
AQUARIUS SYSTEMS, INC.

MB-540S

Processor          CXM1/AM K5/Pentium
Processor Speed    75/90/100/120/133/150/180MHz
Chip Set           OPTI
Max. Onboard DRAM  512MB
Cache              256/512KB
BIOS               AMI
Dimensions         330mm x 220mm
I/O Options        32-bit PCI slots (4), green PC connector, floppy drive
                   interface, IDE interfaces (2), parallel port, PS/2
                   mouse port, serial ports (2), VRM connector, cache slot
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                 Location

  PS/2 mouse port          CN1        Turbo switch          JP20 pins 6 &
                                                                 16

  Serial port 1            CN2        Turbo LED             JP20 pins 7 &
                                                                 17

  Serial port 2            CN3        Reset switch          JP20 pins 8 &
                                                                 18

  Floppy drive             CN4        Green PC connector    JP20 pins 9 &
  interface                                                      19

  Parallel port            CN5        IDE interface LED     JP20 pins 10
                                                                & 20

  IDE interface 2          CN6        Speaker               JP20 pins 11
                                                                - 14

  IDE interface 1          CN7        32-bit PCI slots       PC1 - PC4

  VRM connector            CN8        Cache slot                SL1

  Power LED &           JP20 pins 1
  keylock                  - 5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             JP3              N/A
      alter

     Parallel port IRQ select IRQ7           JP10          pins 2 & 3
                                                              closed

      Parallel port IRQ select IRQ5           JP10          pins 1 & 2
                                                              closed

     CMOS memory normal operation            JP16          pins 2 & 3
                                                              closed

      CMOS memory clear                       JP16          pins 1 & 2
                                                              closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         NONE

       4MB        (2) 512K x 36         NONE

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

       6MB        (2) 256K x 36    (2) 512K x 36

       8MB         (2) 1M x 36          NONE

       8MB        (2) 512K x 36    (2) 512K x 36

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

      12MB        (2) 512K x 36     (2) 1M x 36

      16MB         (2) 2M x 36          NONE

      16MB         (2) 1M x 36      (2) 1M x 36

      18MB        (2) 256K x 36     (2) 2M x 36

      20MB        (2) 512K x 36     (2) 2M x 36

      24MB         (2) 1M x 36      (2) 2M x 36

      32MB         (2) 4M x 36          NONE

      32MB         (2) 2M x 36      (2) 2M x 36

      34MB        (2) 256K x 36     (2) 4M x 36

      36MB        (2) 512K x 36     (2) 4M x 36

      40MB         (2) 1M x 36      (2) 4M x 36

      48MB         (2) 2M x 36      (2) 4M x 36

      64MB         (2) 8M x 36          NONE

      64MB         (2) 4M x 36      (2) 4M x 36

      66MB        (2) 256K x 36     (2) 8M x 36

      68MB        (2) 512K x 36     (2) 8M x 36

      72MB         (2) 1M x 36      (2) 8M x 36

      80MB         (2) 2M x 36      (2) 8M x 36

      96MB         (2) 4M x 36      (2) 8M x 36

      128MB        (2) 8M x 36      (2) 8M x 36

      128MB        (2) 16M x 36         NONE

      130MB       (2) 256K x 36     (2) 16M x 36

      132MB       (2) 512K x 36     (2) 16M x 36

      136MB        (2) 1M x 36      (2) 16M x 36

      144MB        (2) 2M x 36      (2) 16M x 36

      160MB        (2) 4M x 36      (2) 16M x 36

      192MB        (2) 8M x 36      (2) 16M x 36

      256MB        (2) 16M x 36     (2) 16M x 36

      256MB        (2) 32M x 36         NONE

          DRAM CONFIGURATION (CON'T)

      Size          Bank 0          Bank 1

     264MB        (2) 1M x 36    (2) 32M x 36

     272MB        (2) 2M x 36    (2) 32M x 36

     288MB        (2) 4M x 36    (2) 32M x 36

     320MB        (2) 8M x 36    (2) 32M x 36

     384MB        (2) 16M x 36   (2) 32M x 36

     512MB        (2) 32M x 36   (2) 32M x 36

                            CACHE CONFIGURATION

    Size         U23         U24             TAG                SL1

    256KB      (1) 32K x   (1) 32K    (1) 16K/32K/64K x    Not installed
                  32        x 32              8

    512KB      (1) 32K x   (1) 32K          NONE             Installed
                  32        x 32

  CACHE JUMPER CONFIGURATION

     Size            JP4

     256KB           Open

     512KB          Closed

                          CPU TYPE CONFIGURATION

    Type         JP12           RS1             RS2             RS3

    CXM1         Open      Not installed     Installed     Not installed

    AM K5        Open      Not installed   Not installed     Installed

   Pentium      Closed       Installed     Not installed   Not installed

               CPU SPEED CONFIGURATION (INTEL PENTIUM ONLY)

    Speed           JP13           JP18          JP19           JP31

    75MHz        pins 1 & 2        Open          Open         pins 1 & 2
                   closed                                      closed

    90MHz        pins 1 & 2       Closed         Open         pins 1 & 2
                   closed                                      closed

    100MHz       pins 1 & 2       Closed        Closed        pins 1 & 2
                   closed                                      closed

    120MHz       pins 2 & 3       Closed         Open         pins 1 & 2
                   closed                                      closed

    133MHz       pins 2 & 3       Closed        Closed        pins 1 & 2
                   closed                                      closed

    150MHz       pins 1 & 2        Open          Open         pins 2 & 3
                   closed                                      closed

    180MHz       pins 1 & 2       Closed         Open         pins 2 & 3
                   closed                                      closed

              CPU SPEED CONFIGURATION (CXM1 &AMP; AM K5 ONLY)

    CPU type            Speed               JP13               JP31

      CXM1               2.5x             pins 2 & 3        pins 1 & 2
                                           closed             closed

      CXM1                3x              pins 1 & 2        pins 1 & 2
                                           closed             closed

      AM K5               1x              pins 2 & 3        pins 1 & 2
                                           closed             closed

      AM K5           1.5x/2x/3x          pins 1 & 2        pins 1 & 2
                                           closed             closed

  CPU CLOCK SPEED CONFIGURATION (CXM1 &AMP; AM K5 ONLY)

       Speed              JP18                JP19

       50MHz              Open                Open

       60MHz             Closed               Open

       66MHz             Closed              Closed

                         CPU VOLTAGE CONFIGURATION

       Voltage              JP23              JP25              JP26

          3.3v            Closed             Open              Open

         3.45v             Open             Closed             Open

          3.6v             Open              Open             Closed

                             DMA CONFIGURATION

           DMA                      JP8                      JP9

           DMA 1            pins 1 & 2 closed        pins 1 & 2 closed

           DMA 3            pins 2 & 3 closed        pins 2 & 3 closed

[Image]

                          CPU TYPE CONFIGURATION

       Type               JP1               JP2                JP3

       CXM1              Closed          pins 2 & 3           Closed
                                           closed

       AM K5             Closed          pins 2 & 3            Open
                                           closed

      Pentium            Closed          pins 2 & 3            Open
                                           closed

  Note: These jumpers are located on the cache module.

