
CHICONY, INC.

CH-471A (VER. 3)

Processor  CX486S/80486SX/SL80486SX/80486SX2/SL80486SX2/UMCU5S/
           CX486DX/AM486DX/80486DX/SL80486DX/CX486DX2/CX486DX2V/
           AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4/P24D/ P24T/CXM9
Processor  20/25/33/40/50(internal)/50/66(internal)/75(internal)/83(internal)/
Speed      100(internal)MHz
Chip Set   SIS
Video Chip None
Set
Maximum    128MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      32/64/128/256/512/1024KB
BIOS       Award
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connectors (2)
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Reset switch                J3       Speaker                     J8

  Green PC connector          J4       External battery           JP19

  Turbo switch                J5       Green PC connector         JP38

  Turbo LED                   J6       Green PC connector         JP39

  Power LED & keylock         J7       32-bit VESA local bus   PC1 - PC3
                                       slots

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Clock down control by STOPCLK           JP6           Pins 1 & 2
      control (80486DX4)                                      closed

      Clock down control by SMOUT0            JP6           Pins 2 & 3
      control (all other CPUs)                                closed

     CMOS memory normal operation            JP7           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP7           Pins 2 & 3
                                                              closed

      Monitor type select color               JP45            Closed

      Monitor type select monochrome          JP45             Open

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2          Bank 3

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

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

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

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

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

     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

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

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

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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

     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) 4M x 36   (1) 4M x 36    (1) 8M x 36        None

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

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

     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) 8M x 36    (1) 8M x 36

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

     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) 8M x 36    (1) 8M 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) 16M x 36       None

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

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

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

      32KB        (4) 8K x 8         None         (1) 8K x 8

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

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

     256KB        (4) 32K x 8     (4) 32K x 8    (1) 16K 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      JP1      JP2      JP3     JP4      JP5      JP14      JP16

   32KB     1 & 2,    2 & 3   1 & 2    1 & 2    1 & 2   1 & 2     1 & 2
            3 & 4

   64KB     2 & 3,    1 & 2   1 & 2    2 & 3    1 & 2   1 & 2     1 & 2
            4 & 5

   128KB    1 & 2,    2 & 3   2 & 3    2 & 3    1 & 2   1 & 2     2 & 3
            3 & 4

   256KB    2 & 3,    1 & 2   2 & 3    2 & 3    2 & 3   1 & 2     2 & 3
            4 & 5

   512KB    1 & 2,    2 & 3   2 & 3    2 & 3    2 & 3   2 & 3     2 & 3
            3 & 4

    1MB     2 & 3,    1 & 2   2 & 3    2 & 3    2 & 3   2 & 3     2 & 3
            4 & 5

  Note: Pins designated should be in the closed position.

                            CPU SPEED SELECTION

     Speed           JP8           JP12          JP13           JP17

     20MHz          Open           Open          Open         Pins 1 & 2
                                                               closed

     25MHz          Open           Open         Closed        Pins 1 & 2
                                                               closed

     33MHz         Closed         Closed        Closed        Pins 1 & 2
                                                               closed

     40MHz          Open          Closed        Closed        Pins 1 & 2
                                                               closed

    50iMHz          Open           Open         Closed        Pins 1 & 2
                                                               closed

     50MHz         Closed          Open          Open         Pins 2 & 3
                                                               closed

    66iMHz         Closed         Closed        Closed        Pins 1 & 2
                                                               closed

    75iMHz          Open           Open         Closed        Pins 1 & 2
                                                               closed

    83iMHz         Closed         Closed        Closed        Pins 1 & 2
                                                               closed

    100iMHz        Closed         Closed        Closed        Pins 1 & 2
                                                               closed

                            CPU TYPE SELECTION

         Type                JP10             JP11              JP18

        CX486S               2 & 3            1 & 2             Open

        80486SX              1 & 2            2 & 3             Open

       SL80486SX             1 & 2            2 & 3             Open

       80486SX2              1 & 2            2 & 3             Open

      SL80486SX2             1 & 2            2 & 3             Open

        UMC U5S              2 & 3            1 & 2         1 & 2, 3 & 4,
                                                               5 & 6

