
GENOA SYSTEMS CORPORATION

4X4-VL

Processor  CX486SX/80486SX/SL80486SX/CX486DX/SLCX486DX/AM486DX/80486DX/
           SL80486DX/CX486DX2/SLCX486DX2/AM486DX2/80486DX2/SL80486DX2/
           AM486DX4/80486DX4/P24CT/P24D/Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   VIA
Max.       128MB
Onboard
DRAM
Cache      128/256/512KB
BIOS       Award
Dimensions 254mm x 218mm
I/O        Daughter board connector, PS/2 mouse port, green PC connector,
Options    32-bit VESA local bus slots (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Daughter board             CN6       Speaker                     J8
  connector

  Green PC LED                J3       Power LED & keylock         J9

  Green PC power              J4       Green PC connector         J10
  connector

  Turbo LED                   J5       Chassis fan power          J11

  Turbo switch                J6       PS/2 mouse interface        S1

  Reset switch                J7       32-bit VESA local bus   SL1 - SL2
                                       slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     AM486DX2 clock select 2x                 J2             Closed

      AM486DX2 clock select 3x                 J2              Open

     Password select normal operation        JCP              Open

      Password select clear                   JCP             Closed

     Monitor type select monochrome          JP1              Open

      Monitor type select color               JP1             Closed

      CPU type select Intel                   JP3           pins 1 & 2
                                                              closed

      CPU type select Cyrix                   JP3           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

     3MB        (1) 256K x     (1) 256K x     (1) 256K x
                    36             36             36

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                        DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

     21MB       (1) 256K x    (1) 1M x 36    (1) 4M x 36        NONE
                    36

     21MB       (1) 256K x    (1) 4M x 36    (1) 1M x 36        NONE
                    36

     21MB      (1) 1M x 36     (1) 256K x    (1) 4M x 36        NONE
                                   36

     21MB      (1) 1M x 36    (1) 4M x 36     (1) 256K x        NONE
                                                  36

     22MB      (1) 1M x 36    (1) 4M x 36     (1) 256K x    (1) 256K x 36
                                                  36

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

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

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

     25MB       (1) 256K x    (1) 4M x 36    (1) 1M x 36     (1) 1M x 36
                    36

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

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

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

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

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

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

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

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

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

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

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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0        Bank 1         Bank 2         Bank 3

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

     37MB        (1) 256K x    (1) 1M x 36    (1) 4M x 36    (1) 4M x 36
                     36

     37MB       (1) 1M x 36     (1) 256K x    (1) 4M x 36    (1) 4M x 36
                                   36

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

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

     49MB        (1) 256K 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

     64MB           NONE       (1) 8M x 36    (1) 8M x 36       NONE

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

     66MB        (1) 256K x     (1) 256K x    (1) 8M x 36    (1) 8M x 36
                     36            36

     66MB       (1) 8M x 36    (1) 8M x 36     (1) 256K x   (1) 256K x 36
                                                  36

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

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

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

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

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

     69MB        (1) 256K x    (1) 1M x 36    (1) 8M x 36    (1) 8M x 36
                     36

     69MB        (1) 256K x    (1) 8M x 36    (1) 1M x 36    (1) 8M x 36
                     36

     69MB       (1) 1M x 36     (1) 256K x    (1) 8M x 36    (1) 8M x 36
                                   36

     69MB       (1) 1M x 36    (1) 8M x 36     (1) 256K x    (1) 8M x 36
                                                  36

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

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

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

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

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

     81MB        (1) 256K x    (1) 4M x 36    (1) 8M x 36    (1) 8M x 36
                     36

     81MB        (1) 256K x    (1) 8M x 36    (1) 4M x 36    (1) 8M x 36
                     36

