
CHICONY, INC.

CH-471B

Processor  CX486S/80486SX/SL80486SX/SL80486SX2/CX486DX/AM486DX/SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/80486DX4/P24D/
           Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   SIS
Max.       128MB
Onboard
DRAM
Cache      32/64/128/256/512/1024KB
BIOS       Award
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slots (2), floppy drive interface, game port, green PC connector, IDE interfaces (2), parallel port,
Options    serial ports (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Green PC connector          J1       Reset switch               J13

  Floppy drive                J4       Turbo switch               J14
  interface

  Serial port 2               J5       Turbo LED                  J15

  IDE interface (VESA)        J6       Speaker                    J16

  Serial port 1               J7       Green PC connector         J17

  Game interface              J8       Power LED & keylock        J18

  Parallel port               J9       Green PC connector         J19

  IDE interface (ISA)        J10       Voltage connector           P4

  External battery           J11       32-bit VESA local bus   SL1 & SL2
                                       slots

  IDE interface LED          J12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            JP1           pins 1 & 2
                                                              closed

      CMOS memory clear                       JP1           pins 2 & 3
                                                              closed

     Floppy drive interface enabled          JP6           pins 1 & 2
                                                              closed

      Floppy drive interface disabled         JP6           pins 2 & 3
                                                              closed

     IDE interface enabled (ISA)             JP7           pins 1 & 2
                                                              closed

      IDE interface disabled (ISA)            JP7           pins 2 & 3
                                                              closed

     Game port enabled                       JP10          pins 1 & 2
                                                              closed

      Game port disabled                      JP10          pins 2 & 3
                                                              closed

     Floppy drive address range              JP11          pins 2 & 3
      select 3F0 to 3F7                                       closed

      Floppy drive address range              JP11          pins 1 & 2
      select 370 to 377                                       closed

     ISA IDE address range select 170        JP12          pins 1 & 2
                                                              closed

      ISA IDE address range select 1F0        JP12          pins 2 & 3
                                                              closed

     ISA IDE IRQ select IRQ15                JP32          pins 1 & 2
                                                              closed

      ISA IDE IRQ select IRQ14                JP32          pins 2 & 3
                                                              closed

     Parallel port IRQ select IRQ7           JP30          pins 2 & 3
                                                              closed

      Parallel port IRQ select IRQ5           JP30          pins 1 & 2
                                                              closed

     IDE interface enabled (VESA)            JP38          pins 1 & 2
                                                              closed

      IDE interface disabled (VESA)           JP38          pins 2 & 3
                                                              closed

     Factory configured - do not             JP44             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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

      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

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

     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

     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) 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) 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

     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) 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) 2K x 8

      64KB        (4) 8K x 8      (4) 8K x 8      (1) 4K 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     JP21    JP22    JP23    JP24    JP25    JP26    JP27     JP28

  32KB     1 & 2   1 & 2   1 & 2   1 & 2   2 & 3   2 & 3   2 & 3   2 & 3

  64KB     2 & 3   1 & 2   2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   1 & 2

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

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

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

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

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

        Type             JP39          JP42         JP45         JP46

       CX486S          7 & 8, 9 &      Open         Open         Open
                      10, 11 & 12

      80486SX            Open          Open        2 & 3         2 & 3

     SL80486SX         7 & 8, 9 &      Open        1 & 2         2 & 3
                      10, 11 & 12

     SL80486SX2        7 & 8, 9 &      Open        1 & 2         2 & 3
                      10, 11 & 12

      CX486DX          7 & 8, 9 &      Open         Open         Open
                      10, 11 & 12

      AM486DX            Open          Open        2 & 3         2 & 3

     SL80486DX         7 & 8, 9 &      Open        1 & 2         2 & 3
                      10, 11 & 12

      80486DX            Open          Open        2 & 3         2 & 3

      CX486DX2         7 & 8, 9 &      Open         Open         Open
                      10, 11 & 12

      AM486DX2           Open          Open        2 & 3         2 & 3

     SL80486DX2        7 & 8, 9 &      Open        1 & 2         2 & 3
                      10, 11 & 12

      80486DX2           Open          Open        2 & 3         2 & 3

      80486DX4         7 & 8, 9 &      Open        1 & 2         2 & 3
                      10, 11 & 12

        P24D           7 & 8, 9 &      Open         Open         Open
                      10, 11 & 12

        P24T           7 & 8, 9 &      Open         Open         Open
                      10, 11 & 12

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type        JP47        JP48        JP49         JP53        JP54

