
TYAN COMPUTER CORPORATION

S1680S

Device Type          Mainboard
Processor            Pentium Pro/Pentium II
Processor Speed      150/166/180/200/233/266/300MHz
Chip Set             Intel
Video Chip Set       None
Maximum Onboard      1GB (EDO supported)
Memory
Maximum Video Memory None
Cache                256/512KB (located on Pentium Pro/Pentium II CPU)
BIOS                 AMI, Award
Dimensions           330mm x 218mm
I/O Options          32-bit PCI slots (5), floppy drive interface, green
                     PC connector, IDE interfaces (2), parallel port, PS/2
                     mouse interface, serial ports (2), IR connector, USB
                     connectors (2), ATX power connector
NPU Options          None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Serial port 2            CN1         USB connector 1           J6

  IDE interface 1          CN2         CPU fan power            J39

  IDE interface 2          CN3         Keylock                  J43

  Floppy drive             CN4         Green PC connector  J45/pins 2 & 3
  interface

  Serial port 1            CN5         IDE interface LED    J45/pins 15 &
                                                                 16

  Parallel port            CN6         Power LED            J45/pins 18 &
                                                                 20

  IR connector             CN7         Reset switch         J45/pins 22 &
                                                                 23

  PS/2 mouse                J3         Speaker              J45/pins 24 
  interface                                                      27

  USB connector 2           J5         32-bit PCI slots      PC1  PC5

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J7           Unidentified
      alter

     Factory configured - do not           J8           Unidentified
      alter

     Factory configured - do not           J23          Unidentified
      alter

     Factory configured - do not           J28          Unidentified
      alter

     Factory configured - do not           J29          Unidentified
      alter

     Factory configured - do not           J30          Unidentified
      alter

     Flash BIOS voltage select 5v          J33        Pins 1 & 2 closed

      Flash BIOS voltage select 12v         J33        Pins 2 & 3 closed

     Factory configured - do not           J34          Unidentified
      alter

     CMOS memory normal operation          J36              Open

      CMOS memory clear                     J36             Closed

     Factory configured - do not           J44          Unidentified
      alter

     Factory configured - do not           J46          Unidentified
      alter

     Factory configured - do not           J48          Unidentified
      alter

     Factory configured - do not           J49          Unidentified
      alter

     Factory configured - do not           J50          Unidentified
      alter

     Factory configured - do not           J51          Unidentified
      alter

  Note: The location of the following jumpers are unidentified: J7, J8,
  J28, J29, J30, J34 & J46.

                            SIMM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

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

     16MB        (2) 2M x 36       None           None           None

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

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

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

     32MB        (2) 4M x 36       None           None           None

     32MB        (2) 2M x 36   (2) 2M x 36        None           None

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

     40MB        (2) 4M x 36   (2) 1M x 36        None           None

     48MB        (2) 4M x 36   (2) 2M x 36        None           None

     48MB        (2) 2M x 36   (2) 2M x 36    (2) 2M x 36        None

     64MB        (2) 2M x 36   (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     64MB        (2) 8M x 36       None           None           None

     64MB        (2) 4M x 36   (2) 4M x 36        None           None

     72MB        (2) 8M x 36   (2) 1M x 36        None           None

     80MB        (2) 8M x 36   (2) 2M x 36        None           None

     96MB        (2) 8M x 36   (2) 4M x 36        None           None

     96MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36        None

     128MB       (2) 16M x 36      None           None           None

     128MB       (2) 8M x 36   (2) 8M x 36        None           None

     128MB       (2) 4M x 36   (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

     136MB       (2) 16M x 36  (2) 1M x 36        None           None

     144MB       (2) 16M x 36  (2) 2M x 36        None           None

     152MB       (2) 16M x 36  (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     160MB       (2) 16M x 36  (2) 4M x 36        None           None

     176MB       (2) 16M x 36  (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     192MB       (2) 16M x 36  (2) 8M x 36        None           None

