
SOYO COMPUTER CO., LTD.

SY-5TA2, SY-5TA5

Device Type            Mainboard
Processor              Pentium
Processor Speed        75/90/100/120/133/150MHz
Chip Set               Intel
Video Chip Set         None
Maximum Onboard Memory 128MB (EDO supported)
Maximum Video Memory   None
Cache                  256/512KB
BIOS                   Unidentified
Dimensions             254mm x 218mm
I/O Options            32-bit PCI slots (4), green PC connector, floppy
                       drive interface, IDE interfaces (2), parallel port,
                       serial ports (2), VRM connector
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port 1              CN1       Speaker                    J18

  Serial port 2              CN2       Reset switch               J19

  Floppy drive interface     CN3       Turbo LED                  J22

  Parallel port              CN4       Green PC connector         JP15

  IDE interface 2            CN5       IDE interface LED          JP16

  IDE interface 1            CN6       32-bit PCI slots         PC1  PC4

  Power LED & keylock        J17       VRM connector              VRM

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J3           Unidentified
      alter

     Monitor type select EGA/VGA           JP3             Closed

      Monitor type select monochrome        JP3              Open

     Factory configured - do not           JP4          Unidentified
      alter

     Factory configured - do not           JP5          Unidentified
      alter

     Factory configured - do not          JP13             Closed
      alter

     Factory configured - do not          JP14        Pins 1 & 2 closed
      alter

     Factory configured - do not          JP21          Unidentified
      alter

     Factory configured - do not          JP22              Open
      alter

     Factory configured - do not          JP23          Unidentified
      alter

     Factory configured - do not          JP24          Unidentified
      alter

     Factory configured - do not          JP25             Closed
      alter

     Factory configured - do not          JP26             Closed
      alter

     Pipeline address enabled             JP30             Closed

      Pipeline address disabled            JP30              Open

     Cache type select write back         JP31              Open

      Cache type select write              JP31             Closed
      through

     CMOS memory normal operation         JP32              Open

      CMOS memory clear                    JP32             Closed

                SIMM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         None

       4MB        (2) 512K x 36         None

       4MB        (2) 256K x 36    (2) 256K x 36

       6MB        (2) 512K x 36    (2) 256K x 36

            SIMM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1

       8MB         (2) 1M x 36          None

       8MB        (2) 512K x 36    (2) 512K x 36

      10MB         (2) 1M x 36     (2) 256K x 36

      12MB        (2) 512K x 36     (2) 1M x 36

      16MB         (2) 2M x 36          None

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

      18MB         (2) 2M x 36     (2) 256K x 36

      20MB        (2) 512K x 36     (2) 2M x 36

      24MB         (2) 2M x 36      (2) 1M x 36

      32MB         (2) 4M x 36          None

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

      34MB         (2) 4M x 36     (2) 256K x 36

      36MB        (2) 512K x 36     (2) 4M x 36

      40MB         (2) 4M x 36      (2) 1M x 36

      48MB         (2) 2M x 36      (2) 4M x 36

      64MB         (2) 8M x 36          None

      64MB         (2) 4M x 36      (2) 4M x 36

      68MB         (2) 8M x 36     (2) 512K x 36

      72MB         (2) 1M x 36      (2) 8M x 36

      80MB         (2) 8M x 36      (2) 2M x 36

      96MB         (2) 4M x 36      (2) 8M x 36

      128MB        (2) 8M x 36      (2) 8M x 36

  Note: Board accepts EDO memory.

                 CACHE CONFIGURATION

       Size            Bank 0              TAG

      256KB          (8) 32K x 8     (1) 8K/16K x 8

      512KB          (8) 64K x 8       (1) 16K x 8

                        CACHE JUMPER CONFIGURATION

      Size              JP12               JP27               JP28

      256KB           Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

      512KB           Pins 2 & 3        Pins 2 & 3      Pins 2 & 3 closed
                       closed             closed

                        CACHE VOLTAGE CONFIGURATION

         Voltage                   JP1                      JP2

          3.3v                     Open            Pins 1 & 2, 3 & 4, 5 &
                                                          6 closed

          Mixed            Pins 1 & 2, 3 & 4, 5             Open
                                & 6 closed

                            CPU SPEED SELECTION

   CPU     Clock    Multiplier   JP17   JP18     JP19     JP29      JP38
  speed    speed

  75MHz    50MHz      1.5x       1 &    Open     Open     Open      Open
                                  2

  90MHz    60MHz      1.5x       2 &    Closed   Open     Open      Open
                                  3

  100MHz   66MHz      1.5x       2 &    Closed   Closed   Open      Open
                                  3

  120MHz   60MHz       2x        2 &    Closed   Open     Closed    Open
                                  3

  133MHz   66MHz       2x        2 &    Closed   Closed   Closed    Open
                                  3

  150MHz   60MHz      2.5x       2 &    Closed   Open     Closed   Closed
                                  3

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

        Type               J23               J24               J25

          STD            Open              Open              Closed

           VRE            Open             Closed              Open

                         DMA/PIO CHANNEL SELECTION

          Setting                   JP10                    JP11

          PIO mode           Pins 2 & 3 closed       Pins 2 & 3 closed

           DMA mode           Pins 1 & 2 closed       Pins 1 & 2 closed

                            PCI IRQ10 SELECTION

    Setting           JP6           JP7          JP8            JP9

     INT A            Open          Open         Open        Pins 1 & 2
                                                               closed

     INT B            Open          Open         Open        Pins 2 & 3
                                                               closed

     INT C         Pins 1 & 2       Open         Open           Open
                     closed

     INT D         Pins 2 & 3       Open         Open           Open
                     closed

                            PCI IRQ11 SELECTION

    Setting          JP6           JP7             JP8            JP9

     INT A          Open          Open          Pins 1 & 2       Open
                                                 closed

     INT B          Open          Open          Pins 2 & 3       Open
                                                 closed

     INT C          Open        Pins 1 & 2        Open           Open
                                 closed

     INT D          Open        Pins 2 & 3        Open           Open
                                 closed

                           FLASH BIOS SELECTION

          Setting                   JP33                    JP34

            EPROM            Pins 1 & 2 closed       Pins 2 & 3 closed

             Flash            Pins 2 & 3 closed       Pins 1 & 2 closed