    CX486S       Open        Open        Open        Closed       2 & 3

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

  SL80486SX      2 & 3       2 & 3       2 & 3       Closed       2 & 3

  SL80486SX2     2 & 3       2 & 3       2 & 3       Closed       2 & 3

   CX486DX       Open        Open        Open        Closed       2 & 3

   AM486DX       2 & 3       2 & 3       2 & 3        Open        2 & 3

                      CPU TYPE CONFIGURATION (CONT)

     Type        JP47        JP48        JP49         JP53        JP54

  SL80486DX      2 & 3       2 & 3       2 & 3       Closed       2 & 3

   80486DX       2 & 3       2 & 3       2 & 3        Open        2 & 3

   CX486DX2      Open        Open        Open        Closed       2 & 3

   AM486DX2      2 & 3       2 & 3       2 & 3        Open        2 & 3

  SL80486DX2     2 & 3       2 & 3       2 & 3       Closed       2 & 3

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

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

     P24D        Open        Open        Open        Closed       2 & 3

     P24T        Open        Open        Open        Closed       2 & 3

  Note: Pins designated should be in the closed position.

                    CPU TYPE CONFIGURATION

        Type                 JP19                 JP20

      Intel/AMD        pins 1 & 2 closed   pins 2 & 3 closed

        Cyrix          pins 2 & 3 closed   pins 1 & 2 closed

   Intel P24D/P24T     pins 1 & 2 closed   pins 1 & 2 closed

                          CPU TYPE CONFIGURATION

           Type                 JP40             JP41           JP55

         80487SX            pins 1 & 2, 3     pins 2 & 3        Open
                             & 4 closed         closed

  80486SX/CX M6/UMC U5S       pins 2 & 3         Open           Open
                               closed

          CX M7             pins 1 & 2, 3     pins 1 & 2       Closed
                             & 4 closed         closed

     Intel/AMD/Cyrix        pins 1 & 2, 3     pins 1 & 2        Open
                             & 4 closed         closed

    CPU SPEED CONFIGURATION

   Speed      JP36      JP37

   25MHz      Open      Open

   33MHz     Closed    Closed

   40MHz      Open     Closed

   50MHz     Closed     Open

  50iMHz      Open      Open

  66iMHz     Closed    Closed

  75iMHz      Open      Open

  100iMHz    Closed    Closed

         CPU SPEED CONFIGURATION

        Speed                JP50

         2x           pins 2 & 3 closed

        2.5x          pins 1 & 2 closed

         3x                  Open

                      CPU VOLTAGE CONFIGURATION

              Voltage                              P3

               3.3v                 pins 1 & 2, 4 & 5, 6 & 7 closed

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

  VESA WAIT STATE CONFIGURATION

   Wait states         JP52

  0 wait states        Open

  1 wait state        Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP51

   <= 33MHz        Open

   > 33MHz        Closed

                  PARLLEL PORT CONFIGURATION

       Address               JP8                  JP9

         378           pins 1 & 2 closed   pins 2 & 3 closed

         278           pins 1 & 2 closed   pins 1 & 2 closed

         3BC           pins 2 & 3 closed   pins 1 & 2 closed

      Disabled         pins 2 & 3 closed   pins 2 & 3 closed

                 SERIAL PORT 1 CONFIGURATION

       Address               JP2                  JP3

         3F8           pins 1 & 2 closed   pins 1 & 2 closed

         2F8           pins 1 & 2 closed   pins 2 & 3 closed

         3E8           pins 2 & 3 closed   pins 1 & 2 closed

      Disabled         pins 2 & 3 closed   pins 2 & 3 closed

                 SERIAL PORT 2 CONFIGURATION

       Address               JP4                  JP5

         2F8           pins 1 & 2 closed   pins 1 & 2 closed

         3F8           pins 1 & 2 closed   pins 2 & 3 closed

         3E8           pins 2 & 3 closed   pins 1 & 2 closed

      Disabled         pins 2 & 3 closed   pins 2 & 3 closed

                       SERIAL PORT IRQ CONFIGURATION

          COM1                   COM2                      JP29

          IRQ3                   IRQ4            pins 1 & 2, 3 & 4 closed

          IRQ4                   IRQ3            pins 1 & 3, 2 & 4 closed

               FLOPPY DRIVE MEDIA CONFIGURATION

       Setting               JP17                 JP18

  All floppy types     pins 1 & 2 closed   pins 1 & 2 closed

     2.88MB only       pins 2 & 3 closed   pins 2 & 3 closed

