
SOYO COMPUTER CO., LTD.

SY-30 A/B/C

Processor      CX486S/AM486SX/80486SX/SL80486SX/CX486DX/AM486DX/
               80486DX/SL80486DX/AM486DX2/80486DX2/SL80486DX2/
               80486DX4/P24D/P24T
Processor Speed25/33/40/50(internal)/50/66(internal)MHz
Chip Set       Unidentified
Video Chip Set None
Maximum Onboard128MB
Memory
Maximum Video  None
Memory
Cache          256/512/1024KB
BIOS           Award
Dimensions     254mm x 218mm
I/O Options    32-bit VESA local bus slots (2), 32-bit PCI slots (4),
               green PC connector
NPU Options    None

[Image]

                                CONNECTIONS

  Purpose              Location    Purpose                      Location

  Power LED &            J17       Green PC connector             JP6
  keylock                          (SYNCEN)

  Speaker                J18       Green PC connector             JP7
                                   (HSYNCH)

  Reset switch           J19       Green PC                       JP8
                                   connector(VSYNCH)

  External battery       J20       Green PC LED                   JP18

  Turbo switch           J21       Green PC connector             JP42

  Turbo LED              J22       32-bit PCI slots            PC1  PC4

  Green PC               JP2       32-bit VESA local bus       SL1 & SL2
  connector (GPORT)                slots

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Monitor type select monochrome          JP3              Open

      Monitor type select EGA/VGA             JP3             Closed

     CMOS memory normal operation            JP5           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP5           Pins 2 & 3
                                                              closed

              SIMM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       None

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         None

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         None

      17MB        (4) 256K x 9    (4) 4M x 9

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        None

      80MB        (4) 4M x 9     (4) 16M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

   256KB (A)      (4) 32K x 8     (4) 32K x 8    (1) 32K x 8

   256KB (B)      (4) 64K x 8        None        (1) 32K x 8

   512KB (A)     (4) 128K x 8        None        (1) 32K x 8

   512KB (B)      (4) 64K x 8     (4) 64K x 8    (1) 32K x 8

      1MB        (4) 128K x 8    (4) 128K x 8    (1) 128K x 8

                        CACHE JUMPER CONFIGURATION

      Size              JP13               JP14                JP33

   256KB (A)         Pins 1 & 2         Any setting         Pins 1 & 2
                       closed                                 closed

   256KB (B)         Pins 2 & 3         Any setting         Pins 1 & 2
                       closed                                 closed

   512KB (A)         Pins 2 & 3         Any setting         Pins 2 & 3
                       closed                                 closed

   512KB (B)        Any setting          Pins 1 & 2         Pins 2 & 3
                                          closed              closed

      1MB           Any setting          Pins 2 & 3         Pins 2 & 3
                                          closed              closed

                 CPU SPEED SELECTION

   Speed      JP34       JP35      JP36       JP39

   25MHz     Closed      Open      Open      Closed

   33MHz     Closed     Closed    Closed      Open

   40MHz     Closed     Closed     Open       Open

  50iMHz     Closed      Open      Open      Closed

   50MHz      Open       Open     Closed      Open

  66iMHz     Closed     Closed    Closed      Open

  75iMHz     Closed      Open      Open      Closed

  100iMHz    Closed     Closed    Closed      Open

                            CPU TYPE SELECTION

      Type         JP31        JP32        JP40        JP41        JP45

     CX486S        4 & 5       5 & 6       2 & 3      2 & 3       2 & 3

    AM486SX        Open        Open        Open       2 & 3       1 & 2

    80486SX        Open        Open        Open       2 & 3       1 & 2

   SL80486SX      3 & 4, 5     Open        1 & 2      2 & 3       2 & 3
                    & 6

    CX486DX        4 & 5       5 & 6       2 & 3     1 & 2, 3     2 & 3
                                                       & 4

    AM486DX        Open        Open        Open      1 & 2, 3     1 & 2
                                                       & 4

    80486DX        Open        Open        Open      1 & 2, 3     1 & 2
                                                       & 4

   SL80486DX      3 & 4, 5     Open        1 & 2     1 & 2, 3     2 & 3
                    & 6                                & 4

    AM486DX2       Open        Open        Open      1 & 2, 3     1 & 2
                                                       & 4

    80486DX2       Open        Open        Open      1 & 2, 3     1 & 2
                                                       & 4

   SL80486DX2     3 & 4, 5     Open        1 & 2     1 & 2, 3     2 & 3
                    & 6                                & 4

    80486DX4      3 & 4, 5     Open        1 & 2     1 & 2, 3     2 & 3
                    & 6                                & 4

      P24D        3 & 4, 5    2 & 3, 4    1 & 2, 3   1 & 2, 3     2 & 3
                    & 6         & 5         & 4        & 4

      P24T         5 & 6       3 & 4       1 & 2     1 & 2, 3     2 & 3
                                                       & 4

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

      Type         JP46       JP52        JP53        JP54        JP63

     CX486S      1 & 3, 2     Open       Closed      1 & 2       Closed
                   & 4

    AM486SX      1 & 3, 2     Open        Open        Open        Open
                   & 4

    80486SX      1 & 3, 2     Open        Open        Open        Open
                   & 4

   SL80486SX     1 & 3, 2     Open        Open        Open        Open
                   & 4

