
SOYO COMPUTER CO., LTD.

SY-4SAW/2/W5

Processor  UMCU5S/80486SX/SL80486SX/80486SX2/SL80486SX2/CX486DX/
           TI486DX/SGS486DX/80486DX/SL80486DX/CX486DX2/TI486DX2/
           SGS486DX2/UMC486DX2/AM486DX2/80486DX2/SL80486DX2/
           80486DX4/TI486DX4/SGS486DX4/AM486DX4/80486DX4/P24D/P24T/ CX M1SC/AM
           X5
Processor  25/33/40/50(internal)/50/63(internal)/66(internal)/75(internal)/
Speed      80(internal)/83(internal)100(internal)/120(internal)/133(internal)/
           150(internal)/160(internal)MHz
Chip Set   SIS
Maximum    256MB
Onboard
Memory
Cache      256/512KB
BIOS       Award
Dimensions 250mm x 220mm
I/O        32-bit VESA local bus slot, 32-bit PCI slots (4), green PC
Options    connector, floppy drive interface, IDE interfaces (2), parallel
           port, PS/2 mouse interface, serial ports (2)
NPU        None
Options

[Image]

                                CONNECTIONS

        Function            Label            Function            Label

  Serial port 2              CN1       Speaker                    J18

  Serial port 1              CN2       Reset switch               J19

  Floppy drive               CN3       External battery           J20
  interface

  Parallel port              CN4       Turbo switch               J21

  IDE interface 1            CN5       Turbo LED                  J22

  IDE interface 2            CN6       IDE interface LED 2        JP17

  PS/2 mouse interface        J1       IDE interface LED 1        JP18

  Green PC connector          J7       32-bit PCI slots        PC1 - PC4

  Power LED & keylock        J17       32-bit VESA local bus      SL1
                                       slot

                        USER CONFIGURABLE SETTINGS

                 Setting                      Label          Position

     Factory configured - do not alter        JP1          Pins 1 & 2
                                                              closed

      BIOS type select EPROM/flash             JP2          Pins 2 & 3
                                                              closed

      BIOS type select flash                   JP2          Pins 1 & 2
                                                              closed

     Monitor type select color                JP3            Closed

      Monitor type select monochrome           JP3             Open

     PS/2 mouse disabled                      JP4             Open

      PS/2 mouse enabled                       JP4            Closed

     CMOS memory normal operation             JP5          Pins 1 & 2
                                                              closed

      CMOS memory clear                        JP5          Pins 2 & 3
                                                              closed

     Factory configured - do not alter       JP12          Pins 1 & 2
                                                              closed

     Factory configured - do not alter       JP19          Pins 2 & 3
                                                              closed

     Factory configured - do not alter       JP27          Pins 2 & 3
                                                              closed

     Factory configured - do not alter       JP28          Pins 2 & 3
                                                              closed

     Factory configured - do not alter       JP48             N/A

     Factory configured - do not alter       JP51             N/A

                                   DRAM

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     2MB        (1) 512K x        None           None           None
                    36

     2MB        (1) 256K x     (1) 256K x        None           None
                    36             36

     3MB        (1) 512K x     (1) 256K x        None           None
                    36             36

     3MB        (1) 256K x     (1) 256K x     (1) 256K x        None
                    36             36             36

     3MB        (1) 256K x     (1) 512K x        None           None
                    36             36

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

     4MB        (1) 512K x     (1) 256K x     (1) 256K x        None
                    36             36             36

     4MB        (1) 512K x     (1) 512K x        None           None
                    36             36

     4MB        (1) 256K x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

                               DRAM (CONT)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     5MB       (1) 1M x 36     (1) 256K x        None           None
                                   36

     5MB        (1) 512K x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     5MB        (1) 256K x     (1) 512K x     (1) 512K x        None
                    36             36             36

     5MB        (1) 256K x    (1) 1M x 36        None           None
                    36

     6MB       (1) 1M x 36     (1) 256K x     (1) 256K x        None
                                   36             36

     6MB       (1) 1M x 36     (1) 512K x        None           None
                                   36