        CX486DX              2 & 3            1 & 2             Open

        AM486DX              1 & 2            2 & 3             Open

        80486DX              1 & 2            2 & 3             Open

       SL80486DX             1 & 2            2 & 3             Open

       CX486DX2              2 & 3            1 & 2             Open

      CX486DX2-V             2 & 3            1 & 2             Open

       AM486DX2              1 & 2            2 & 3             Open

       80486DX2              1 & 2            2 & 3             Open

      SL80486DX2             1 & 2            2 & 3             Open

       AM486DX4              1 & 2            2 & 3             Open

       80486DX4              1 & 2            2 & 3             Open

         P24D                1 & 2            1 & 2             Open

         P24T                1 & 2            1 & 2             Open

         CX M9               2 & 3            1 & 2             Open

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

       Type             JP20                        JP25

      CX486S            Open                        Open

      80486SX           Open                        Open

     SL80486SX          Open            1 & 2, 3 & 4, 9 & 10, 11 & 12

     80486SX2           Open                        Open

    SL80486SX2          Open            1 & 2, 3 & 4, 9 & 10, 11 & 12

      UMC U5S           Open                        Open

      CX486DX           1 & 2                       Open

      AM486DX           1 & 2                       Open

      80486DX           1 & 2                       Open

     SL80486DX          1 & 2           1 & 2, 3 & 4, 9 & 10, 11 & 12

     CX486DX2           1 & 2                       Open

    CX486DX2-V          1 & 2                       Open

     AM486DX2           1 & 2                       Open

     80486DX2           1 & 2                       Open

    SL80486DX2          1 & 2           1 & 2, 3 & 4, 9 & 10, 11 & 12

     AM486DX4           1 & 2                       Open

     80486DX4           1 & 2           1 & 2, 3 & 4, 9 & 10, 11 & 12

       P24D             1 & 2        1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10,
                                          11 & 12, 13 & 14, 15 & 16

       P24T             1 & 2               1 & 2, 3 & 4, 9 & 10

       CX M9            1 & 2        1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10,
                                              11 & 12, 15 & 16

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

         Type                     JP37                      JP41

        CX486S           1 & 2, 3 & 4, 5 & 6, 7 &           2 & 3
                            8, 9 & 10 11 & 12

       80486SX                    Open                      2 & 3

      SL80486SX                   Open                      2 & 3

       80486SX2                   Open                      2 & 3

      SL80486SX2                  Open                      2 & 3

       UMC U5S                    Open                      2 & 3

       CX486DX           1 & 2, 3 & 4, 5 & 6, 7 &       1 & 2, 3 & 4
                           8, 9 & 10, 11 & 12

       AM486DX                    Open                  1 & 2, 3 & 4

       80486DX                    Open                  1 & 2, 3 & 4

      SL80486DX                   Open                  1 & 2, 3 & 4

       CX486DX2          1 & 2, 3 & 4, 5 & 6, 7 &       1 & 2, 3 & 4
                           8, 9 & 10, 11 & 12

      CX486DX2-V         1 & 2, 3 & 4, 5 & 6, 7 &       1 & 2, 3 & 4
                           8, 9 & 10, 11 & 12

       AM486DX2                   Open                  1 & 2, 3 & 4

       80486DX2                   Open                  1 & 2, 3 & 4

      SL80486DX2                  Open                  1 & 2, 3 & 4

                 CPU TYPE SELECTION (CONT)

    Type                JP37                   JP41

  AM486DX4              Open               1 & 2, 3 & 4

  80486DX4              Open               1 & 2, 3 & 4

    P24D                Open               1 & 2, 3 & 4

    P24T                Open               1 & 2, 3 & 4

    CX M9              5 & 6               1 & 2, 3 & 4

  Note: Pins designated should be in the closed position.

  CPU MULTIPLIER SELECTION (DX4 & CX M9 ONLY)

       Multiplier                 JP21

           2x              Pins 2 & 3 closed

          2.5x             Pins 1 & 2 closed

           3x                     Open

                           CPU VOLTAGE SELECTION

         Voltage                   JP26                     JP32

          3.15v             Pins 1 & 2 closed      Pins 1 & 2, 4 & 5, 7 &
                                                          8 closed

          3.3v              Pins 3 & 4 closed      Pins 1 & 2, 4 & 5, 7 &
                                                          8 closed

          3.45v             Pins 5 & 6 closed      Pins 1 & 2, 4 & 5, 7 &
                                                          8 closed

          3.6v              Pins 7 & 8 closed      Pins 1 & 2, 4 & 5, 7 &
                                                          8 closed

           4v               Pins 9 & 10 closed     Pins 1 & 2, 4 & 5, 7 &
                                                          8 closed

           5v                      N/A             Pins 2 & 3, 5 & 6, 8 &
                                                          9 closed

       VL BUS WAIT STATE SELECTION

       Setting               JP44

          0           Pins 1 & 2 closed

          1           Pins 2 & 3 closed

          VL BUS SPEED SELECTION

        Speed                JP47

      <= 33MHz        Pins 1 & 2 closed

       >33 MHz        Pins 2 & 3 closed

