 2             CN3        Green PC connector        JP29

  Parallel port             CN4        Turbo switch              JP35

  Floppy drive              CN5        Turbo LED                 JP36
  interface

  IDE interface 1           CN6        Speaker                   JP37

  IDE interface 2           CN7        Reset switch              JP44

  External battery          JP12       Power LED & keylock       JP45

  IDE interface LED 1       JP14       32-bit PCI slots       PCI1 - PCI3

  IDE interface LED 2       JP15

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            JP13          pins 1 & 2
                                                              closed

      CMOS memory clear                       JP13          pins 2 & 3
                                                              closed

     PCI-Bus clock select normal             JP21          pins 1 & 2
      speed                                                   closed

      PCI-Bus clock select  speed            JP21          pins 2 & 3
                                                              closed

     Factory configured - do not             JP31          pins 1 & 2
      alter                                                   closed

     Turbo switch select high speed          JP35            Closed

      Turbo switch select low speed           JP35             Open

     Factory configured - do not             JP39          pins 1 & 2
      alter                                                   closed

     Factory configured - do not             JP40          pins 1 & 2
      alter                                                   closed

     Factory configured - do not             JP46             N/A
      alter

     Factory configured - do not             JP47             N/A
      alter

                            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

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

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

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

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

     6MB         (1) 256K x     (1) 256K x    (1) 1M x 36        NONE
                    36             36

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

     8MB         (1) 256K x     (1) 256K x     (1) 512K x    (1) 1M x 36
                    36             36             36

     8MB         (1) 512K x     (1) 512K x    (1) 1M x 36        NONE
                    36             36

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

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

     10MB        (1) 256K x     (1) 256K x    (1) 1M x 36    (1) 1M x 36
                    36             36

     12MB        (1) 512K x     (1) 512K x    (1) 1M x 36    (1) 1M x 36
                    36             36

     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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

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

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

     18MB         (1) 256K x     (1) 256K x    (1) 4M x 36       NONE
                     36             36

     18MB         (1) 512K x    (1) 4M x 36       NONE           NONE
                     36

     20MB         (1) 512K x     (1) 512K x    (1) 4M x 36       NONE
                     36             36

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

     24MB         (1) 512K x     (1) 512K x    (1) 1M x 36   (1) 4M x 36
                     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

     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

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

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

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

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

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

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

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

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

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

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

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

     65MB         (1) 256K x    (1) 16M x 36      NONE           NONE
                     36

     68MB        (1) 1M x 36    (1) 16M x 36      NONE           NONE

     68MB        (1) 1M x 36    (1) 8M x 36    (1) 8M x 36       NONE

     72MB        (1) 1M x 36    (1) 1M x 36     (1) 16M x        NONE
                                                   36

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

     80MB        (1) 4M x 36    (1) 16M x 36      NONE           NONE

     80MB        (1) 4M x 36    (1) 8M x 36    (1) 8M x 36       NONE

     96MB        (1) 4M x 36    (1) 4M x 36     (1) 16M x        NONE
                                                   36

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

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

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

     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) 32K x 8

     256KB        (4) 64K x 8        NONE        (1) 32K x 8

     512KB        (4) 64K x 8     (4) 64K x 8    (1) 32K x 8

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

      1MB        (4) 128K x 8    (4) 128K x 8    (1) 64K x 8

                  CACHE JUMPER CONFIGURATION

  Size     JP17     JP18     JP19     JP20     JP25    JP26

  128KB    1 & 2   2 & 3    2 & 3    1 & 2    1 & 2    1 & 2

  256KB    2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    1 & 2

  256KB    1 & 2   2 & 3    1 & 2    1 & 2    2 & 3    1 & 2

  512KB    2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

  512KB    1 & 2   1 & 2    2 & 3    1 & 2    2 & 3    2 & 3

   1MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       Type            J2         J3         J4         J5          J6