     6MB        (1) 512K x     (1) 512K x     (1) 512K x        None
                    36             36             36

     6MB        (1) 512K x    (1) 1M x 36        None           None
                    36

     7MB       (1) 1M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

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

     8MB       (1) 1M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

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

     9MB       (1) 2M x 36     (1) 256K x        None           None
                                   36

     9MB        (1) 256K x    (1) 1M x 36    (1) 1M x 36        None
                    36

     9MB        (1) 256K x    (1) 2M x 36        None           None
                    36

     10MB      (1) 2M x 36     (1) 256K x     (1) 256K x        None
                                   36             36

     10MB      (1) 2M x 36     (1) 512K x        None           None
                                   36

     10MB       (1) 512K x    (1) 1M x 36    (1) 1M x 36        None
                    36

     10MB       (1) 512K x    (1) 2M x 36        None           None
                    36

     11MB      (1) 2M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     12MB      (1) 2M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

     12MB      (1) 2M x 36    (1) 1M x 36        None           None

     12MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36        None

     12MB      (1) 1M x 36    (1) 2M x 36        None           None

     13MB       (1) 256K x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

     14MB       (1) 512K x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

     16MB      (1) 4M x 36        None           None           None

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

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

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

     17MB      (1) 4M x 36     (1) 256K x        None           None
                                   36

     17MB       (1) 256K x    (1) 2M x 36    (1) 2M x 36        None
                    36

     17MB       (1) 256K x    (1) 4M x 36        None           None
                    36

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

     18MB      (1) 4M x 36     (1) 512K x        None           None
                                   36

     18MB       (1) 512K x    (1) 2M x 36    (1) 2M x 36        None
                    36

     18MB       (1) 512K x    (1) 4M x 36        None           None
                    36

     19MB      (1) 4M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     20MB      (1) 4M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

     20MB      (1) 4M x 36    (1) 1M x 36        None           None

     20MB      (1) 2M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     20MB      (1) 1M x 36    (1) 2M x 36    (1) 2M x 36        None

     20MB      (1) 1M x 36    (1) 4M x 36        None           None

                               DRAM (CONT)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     24MB      (1) 4M x 36    (1) 1M x 36    (1) 1M x 36        None

     24MB      (1) 4M x 36    (1) 2M x 36        None           None

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

     24MB      (1) 2M x 36    (1) 4M x 36        None           None

     28MB      (1) 4M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     32MB      (1) 8M x 36        None           None           None

     32MB      (1) 4M x 36    (1) 2M x 36    (1) 2M x 36        None

     32MB      (1) 4M x 36    (1) 4M x 36        None           None

     33MB      (1) 8M x 36     (1) 256K x        None           None
                                   36

     33MB       (1) 256K x    (1) 4M x 36    (1) 4M x 36        None
                    36

     33MB       (1) 256K x    (1) 8M x 36        None           None
                    36

     34MB      (1) 8M x 36     (1) 256K x     (1) 256K x        None
                                   36             36

     34MB      (1) 8M x 36     (1) 512K x        None           None
                                   36

     34MB       (1) 512K x    (1) 4M x 36    (1) 4M x 36        None
                    36

     34MB       (1) 512K x    (1) 8M x 36        None           None
                    36

     35MB      (1) 8M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     36MB      (1) 8M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

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

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

     40MB      (1) 8M x 36    (1) 2M x 36        None           None

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

     40MB      (1) 2M x 36    (1) 8M x 36        None           None

     44MB      (1) 8M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     48MB      (1) 8M x 36    (1) 2M x 36    (1) 2M x 36        None

     48MB      (1) 8M x 36    (1) 4M x 36        None           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

     49MB       (1) 256K x    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36
                    36

     50MB       (1) 512K x    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36
                    36

     52MB      (1) 1M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     56MB      (1) 2M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     64MB      (1) 8M x 36    (1) 4M x 36    (1) 4M x 36        None

     64MB      (1) 8M 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) 16M x 36       None           None           None

     65MB       (1) 256K x    (1) 8M x 36    (1) 8M x 36        None
                    36

