
VISION TECHNOLOGIES

SIS 486-471 VL BUS, VLT MB

Processor  CX486S/80486SX/SL80486SX/CX486DX/AM486DX/80486DX/AM486DXL/
           SL80486DX/CX486DX2/AM486DX2/AM486DXL2/80486DX2/SL80486DX2/ 80486DX4
Processor  20/25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   SIS
Max.       128MB
Onboard
DRAM
Cache      64/128/256/512/1024KB
BIOS       Award
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  External battery          J1         Speaker                    J7

  Green PC connector        J2         Power LED & keylock        J8
  (VGA)

  Reset switch              J4         Green PC connector        JP29

  Turbo LED                 J5         32-bit VESA local      SL1 - SL3
                                       bus slots

  Turbo switch          J6 pins 2 &
                             3

                        USER CONFIGURABLE SETTINGS

                 Function                      Jumper         Position

     Factory configured - do not alter         JP20            N/A

      Factory configured - do not alter         JP21            N/A

     Factory configured - do not alter         JP30            Open

     Factory configured - do not alter         JP35            N/A

     CMOS memory normal operation              JP38         pins 1 & 2
                                                               closed

      CMOS memory clear                         JP38         pins 2 & 3
                                                               closed

     Monitor type select                       JP39            Open
      monochrome/EGA/VGA

      Monitor type select CGA                   JP39           Closed

     RC pin for break switch enabled           JP40         pins 1 & 2
                                                               closed

      RC pin used for RC                        JP40         pins 2 & 3
                                                               closed

               DRAM CONFIGURATION 1

      Size            Bank 0           Bank 1

       1MB         (4) 256K x 9         NONE

       2MB         (4) 256K x 9    (1) 256K x 36

       4MB          (4) 1M x 9          NONE

       8MB          (4) 1M x 9      (1) 1M x 36

      16MB          (4) 4M x 9          NONE

      20MB          (4) 1M x 9      (1) 4M x 36

      32MB          (4) 4M x 9      (1) 4M x 36

      64MB          (4) 8M x 9      (1) 8M x 36

      128MB        (4) 16M x 9      (1) 16M x 36

                       DRAM CONFIGURATION 2

      Size            Bank 0           Bank 1          Bank 2

       1MB         (4) 256K x 9         NONE            NONE

       2MB         (4) 256K x 9    (1) 256K x 36        NONE

       4MB          (4) 1M x 9          NONE            NONE

       5MB         (4) 256K x 9     (1) 1M x 36         NONE

       6MB         (4) 256K x 9    (1) 256K x 36     (1) 1M x 36

       8MB          (4) 1M x 9      (1) 1M x 36         NONE

      12MB          (4) 1M x 9      (1) 1M x 36      (1) 1M x 36

      16MB          (4) 4M x 9          NONE            NONE

      17MB         (4) 256K x 9     (1) 4M x 36         NONE

      18MB         (4) 256K x 9    (1) 256K x 36     (1) 4M x 36

      20MB          (4) 1M x 9      (1) 4M x 36         NONE

      24MB          (4) 1M x 9      (1) 1M x 36      (1) 4M x 36

      32MB          (4) 4M x 9      (1) 4M x 36         NONE

      34MB         (4) 256K x 9    (1) 256K x 36     (1) 8M x 36

      36MB          (4) 1M x 9      (1) 4M x 36      (1) 4M x 36

      40MB          (4) 1M x 9      (1) 1M x 36      (1) 8M x 36

      48MB          (4) 4M x 9      (1) 4M x 36      (1) 4M x 36

      48MB          (4) 4M x 9      (1) 8M x 36         NONE

      64MB          (4) 4M x 9      (1) 4M x 36      (1) 8M x 36

               DRAM CONFIGURATION 2 (CONT)

     Size          Bank 0         Bank 1        Bank 2

     64MB       (4) 16M x 9        NONE          NONE

     68MB        (4) 1M x 9    (1) 8M x 36    (1) 8M x 36

     80MB        (4) 4M x 9    (1) 8M x 36    (1) 8M x 36

     96MB       (4) 16M x 9    (1) 8M x 36       NONE

     128MB      (4) 16M x 9    (1) 8M x 36    (1) 8M x 36

                       DRAM CONFIGURATION 3

      Size            Bank 0           Bank 1          Bank 2

       1MB             NONE        (1) 256K x 36        NONE

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

       4MB             NONE         (1) 1M x 36         NONE

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

       6MB          (4) 1M x 9     (1) 256K x 36    (1) 256K x 36

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

       8MB             NONE         (1) 2M x 36         NONE

      12MB          (4) 1M x 9      (1) 1M x 36      (1) 1M x 36

      16MB          (4) 4M x 9          NONE            NONE

      16MB             NONE         (1) 4M x 36         NONE

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

      18MB          (4) 4M x 9     (1) 256K x 36    (1) 256K x 36

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

      24MB          (4) 4M x 9      (1) 1M x 36      (1) 1M x 36

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

      32MB             NONE         (1) 8M x 36         NONE

      36MB          (4) 4M x 9      (1) 1M x 36      (1) 4M x 36

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

      48MB          (4) 4M x 9      (1) 4M x 36      (1) 4M x 36

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

      64MB         (4) 16M x 9          NONE            NONE

      72MB         (4) 16M x 9      (1) 1M x 36      (1) 1M x 36

      96MB         (4) 16M x 9      (1) 4M x 36      (1) 4M x 36

      128MB        (4) 16M x 9      (1) 8M x 36      (1) 8M x 36

                  DRAM JUMPER CONFIGURATION

    Configuration            JP36                 JP37

          1            pins 1 & 2 closed          Open

          2            pins 1 & 2 closed   pins 2 & 3 closed

          3            pins 2 & 3 closed   pins 1 & 2 closed

                            CACHE CONFIGURATION

       Size             Bank 0             Bank 1              TAG

       64KB           (4) 8K x 8         (4) 8K x 8         (1) 8K x 8

      128KB           (4) 32K x 8           NONE           (1) 8K or (1)
                                                             16K x 8

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

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

      512KB           (8) 64K x 8           NONE           (1) 32K x 8

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

  Note: The location of the TAG is unidentified.