      80486SX        Closed      Open       Open       Open       Closed

      CX486DX         Open      Closed      Open      Closed       Open

      AM486DX         Open      Closed      Open       Open       Closed

        U5S          Closed      Open       Open       Open       Closed

      80486DX         Open      Closed      Open       Open       Closed

     ODP486SX         Open      Closed      Open       Open       Closed

     CX486DX2V        Open      Closed      Open      Closed       Open

     CX486DX2         Open      Closed      Open      Closed       Open

     AM486DX2         Open      Closed      Open       Open       Closed

    AM486DX2-80       Open      Closed      Open       Open       Closed

     80486DX2         Open      Closed      Open       Open       Closed

     CX486DX4         Open      Closed      Open      Closed       Open

   AM486DX4-NV8T      Open      Closed      Open       Open       Closed

   AM486DX4-SV8B      Open       Open      Closed      Open        Open

     80486DX4         Open      Closed      Open       Open       Closed

   80486DX4 (WB)      Open       Open      Closed      Open        Open

      Pentium         Open       Open      Closed      Open        Open
     Overdrive

     SL Pentium       Open       Open      Closed      Open        Open
     Overdrive

      CXM1SC          Open       Open      Closed      Open        Open

                      CPU TYPE CONFIGURATION (CONT)

         Type               J7           JP41        JP42         JP43

       80486SX             Open          Open        1 & 2       1 & 2

       CX486DX             Open         1 & 2        1 & 2       1 & 2

       AM486DX             Open          Open        1 & 2       1 & 2

         U5S               Open          Open        1 & 2       1 & 2

       80486DX             Open          Open        1 & 2       1 & 2

       ODP486SX            Open          Open        1 & 2       2 & 3

      CX486DX2V            Open          1 &2        1 & 2       1 & 2

       CX486DX2            Open          Open        1 & 2       1 & 2

       AM486DX2            Open          Open        1 & 2       1 & 2

     AM486DX2-80           Open          Open        2 & 3       1 & 2

       80486DX2            Open          Open        1 & 2       1 & 2

       CX486DX4            Open         1 & 2        1 & 2       1 & 2

    AM486DX4-NV8T          Open          Open        1 & 2       1 & 2

    AM486DX4-SV8B         Closed         Open        1 & 2       1 & 2

       80486DX4            Open          Open        1 & 2       1 & 2

    80486DX4 (WB)         Closed         Open        1 & 2       1 & 2

  Pentium Overdrive       Closed         Open        1 & 2       1 & 2

      SL Pentium          Closed         Open        1 & 2       2 & 3
      Overdrive

        CXM1SC            Closed         Open        1 & 2       1 & 2

  Note: Pins designated should be in the closed position.

                   CPU SPEED CONFIGURATION

        Speed                JP22                 JP23

        25MHz          pins 2 & 3 closed   pins 2 & 3 closed

        33MHz          pins 1 & 2 closed   pins 1 & 2 closed

        40MHz          pins 1 & 2 closed   pins 2 & 3 closed

       50iMHz          pins 2 & 3 closed   pins 2 & 3 closed

        50MHz          pins 2 & 3 closed   pins 1 & 2 closed

       66iMHz          pins 1 & 2 closed   pins 1 & 2 closed

       75iMHz          pins 2 & 3 closed   pins 2 & 3 closed

       80iMHz          pins 1 & 2 closed   pins 2 & 3 closed

       100iMHz         pins 1 & 2 closed   pins 1 & 2 closed

       120iMHz         pins 1 & 2 closed   pins 2 & 3 closed

                  CPU VOLTAGE CONFIGURATION

       Voltage               JP32                 JP38

        3.3v                 Open          pins 1 & 2 closed

         4v                  Open          pins 2 & 3 closed

         5v                 Closed                Open

                      DMA CONFIGURATION

         DMA                 JP1                  JP2

        DMA 1          pins 1 & 2 closed   pins 1 & 2 closed

        DMA 3          pins 2 & 3 closed   pins 2 & 3 closed

