
AQUARIUS SYSTEMS, INC.

MB-4DUVC MODEL 2

Processor  CX486S/80486SX/SL80486SX/80486SX2/SL80486SX2/CX486DX/AM486DX/
           80486DX/SL80486DX/UMCU5S/CX486DX2/AM486DX2/(SL)AM486DX2/
           (SL)AM486DXL2/SL80486DX2/P24D/AM486DX4/(SL)am486dxl4/80486DX4/
           Pentium Overdrive/CXM1
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)100(internal)MHz
Speed
Chip Set   UMC
Max.       64MB
Onboard
DRAM
Cache      64/128/256KB
BIOS       Award
Dimensions 250mm x 220mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                 Location

  Turbo LED                    D1       Turbo switch              JP27

  External battery            JP1       Speaker                   JP28

  Green PC connector          JP25      Power LED & keylock       JP29

  Reset switch                JP26      32-bit VESA local      SL1 - SL3
                                        bus slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

      Battery type select internal            JP1           pins 2 & 3
                                                              closed

      Battery type select external            JP1             Closed

      CMOS memory clear                       JP1           pins 3 & 4
                                                              closed

      Flash BIOS voltage select 5v            JP2           pins 1 & 2
                                                              closed

      Flash BIOS voltage select 12v           JP2           pins 2 & 3
                                                              closed

      Keyboard controller IC U2 not           JP3             Closed
      installed

      Keyboard controller IC U2               JP3              Open
      installed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

     22MB       (1) 512K x    (1) 4M x 36        NONE        (1) 1M x 36
                    36

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

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

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

     32MB      (1) 8M x 36        NONE           NONE           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

                    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 x 8

   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

                        CACHE JUMPER CONFIGURATION

     Size            JP7            JP8            JP9           JP10

     64KB           Open            Open          Open          2 & 3

     128KB          Open           Closed         1 & 2         1 & 2

   256KB (A)       Closed          Closed         2 & 3         2 & 3

   256KB (B)       Closed          Closed       1 & 2, 3 &      1 & 2
                                                    4

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

         Type                JP11             JP12              JP13

        CX486S           1 & 2, 3 & 4     1 & 2, 3 & 4,        2 & 3
                                              5 & 6

        80486SX              Open             2 & 3            2 & 3

       SL80486SX             1 & 2            1 & 2            2 & 3

       80486SX2              Open             2 & 3            2 & 3

      SL80486SX2             1 & 2            1 & 2            2 & 3

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

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

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

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

        UMC U5S              2 & 3            2 & 3            2 & 3

       CX486DX2          1 & 2, 3 & 4     1 & 2, 3 & 4,     1 & 2, 3 & 4
                                              5 & 6

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

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

     (SL)AM486DXL2           2 & 3            2 & 3         1 & 2, 3 & 4

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

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

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

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

  (SL)AM486DXL4 (2x)         2 & 3            2 & 3         1 & 2, 3 & 4

  (SL)AM486DXL4 (3x)         2 & 3            2 & 3         1 & 2, 3 & 4

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

   Pentium Overdrive         1 & 2            1 & 2         1 & 2, 3 & 4

         CX M1           1 & 2, 4 & 5     1 & 2, 3 & 4      1 & 2, 3 & 4

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

         Type             JP17        JP18         JP19          JP35

        CX486S            Open       2 & 3, 4    2 & 3, 4        Open
                                       & 5         & 5

       80486SX            Open        Open         Open          Open

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

       80486SX2           Open        Open         Open          Open

      SL80486SX2          Open        5 & 6      1 & 2, 3        Open
                                                   & 4

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

       AM486DX           1 & 2        Open         Open          Open

       80486DX           1 & 2        Open         Open          Open

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

       UMC U5S           3 & 4        1 & 2        Open          Open

       CX486DX2          1 & 2       2 & 3, 4     2 & 3          Open
                                       & 5

       AM486DX2          1 & 2        Open         Open          Open

     (SL)AM486DX2        1 & 2        Open         Open         Closed

    (SL)AM486DXL2       1 & 2, 3      1 & 2        Open          Open
                          & 4

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

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

    AM486DX4 (2x)        1 & 2        Open         Open         Closed

    AM486DX4 (3x)        1 & 2        Open         Open          Open

  (SL)AM486DXL4 (2x)    1 & 2, 3      1 & 2        Open         Closed
                          & 4

  (SL)AM486DXL4 (3x)    1 & 2, 3      1 & 2        Open          Open
                          & 4

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

  Pentium Overdrive      2 & 3        5 & 6      1 & 2, 3        Open
                                                   & 4

        CX M1            1 & 2       3 & 4, 5    1 & 2, 3        Open
                                       & 6         & 4

  Note: Pins designated should be in the closed position.

          CPU SPEED CONFIGURATION

   Speed      JP4        JP5        JP6

   25MHz      Open       Open     Closed

   33MHz     Closed     Closed    Closed

   40MHz      Open      Closed    Closed

  50iMHz      Open       Open     Closed

   50MHz     Closed      Open      Open

  66iMHz     Closed     Closed    Closed

  75iMHz      Open       Open     Closed

  100iMHz    Closed     Closed    Closed

       CPU SPEED CONFIGURATION (CX M1 & DX4 ONLY)

           Speed                       JP20

           CX M1                 pins 4 & 5 closed

        Intel CPU 2x             pins 2 & 3 closed

         CX CPU 2x           pins 2 & 3, 4 & 5 closed

       Intel CPU 2.5x            pins 1 & 2 closed

        Intel CPU 3x                   Open

                         CPU VOLTAGE CONFIGURATION

  Voltage    JP14    JP15    JP16     JP23      JP32      JP33     JP34

    3.3v     1 & 2   1 & 2   1 & 2    Open     Closed     Open     Open

   3.45v     1 & 2   1 & 2   1 & 2   Closed     Open      Open     Open

    3.6v     1 & 2   1 & 2   1 & 2    Open      Open     Closed    Open

     4v      1 & 2   1 & 2   1 & 2    Open      Open      Open     Closed

     5v      2 & 3   2 & 3   2 & 3    Open      Open      Open     Open

  Note: Pins designated should be in the closed position.

  VL BUS WAIT STATE CONFIGURATION

   Wait states           JP22

  0 wait states          Open

   1 wait state         Closed

  VL BUS SPEED CONFIGURATION

   CPU speed         JP21

   <= 33MHz          Open

    > 33MHz         Closed