                        CACHE JUMPER CONFIGURATION

   Size      JP1     JP2     JP3      JP25     JP26     JP27      JP28

   64KB     1 & 2   2 & 3     2 &    1 & 2    1 & 2    1 & 2      Open
                             3, 4
                             & 5

  128KB     2 & 3   1 & 2     1 &    2 & 3    1 & 2    1 & 2      Open
                             2, 3
                             & 4

  256KB     2 & 3   2 & 3     2 &    2 & 3     Open     Open     Closed
                             3, 4
                             & 5

  256KB     2 & 3   2 & 3     2 &    2 & 3    2 & 3    1 & 2      Open
                             3, 4
                             & 5

  512KB     2 & 3   1 & 2     1 &    2 & 3    2 & 3    2 & 3      Open
                             2, 3
                             & 4

   1MB      2 & 3   2 & 3     2 &    2 & 3    2 & 3    2 & 3      Open
                             3, 4
                             & 5

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

      Type          JP4         JP5         JP6        JP7         JP8

    CX486SX        Open        Open        Open       2 & 3       2 & 3

    80486SX        Open        Open        Open       3 & 4       Open

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

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

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

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

  CX486DX2-66      Open        Open        Open      1 & 2, 3     2 & 3
                                                       & 4

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

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

   AM486DXL2       Open        Open        Open      1 & 2, 3     Open
                                                       & 4

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

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

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

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

       Type          JP9        JP10        JP11       JP12        JP13

     CX486SX        2 & 3      1 & 2       2 & 3       Open      1 & 2, 3
                                                                   & 4

     80486SX        2 & 3      1 & 2        Open       Open        Open

    SL80486SX       2 & 3      1 & 2        Open       Open       2 & 3

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

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

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

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

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

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

    AM486DXL2       2 & 3      2 & 3       3 & 4      1 & 2, 3     Open
                                                        & 4

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

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

     80486DX4       2 & 3      1 & 2        Open       3 & 4      2 & 3

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

      Type         JP14     JP15     JP16      JP17      JP18      JP19

    CX486SX       2 & 3,    Open     Open     2 & 3     Closed     2 & 3
                  4 & 5

    80486SX        Open     Open     Open      Open     Closed     2 & 3

   SL80486SX      3 & 4     Open     1 & 2    4 & 5     Closed     2 & 3

    CX486DX       2 & 3,    Open     Open     2 & 3     Closed     2 & 3
                  4 & 5

    80486DX        Open     Open     Open      Open     Closed     2 & 3

   SL80486DX      3 & 4     Open     1 & 2    4 & 5     Closed     2 & 3

  CX486DX2-66     2 & 3,    Open     Open     2 & 3     Closed     2 & 3
                  4 & 5

  CX486DX2-80     2 & 3     Open     Open     2 & 3     Closed     2 & 3

    AM486DX2       Open     Open     Open      Open     Closed     2 & 3

   AM486DXL2       Open     Open     Open      Open     Closed     2 & 3

    80486DX2       Open     Open     Open      Open     Closed     2 & 3

   SL80486DX2     3 & 4     Open     1 & 2    4 & 5     Closed     2 & 3

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

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

      Type         JP33       JP34       JP41        JP42         JP43

    CX486SX       1 & 2      2 & 3     3 & 4, 5      Open         Open
                                         & 6

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

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

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

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

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

  CX486DX2-66     1 & 2      2 & 3     1 & 2, 3     Closed        Open
                                         & 4

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

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

   AM486DXL2      1 & 2      2 & 3     3 & 4, 5      Open         Open
                                         & 6

    80486DX2      2 & 3      1 & 2     3 & 4, 5      Open         Open
                                         & 6

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

    80486DX4      2 & 3      1 & 2     1 & 2, 3     Closed        Open
                                         & 4

  Note: Pins designated should be in the closed position.

     CPU SPEED CONFIGURATION (AV9107)

   Speed      JP22       JP23      JP24

   20MHz     Closed      Open     Closed

   25MHz     Closed     Closed     Open

   33MHz      Open      Closed    Closed

   40MHz     Closed      Open      Open

  50iMHz     Closed     Closed     Open

   50MHz      Open       Open     Closed

  66iMHz      Open      Closed    Closed

  75iMHz     Closed     Closed     Open

  100iMHz     Open      Closed    Closed

     CPU SPEED CONFIGURATION (MX8315)

   Speed      JP22       JP23      JP24

   20MHz      Open       Open      Open

   25MHz      Open      Closed     Open

   33MHz     Closed     Closed    Closed

   40MHz      Open      Closed    Closed

  50iMHz      Open      Closed     Open

   50MHz     Closed      Open      Open

  66iMHz     Closed     Closed    Closed

  75iMHz      Open      Closed     Open

  100iMHz    Closed     Closed    Closed

      VESA WAIT STATE CONFIGURATION

     Wait states             JP31

    0 wait states     pins 1 & 2 closed

    1 wait state      pins 2 & 3 closed

         BUS SPEED CONFIGURATION

      CPU speed              JP32

      <= 33MHz        pins 1 & 2 closed

       > 33MHz        pins 2 & 3 closed