     65MB      (1) 16M x 36    (1) 256K x        None           None
                                   36

     66MB      (1) 16M x 36    (1) 256K x     (1) 256K x        None
                                   36             36

     66MB      (1) 16M x 36    (1) 512K x        None           None
                                   36

     66MB       (1) 512K x    (1) 8M x 36    (1) 8M x 36        None
                    36

                               DRAM (CONT)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     67MB        (1) 16M x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     68MB        (1) 16M x     (1) 512K x     (1) 512K x        None
                    36             36             36

     68MB        (1) 16M x    (1) 1M x 36        None           None
                    36

     68MB       (1) 1M x 36   (1) 8M x 36    (1) 8M x 36        None

     72MB        (1) 16M x    (1) 1M x 36    (1) 1M x 36        None
                    36

     72MB        (1) 16M x    (1) 2M x 36        None           None
                    36

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

     76MB        (1) 16M x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

     80MB        (1) 16M x    (1) 2M x 36    (1) 2M x 36        None
                    36

     80MB        (1) 16M x    (1) 4M x 36        None           None
                    36

     80MB       (1) 8M x 36   (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     80MB       (1) 4M x 36   (1) 8M x 36    (1) 8M x 36        None

     96MB        (1) 16M x    (1) 4M x 36    (1) 4M x 36        None
                    36

     96MB        (1) 16M x    (1) 8M x 36        None           None
                    36

     96MB       (1) 8M x 36   (1) 8M x 36    (1) 8M x 36        None

     112MB       (1) 16M x    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36
                    36

     128MB       (1) 16M x    (1) 16M x 36       None           None
                    36

     128MB       (1) 16M x    (1) 8M x 36    (1) 8M x 36        None
                    36

     192MB       (1) 16M x    (1) 16M x 36   (1) 16M x 36       None
                    36

     256MB       (1) 16M x    (1) 16M x 36   (1) 16M x 36   (1) 16M x 36
                    36

  Note: Board also accepts x 32 SIMMs.

                       CACHE SIZE

       Size              Bank 0              TAG

       256KB          (4) 64K x 8      (1) 16K/32K x 8

       512KB          (4) 128K x 8       (1) 32K x 8

                            CACHE JUMPER

         Size                   JP29                   JP47

   256KB (Aster TAG)            Open            Pins 2 & 3 closed

  256KB (Winbond TAG)    Pins 1 & 2 closed             Open

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

                                 CPU TYPE

       Setting           JP30         JP31          JP32         JP33

       UMC U5S           Open       1 & 2, 3 &   1 & 2, 3 &      3 & 4
                                        4            4

       80486SX           3 & 4        Open         2 & 3         Open

      SL80486SX          3 & 4        Open         2 & 3         Open

      80486SX2           3 & 4        Open         2 & 3         Open

     SL80486SX2          3 & 4        Open         2 & 3         Open

       CX486DX           2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

       TI486DX           2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

      SGS486DX           2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

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

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

   CX486DX2-50/66        2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

     CX486DX2-80         2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

   TI486DX2-50/66        2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

     TI486DX2-80         2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

   SGS486DX2-50/66       2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

    SGS486DX2-80         2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

      UMC486DX2          3 & 4        3 & 4      1 & 2, 3 &      Open
                                                     4

   AM486DX2(NV8B)      1 & 2, 3 &     3 & 4      1 & 2, 3 &      Open
                           4                         4

  AM486DX2-66(NV8T)      3 & 4        1 & 2      1 & 2, 3 &      Open
                                                     4

     AM486DX2-66         3 & 4        1 & 2      1 & 2, 3 &      Open
                                                     4

  AM486DX2-80(NV8T)      3 & 4        1 & 2      1 & 2, 3 &      Open
                                                     4

     AM486DX2-80         3 & 4        1 & 2      1 & 2, 3 &      Open
                                                     4

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

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

      CX486DX4           2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

      TI486DX4           2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

      SGS486DX4          2 & 3        3 & 4      1 & 2, 3 &      2 & 3
                                                     4

   AM486DX4(NV8T)        3 & 4        1 & 2      1 & 2, 3 &      Open
                                                     4