     84MB       (1) 1M x 36    (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

     84MB       (1) 1M x 36    (1) 8M x 36    (1) 4M x 36    (1) 8M x 36

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

     97MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36   (1) 256K x 36

    128MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

              CACHE CONFIGURATION

      Size          Bank 0           TAG

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

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

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

                  CACHE JUMPER CONFIGURATION

        Size                 JS1                  JS2

        128KB          pins 1 & 2 closed   pins 1 & 2 closed

        256KB          pins 2 & 3 closed   pins 1 & 2 closed

        512KB          pins 2 & 3 closed   pins 2 & 3 closed

                          CPU TYPE CONFIGURATION

     Type         JC1         JC2         JC3         JC4          JC5

   CX486SX       2 & 3       2 & 3       1 & 2        Open        2 & 3

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

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

   CX486DX       1 & 2       1 & 2       1 & 2        Open        1 & 2

  SLCX486DX      1 & 2       1 & 2       1 & 2        Open        2 & 3

   AM486DX       1 & 2       1 & 2       1 & 2        Open        1 & 2

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

  SL80486DX      1 & 2       1 & 2       1 & 2        Open        1 & 2

   CX486DX2      1 & 2       1 & 2       1 & 2        Open        1 & 2

  SLCX486DX2     1 & 2       1 & 2       1 & 2        Open        2 & 3

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

  SL80486DX2     1 & 2       1 & 2       1 & 2        Open        1 & 2

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

    P24CT        1 & 2       1 & 2       1 & 2       Closed       1 & 2

     P24T        1 & 2       1 & 2       1 & 2       Closed       1 & 2

     P24D        1 & 2       1 & 2       1 & 2       Closed       1 & 2

  N

                          CPU TYPE CONFIGURATION

     Type           RN16           RN17          RN18            RN19

    CX486SX      Installed          Not           Not             Not
                                installed      installed      installed

    80486SX          Not            Not           Not         Installed
                 installed      installed      installed

   SL80486SX         Not            Not           Not         Installed
                 installed      installed      installed

    CX486DX      Installed          Not           Not             Not
                                installed      installed      installed

   SLCX486DX     Installed          Not           Not             Not
                                installed      installed      installed

    AM486DX          Not            Not        Installed          Not
                 installed      installed                     installed

    80486DX          Not            Not           Not         Installed
                 installed      installed      installed

   SL80486DX         Not            Not           Not         Installed
                 installed      installed      installed

   CX486DX2      Installed          Not           Not             Not
                                installed      installed      installed

  SLCX486DX2     Installed          Not           Not             Not
                                installed      installed      installed

   AM486DX2          Not            Not        Installed          Not
                 installed      installed                     installed

   80486DX2          Not            Not           Not         Installed
                 installed      installed      installed

  SL80486DX2         Not            Not           Not         Installed
                 installed      installed      installed

   AM486DX4          Not            Not        Installed          Not
                 installed      installed                     installed

   80486DX4          Not            Not           Not         Installed
                 installed      installed      installed

     P24CT           Not        Installed         Not         Installed
                 installed                     installed

     P24T            Not        Installed         Not         Installed
                 installed                     installed

     P24D            Not        Installed         Not         Installed
                 installed                     installed

  Note: The exact location of RN16, RN17, RN18 and RN19 are unidentified.

  CPU JUMPER CONFIGURATION

     Type           J12

  SLAM486DX2      Closed

   AM486DX4        Open

                          CPU SPEED CONFIGURATION

      Speed           JK1           JK2           JK3           JK4

        25MHz      pins 2 & 3    pins 1 & 2    pins 2 & 3    pins 1 & 2
                      closed        closed        closed        closed

        33MHz      pins 2 & 3    pins 2 & 3    pins 1 & 2    pins 1 & 2
                      closed        closed        closed        closed

        40MHz      pins 1 & 2    pins 1 & 2    pins 2 & 3    pins 1 & 2
                      closed        closed        closed        closed

        50MHz      pins 2 & 3    pins 1 & 2    pins 2 & 3    pins 2 & 3
                      closed        closed        closed        closed

       66iMHz      pins 2 & 3    pins 2 & 3    pins 1 & 2    pins 1 & 2
                      closed        closed        closed        closed

       75iMHz      pins 2 & 3    pins 1 & 2    pins 2 & 3    pins 1 & 2
                      closed        closed        closed        closed

       100iMHz     pins 2 & 3    pins 2 & 3    pins 1 & 2    pins 1 & 2
                      closed        closed        closed        closed

                    VOLTAGE CONFIGURATION

       Voltage               JCV1                 JCV2

        3.0v           pins 1 & 2 closed          Open

        3.3v           pins 2 & 3 closed          Open

        3.45v                Open                 Open

        3.6v                 Open          pins 1 & 2 closed

        4.0v                 Open          pins 2 & 3 closed

                       VESA WAIT STATE CONFIGURATION

              Wait states                             JV1

              0 wait states                    pins 2 & 3 closed

               1 wait state                    pins 1 & 2 closed

                    VESA LOCAL BUS SPEED CONFIGURATION

               CPU speed                              JV2

                 <= 33MHz                      pins 2 & 3 closed

                 > 33MHz                       pins 1 & 2 closed