    CX486DX      1 & 3, 2    2 & 3        Open       1 & 2       Closed
                   & 4

    AM486DX      1 & 3, 2    2 & 3        Open        Open        Open
                   & 4

    80486DX      1 & 3, 2    2 & 3        Open        Open        Open
                   & 4

   SL80486DX     1 & 3, 2    2 & 3        Open        Open        Open
                   & 4

    AM486DX2     1 & 3, 2    2 & 3        Open        Open        Open
                   & 4

    80486DX2     1 & 3, 2    2 & 3        Open        Open        Open
                   & 4

   SL80486DX2    1 & 3, 2    2 & 3        Open        Open        Open
                   & 4

    80486DX4     3 & 5, 4    2 & 3        Open        Open        Open
                   & 6

      P24D       1 & 3, 2    2 & 3        Open       2 & 3        Open
                   & 4

      P24T       1 & 3, 2    1 & 2        Open       1 & 2        Open
                   & 4

  Note: Pins designated should be in the closed position.

  CPU MULTIPLIER SELECTION (80486DX4 ONLY)

      Multiplier               JP64

          2x             Pins 2 & 3 closed

         2.5x            Pins 4 & 5 closed

          3x             Pins 1 & 2 closed

                           WAIT STATE SELECTION

               Setting                                JP38

                     0                                Open

                    1                               Closed

                          VL-BUS SPEED SELECTION

                Setting                                JP37

                  <= 33MHz                             Open

                 >33 MHz                             Closed

                   PCI BUS CLOCK SELECTION

       Setting               JP20                 JP27

       ASYNCH               Closed         Pins 2 & 3 closed

        SYNCH                Open          Pins 1 & 2 closed

                           PCI TRIGGER SELECTION

    Setting      JP9 (PC3)      JP10 (PC4)    JP11 (PC1)      JP12 (PC2)

     Level       Pins 1 & 2     Pins 1 & 2     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

     Edge        Pins 2 & 3     Pins 2 & 3     Pins 2 & 3     Pins 2 & 3
                   closed         closed        closed          closed

           PCI INTERRUPT SELECTION (IRQ14 FOR PCI1)

       Setting              JP10B                JP10L

        Level          Pins 1 & 2 closed          N/A

        Edge                 N/A                 Closed

                   PCI INTERRUPT SELECTION (PCI 2, 3, 4)

   IRQ      Setting    JP10A      JP10B      JP10C      JP10D     JP10E

    3        Level      Open       Open      Open       Open       Open

    3        Edge       Open       Open      Open       Open       Open

    4        Level      Open       Open      Open       Open       Open

    4        Edge       Open       Open      Open       Open       Open

    5        Level      Open       Open      Open       Open       Open

    5        Edge       Open       Open      Open       Open       Open

    6        Level      Open       Open      Open       Open       Open

    6        Edge       Open       Open      Open       Open       Open

    7        Level      Open       Open      Open       Open       Open

    7        Edge       Open       Open      Open       Open       Open

    9        Level      Open       Open      Open       Open       Open

    9        Edge       Open       Open      Open       Open       Open

    10       Level      Open       Open      Open       Open      1 & 2

    10       Edge       Open       Open      Open       Open      2 & 3

    11       Level      Open       Open      Open       1 & 2      Open

    11       Edge       Open       Open      Open       2 & 3      Open

    12       Level      Open       Open      1 & 2      Open       Open

    12       Edge       Open       Open      2 & 3      Open       Open

    14       Level      Open      1 & 2      Open       Open       Open

    14       Edge       Open      2 & 3      Open       Open       Open

    15       Level     1 & 2       Open      Open       Open       Open

    15       Edge      2 & 3       Open      Open       Open       Open

            Note: Pins designated should be in the closed position.

                   PCI INTERRUPT SELECTION (PCI 2, 3, 4)

  IRQ    Setting    JP10F    JP10G     JP10H    JP10I    JP10J     JP10K

   3      Level      Open     Open     Open     Open      Open     1 & 2

   3       Edge      Open     Open     Open     Open      Open     2 & 3

   4      Level      Open     Open     Open     Open     1 & 2     Open

   4       Edge      Open     Open     Open     Open     2 & 3     Open

   5      Level      Open     Open     Open     1 & 2     Open     Open

   5       Edge      Open     Open     Open     2 & 3     Open     Open

   6      Level      Open     Open     1 & 2    Open      Open     Open

   6       Edge      Open     Open     2 & 3    Open      Open     Open

   7      Level      Open    1 & 2     Open     Open      Open     Open

   7       Edge      Open    2 & 3     Open     Open      Open     Open

   9      Level     1 & 2     Open     Open     Open      Open     Open

   9       Edge     2 & 3     Open     Open     Open      Open     Open

  10      Level      Open     Open     Open     Open      Open     Open

  10       Edge      Open     Open     Open     Open      Open     Open

  11      Level      Open     Open     Open     Open      Open     Open

  11       Edge      Open     Open     Open     Open      Open     Open

  12      Level      Open     Open     Open     Open      Open     Open

  12       Edge      Open     Open     Open     Open      Open     Open

  14      Level      Open     Open     Open     Open      Open     Open

  14       Edge      Open     Open     Open     Open      Open     Open

  15      Level      Open     Open     Open     Open      Open     Open

  15       Edge      Open     Open     Open     Open      Open     Open

  Note: Pins designated should be in the closed position.