   AM486DX4(NV8B)      1 & 2, 3 &     3 & 4      1 & 2, 3 &      Open
                           4                         4

    80486DX4 (5v)        3 & 4        3 & 4      1 & 2, 3 &      Open
                                                     4

  80486DX4 (3.45v)       3 & 4        3 & 4      1 & 2, 3 &      Open
                                                     4

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

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

       CX M1SC         1 & 2, 3 &     3 & 4      1 & 2, 3 &      Open
                           4                         4

      AM X5-150        1 & 2, 3 &     3 & 4      1 & 2, 3 &      Open
                           4                         4

    AM X5-133/160      1 & 2, 3 &     3 & 4      1 & 2, 3 &      Open
                           4                         4

  Note: Pins designated should be in the closed position.

                             CPU TYPE (CONT)

         Setting              JP34        JP36        JP37        JP38

         UMC U5S              Open        Open        Open        Open

         80486SX              Open        Open       4 & 5        Open

        SL80486SX             Open        Open       4 & 5        Open

         80486SX2             Open        Open       4 & 5        Open

        SL80486SX2            Open        Open       4 & 5        Open

         CX486DX              Open        Open       2 & 3        2 & 3

         TI486DX              Open        Open       2 & 3        2 & 3

         SGS486DX             Open        Open       2 & 3        2 & 3

         80486DX              Open        Open       4 & 5        Open

        SL80486DX             Open        Open       4 & 5        Open

  CX486DX2-50/66 (3.6v)       Open        Open       2 & 3        2 & 3

   CX486DX2-50/66 (5v)        Open        Open       2 & 3        2 & 3

       CX486DX2-80            Open        Open       2 & 3        2 & 3

  TI486DX2-50/66 (3.6v)       Open        Open       2 & 3        2 & 3

   TI486DX2-50/66 (5v)        Open        Open       2 & 3        2 & 3

       TI486DX2-80            Open        Open       2 & 3        2 & 3

  SGS486DX2-50/66 (3.6v)      Open        Open       2 & 3        2 & 3

   SGS486DX2-50/66 (5v)       Open        Open       2 & 3        2 & 3

       SGS486DX2-80           Open        Open       2 & 3        2 & 3

        UMC486DX2             Open        Open       4 & 5        Open

      AM486DX2(NV8B)         1 & 2        Open       4 & 5        1 & 2

    AM486DX2-66(NV8T)        2 & 3        Open       4 & 5        Open

       AM486DX2-66           2 & 3        Open       4 & 5        Open

    AM486DX2-80(NV8T)        2 & 3        Open       4 & 5        Open

       AM486DX2-80           2 & 3        Open       4 & 5        Open

         80486DX2             Open        Open       4 & 5        Open

        SL80486DX2            Open        Open       4 & 5        Open

         CX486DX4             Open        Open       2 & 3        2 & 3

         TI486DX4             Open        Open       2 & 3        2 & 3

        SGS486DX4             Open        Open       2 & 3        2 & 3

      AM486DX4(NV8T)         1 & 2        Open       4 & 5        Open

      AM486DX4(NV8B)         1 & 2        Open       4 & 5        1 & 2

      80486DX4 (5v)           Open        Open       4 & 5        Open

     80486DX4 (3.45v)         Open        Open       4 & 5        Open

           P24D              1 & 2        Open       4 & 5        1 & 2

           P24T               Open       1 & 2       1 & 2        1 & 2

         CX M1SC             1 & 2        Open       4 & 5        1 & 2

        AM X5-150            1 & 2        Open       4 & 5        1 & 2

      AM X5-133/160          1 & 2        Open       4 & 5        1 & 2

  Note: Pins designated should be in the closed position.