     192MB       (2) 8M x 36   (2) 8M x 36    (2) 8M x 36        None

     224MB       (2) 16M x 36  (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

     256MB       (2) 32M x 36      None           None           None

     256MB       (2) 16M x 36  (2) 16M x 36       None           None

     256MB       (2) 8M x 36   (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

     272MB       (2) 16M x 36  (2) 16M x 36   (2) 1M x 36    (2) 1M x 36

     280MB       (2) 32M x 36  (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

                        SIMM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     288MB       (2) 16M x 36  (2) 16M x 36   (2) 2M x 36    (2) 2M x 36

     304MB       (2) 32M x 36  (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     320MB       (2) 16M x 36  (2) 16M x 36   (2) 4M x 36    (2) 4M x 36

     320MB       (2) 16M x 36  (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

     352MB       (2) 32M x 36  (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

     384MB       (2) 16M x 36  (2) 16M x 36   (2) 16M x 36       None

     448MB       (2) 32M x 36  (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

     512MB       (2) 32M x 36  (2) 32M x 36       None           None

     512MB       (2) 16M x 36  (2) 16M x 36   (2) 16M x 36   (2) 16M x 36

     640MB       (2) 32M x 36  (2) 16M x 36   (2) 16M x 36   (2) 16M x 36

     768MB       (2) 32M x 36  (2) 32M x 36   (2) 32M x 36       None

    1024MB       (2) 32M x 36  (2) 32M x 36   (2) 32M x 36   (2) 32M x 36

  Note: Board accepts EDO memory.

                        SIMM VOLTAGE CONFIGURATION

     Voltage          J17            J18           J19           J20

         3.3v         Open          Open          Open           Open

         5v         Closed        Closed        Closed         Closed

                    SIMM VOLTAGE CONFIGURATION (CONT)

     Voltage          J37            J38           J40           J41

         3.3v        Closed        Closed        Closed         Closed

         5v          Open          Open          Open           Open

                           CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium Pro/Pentium II CPU.

                     CPU SPEED SELECTION (PENTIUM PRO)

    CPU      Clock     Multiplier    J21      J24       J25        J26
  speed      speed

  150MHz     60MHz        2.5x        3 &    Open      Closed     Closed
                                      4

  166MHz     66MHz        2.5x        1 &    Open      Closed     Closed
                                      2

  180MHz     60MHz         3x         3 &   Closed      Open      Closed
                                      4

  200MHz     66MHz         3x         1 &   Closed      Open      Closed
                                      2

  Note: Pins designated should be in the closed position.

                 CPU SPEED SELECTION (PENTIUM PRO, CONT)

  CPU speed     Clock     Multiplier       J27         J31         J32
               speed

   150MHz      60MHz         2.5x        Closed      Closed       Open

   166MHz      66MHz         2.5x        Closed       Open       Closed

   180MHz      60MHz          3x         Closed      Closed       Open

   200MHz      66MHz          3x         Closed       Open       Closed

                     CPU SPEED SELECTION (PENTIUM II)

    CPU      Clock     Multiplier    J21      J24       J25        J26
  speed      speed

  200MHz     66MHz         3x         1 &   Closed      Open      Closed
                                      2

  233MHz     66MHz        3.5x        1 &    Open       Open      Closed
                                      2

  266MHz     66MHz         4x         1 &   Closed     Closed      Open
                                      2

  300MHz     66MHz        4.5x        1 &    Open      Closed      Open
                                      2

  Note: Pins designated should be in the closed position.

                  CPU SPEED SELECTION (PENTIUM II, CONT)

  CPU speed     Clock      Multiplier       J27        J31         J32
                speed

   200MHz       66MHz          3x         Closed       Open      Closed

   233MHz       66MHz         3.5x        Closed       Open      Closed

   266MHz       66MHz          4x         Closed       Open      Closed

   300MHz       66MHz         4.5x        Closed       Open      Closed

