
TYAN COMPUTER CORPORATION

S1686S

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           305mm x 244mm
I/O Options          32-bit PCI slots (5), floppy drive interface, green
                     PC connector, IDE interfaces (2), parallel port, PS/2
                     mouse port, serial ports (2), IR connectors (2), USB
                     connectors (2), ATX power connector
NPU Options          None

[Image]

                                CONNECTIONS

  Purpose               Location       Purpose                Location

  ATX power                ATX         USB connector 2          J22A
  connector

  Serial port 2            CN1         CPU 2 fan power          J23

  Serial port 1            CN2         Soft off power      J29/pins 1 & 2
                                       supply

  Parallel port            CN3         Green PC connector  J29/pins 3 & 4

  Floppy drive             CN5         IR connector         J29/pins 8 -
  interface                                                      10

  IDE interface 1          CN6         IDE interface LED    J29/pins 15 &
                                                                 16

  IDE interface 2          CN7         Power LED            J29/pins 18 -
                                                                 20

  IR connector             IR2         Reset switch         J29/pins 22 &
                                                                 23

  PS/2 mouse port          J18         Speaker              J29/pins 24 -
                                                                 27

  Chassis fan power        J19         Wake on LAN              JP1
                                       connector

  USB connector 1          J22         32-bit PCI slots      PC1  PC5

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            J44              Open

      CMOS memory clear                       J44             Closed

                           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

                        SIMM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     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

     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          J13            J14           J15           J16

         3.3v        Closed        Closed         Open           Open

         5v          Open          Open         Closed         Closed

                    SIMM VOLTAGE CONFIGURATION (CONT)

     Voltage          J24            J25           J26           J27

         3.3v        Closed        Closed         Open           Open

         5v          Open          Open         Closed         Closed

                           CACHE CONFIGURATION

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

                     CPU SPEED SELECTION (PENTIUM PRO)

    CPU      Clock    Multiplier     J11       J12       J31        J32
  speed     speed

  150MHz    60MHz        2.5x        Open     Closed     Open     Closed

  166MHz    66MHz        2.5x       Closed     Open      Open     Closed

  180MHz    60MHz         3x         Open     Closed    Closed     Open

  200MHz    66MHz         3x        Closed     Open     Closed     Open

                 CPU SPEED SELECTION (PENTIUM PRO, CONT)

  CPU speed      Clock     Multiplier       J33          J34        J37
                speed

   150MHz       60MHz         2.5x         Closed       Closed     3 & 4

   166MHz       66MHz         2.5x         Closed       Closed     1 & 2

   180MHz       60MHz          3x          Closed       Closed     3 & 4

   200MHz       66MHz          3x          Closed       Closed     1 & 2

  Note: Pins designated should be in the closed position.

                     CPU SPEED SELECTION (PENTIUM II)

    CPU      Clock    Multiplier      J11      J12       J31       J32
  speed      speed

  200MHz     66MHz        3x         Closed    Open    Closed      Open

  233MHz     66MHz       3.5x        Closed    Open     Open       Open

  266MHz     66MHz        4x         Closed    Open    Closed     Closed

  300MHz     66MHz       4.5x        Closed    Open     Open      Closed

                  CPU SPEED SELECTION (PENTIUM II, CONT)

  CPU speed      Clock     Multiplier       J33          J34        J37
                speed

   200MHz       66MHz          3x          Closed       Closed     1 & 2

   233MHz       66MHz         3.5x         Closed       Closed     1 & 2

   266MHz       66MHz          4x           Open        Closed     1 & 2

   300MHz       66MHz         4.5x          Open        Closed     1 & 2

  Note: Pins designated should be in the closed position.

                         SERIAL PORT SELECTION

        Setting                   J30                     J36

  Used as serial port      Pins 1 & 2 closed       Pins 1 & 2 closed

  Used as IR connector     Pins 2 & 3 closed       Pins 2 & 3 closed

                      LM78 IRQ SELECTION

         IRQ                 J49                  J50

          5                  Open          Pins 1 & 2 closed

          7                  Open          Pins 2 & 3 closed

          9            Pins 1 & 2 closed          Open

         11            Pins 2 & 3 closed          Open