                             CPU TYPE (CONT)

         Setting                JP39          JP40      JP41       JP42

         UMC U5S               3 & 4         1 & 3,     Open      2 & 3
                                             2 & 4

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

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

         80486SX2              3 & 4         1 & 3,     Open      2 & 3
                                             2 & 4

        SL80486SX2             3 & 4         1 & 3,     Open      2 & 3
                                             2 & 4

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

         TI486DX            Unidentified     1 & 3,     Open      2 & 3
                                             2 & 4

         SGS486DX           Unidentified     1 & 3,     Open      2 & 3
                                             2 & 4

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

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

  CX486DX2-50/66 (3.6v)        5 & 6         3 & 5,     Open      2 & 3
                                             4 & 6

   CX486DX2-50/66 (5v)         5 & 6         1 & 3,     Open      2 & 3
                                             2 & 4

       CX486DX2-80             1 & 2         3 & 5,     Open      2 & 3
                                             4 & 6

  TI486DX2-50/66 (3.6v)        5 & 6         3 & 5,     Open      2 & 3
                                             4 & 6

   TI486DX2-50/66 (5v)         5 & 6         1 & 3,     Open      2 & 3
                                             2 & 4

       TI486DX2-80             1 & 2         3 & 5,     Open      2 & 3
                                             4 & 6

  SGS486DX2-50/66 (3.6v)       5 & 6         3 & 5,     Open      2 & 3
                                             4 & 6

   SGS486DX2-50/66 (5v)        5 & 6         1 & 3,     Open      2 & 3
                                             2 & 4

       SGS486DX2-80            1 & 2         3 & 5,     Open      2 & 3
                                             4 & 6

        UMC486DX2              3 & 4         1 & 3,     Open      2 & 3
                                             2 & 4

      AM486DX2(NV8B)           3 & 4         3 & 5,     1 & 2     1 & 2
                                             4 & 6

    AM486DX2-66(NV8T)          3 & 4         3 & 5,     Open      2 & 3
                                             4 & 6

       AM486DX2-66             3 & 4         1 & 3,     Open      2 & 3
                                             2 & 4

    AM486DX2-80(NV8T)          3 & 4         3 & 5,     Open      2 & 3
                                             4 & 6

       AM486DX2-80             3 & 4         1 & 3,     Open      2 & 3
                                             2 & 4

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

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

         CX486DX4              3 & 4         3 & 5,     Open      2 & 3
                                             4 & 6

         TI486DX4              3 & 4         3 & 5,     Open      2 & 3
                                             4 & 6

        SGS486DX4              3 & 4         3 & 5,     Open      2 & 3
                                             4 & 6

     AM486DX4 (NV8T)           3 & 4         3 & 5,     Open      2 & 3
                                             4 & 6

      AM486DX4(NV8B)           3 & 4         3 & 5,     1 & 2     1 & 2
                                             4 & 6

      80486DX4 (5v)            3 & 4         1 & 3,     Open      2 & 3
                                             2 & 4

     80486DX4 (3.45v)          3 & 4         3 & 5,     Open      2 & 3
                                             4 & 6

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

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

         CX M1SC               3 & 4         3 & 5,     1 & 2     2 & 3
                                             4 & 6

        AM X5-150              3 & 4         3 & 5,     1 & 2     1 & 2
                                             4 & 6

      AM X5-133/160            3 & 4         3 & 5,     1 & 2     1 & 2
                                             4 & 6

  Note: Pins designated should be in the closed position.

                             CPU TYPE (CONT)

         Setting             JP43         JP44        JP45        JP46

         UMC U5S             Open        1 & 2       2 & 3        4 & 5

         80486SX             Open        1 & 2       1 & 2        2 & 3

        SL80486SX            Open        1 & 2       1 & 2        2 & 3

         80486SX2            Open        1 & 2       1 & 2        2 & 3

        SL80486SX2           Open        1 & 2       1 & 2        2 & 3

         CX486DX             Open         Open       1 & 2        1 & 2

         TI486DX             Open         Open       1 & 2        1 & 2

         SGS486DX            Open         Open       1 & 2        1 & 2

         80486DX             Open        1 & 2       1 & 2        2 & 3

        SL80486DX            Open        1 & 2       1 & 2        2 & 3

  CX486DX2-50/66 (3.6v)      Open         Open       1 & 2        1 & 2

    CX486DX2-50/66(5v)       Open         Open       1 & 2        1 & 2

       CX486DX2-80           Open         Open       1 & 2        1 & 2

  TI486DX2-50/66 (3.6v)      Open         Open       1 & 2        1 & 2

   TI486DX2-50/66 (5v)       Open         Open       1 & 2        1 & 2

       TI486DX2-80           Open         Open       1 & 2        1 & 2

  SGS486DX2-50/66 (3.6v)     Open         Open       1 & 2        1 & 2

   SGS486DX2-50/66 (5v)      Open         Open       1 & 2        1 & 2

       SGS486DX2-80          Open         Open       1 & 2        1 & 2

        UMC486DX2            Open        1 & 2       1 & 2        2 & 3

      AM486DX2(NV8B)         1 & 2       2 & 3       1 & 2        2 & 3

    AM486DX2-66(NV8T)        Open        1 & 2       1 & 2        2 & 3

       AM486DX2-66           Open        1 & 2       1 & 2        2 & 3

    AM486DX2-80(NV8T)        Open        1 & 2       1 & 2        2 & 3

       AM486DX2-80           Open        1 & 2       1 & 2        2 & 3

         80486DX2            Open        1 & 2       1 & 2        2 & 3

        SL80486DX2           Open        1 & 2       1 & 2        2 & 3

         CX486DX4            Open         Open       1 & 2        1 & 2

         TI486DX4            Open         Open       1 & 2        1 & 2

        SGS486DX4            Open         Open       1 & 2        1 & 2

     AM486DX4 (NV8T)         Open        1 & 2       1 & 2        2 & 3

      AM486DX4(NV8B)         Open        2 & 3       1 & 2        2 & 3

      80486DX4 (5v)          Open        1 & 2       1 & 2        2 & 3

     80486DX4 (3.45v)        Open        1 & 2       1 & 2        2 & 3

           P24D              Open        2 & 3       1 & 2        2 & 3

           P24T              Open         Open       1 & 2        2 & 3

         CX M1SC             Open        2 & 3       1 & 2        2 & 3

        AM X5-150            Open        2 & 3       1 & 2        2 & 3

      AM X5-133/160          1 & 2       2 & 3       1 & 2        2 & 3

  Note: Pins designated should be in the closed position.

                                 CPU SPEED

    Setting         JP14            JP15          JP21           JP22

     25MHz        Pins 1 & 2     Pins 1 & 2       Open           Open
                   closed          closed

     33MHz        Pins 1 & 2     Pins 1 & 2      Closed         Closed
                   closed          closed

     40MHz        Pins 1 & 2     Pins 1 & 2      Closed          Open
                   closed          closed

    50iMHz        Pins 1 & 2     Pins 1 & 2       Open           Open
                   closed          closed

     50MHz        Pins 2 & 3     Pins 1 & 2       Open          Closed
                   closed          closed

    63iMHz        Pins 1 & 2     Pins 1 & 2       Open           Open
                   closed          closed

    66iMHz        Pins 1 & 2     Pins 1 & 2      Closed         Closed
                   closed          closed

    75iMHz        Pins 1 & 2     Pins 1 & 2       Open           Open
                   closed          closed

    80iMHz        Pins 1 & 2     Pins 1 & 2      Closed          Open
                   closed          closed

    83iMHz        Pins 1 & 2     Pins 1 & 2      Closed         Closed
                   closed          closed

    100iMHz       Pins 1 & 2     Pins 1 & 2      Closed         Closed
                   closed          closed

    120iMHz       Pins 1 & 2     Pins 1 & 2      Closed          Open
                   closed          closed

    133iMHz       Pins 1 & 2     Pins 1 & 2      Closed         Closed
                   closed          closed

    150iMHz       Pins 2 & 3     Pins 1 & 2       Open          Closed
                   closed          closed

    160iMHz       Pins 1 & 2     Pins 1 & 2      Closed          Open
                   closed          closed

                             DMA

       Setting               JP49                 JP50

        None                 Open                 Open

        DMA1           Pins 2 & 3 closed   Pins 2 & 3 closed

        DMA3           Pins 1 & 2 closed   Pins 1 & 2 closed

