
MYLEX CORPORATION

MVE486

Processor        80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed  20/25/33/50(internal)/50/66(internal)MHz
Chip Set         OPTI
Max. Onboard DRAM128MB
Cache            64/128/256KB
BIOS             MYLEX
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2), floppy drive interface,

                 IDE interface, parallel port, serial ports (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port 1              COM1      Speaker                    P19

  Serial port 2              COM2      Power LED & keylock        P20

  Parallel port               P4       IDE interface LED          P21

  Floppy drive                P5       Turbo LED                  P23
  interface

  IDE interface port          P8       32-bit VESA Local bus       S1
                                       slot

  Reset switch               P18       32-bit VESA Local bus       S2
                                       slot

                                    USER CONFIGURABLE SETTINGS

                  Function                            Jumper                     Position

     Factory configured - do not alter                 J1                          On

     Factory configured - do not alter                 J2                  pins 2 & 3 closed

     Factory configured - do not alter                 J3                  pins 1 & 2 closed

     Factory configured - do not alter                 J4                         Open

     Factory configured - do not alter                 J8                        Closed

     Factory configured - do not alter                 J12                       Closed

     Factory configured - do not alter                 J16                       Closed

     Factory configured - do not alter                 J17                       Closed

     Factory configured - do not alter                 J19                       Closed

     Factory configured - do not alter                 J21                       Closed

     Factory configured - do not alter                 J23                       Closed

     Factory configured - do not alter                 J30                        Open

     Monitor type select color                         P1                        Closed

      Monitor type select monochrome                    P1                         Open

                            CACHE CONFIGURATION

    Size      Max Cachable      Bank 0      Bank 1     TAG 0      TAG 1

    64KB          16MB         (4) 8K x    (4) 8K x    (1) 8K      NONE
                                  8           8         x 8

   128KB          32MB         (4) 32K x     NONE      (1) 8K      NONE
                                  8                     x 8

   256KB          63MB         (4) 32K x   (4) 32K x   (1) 8K    (1) 8K x
                                  8           8         x 8         8

                        CACHE JUMPER CONFIGURATION

   Size         J11          J18         J20          J22         J24

   64KB      pins 2 & 3     Open         Open        Open         Open
              closed

   128KB     pins 1 & 2     Open        Closed       Open        Closed
              closed

   256KB     pins 2 & 3    Closed       Closed      Closed       Closed
              closed

                          CPU TYPE CONFIGURATION

          Type                      J7                      J13

         80486SX             pins 2 & 3 closed              Open

         80487SX            pins 1 & 2 and 3 & 4     pins 1 & 2 closed
                                  closed

         80486DX            pins 1 & 2 and 3 & 4     pins 2 & 3 closed
                                  closed

        ODP486SX            pins 1 & 2 and 3 & 4     pins 1 & 2 closed
                                  closed

        80486DX2            pins 1 & 2 and 3 & 4     pins 2 & 3 closed
                                  closed

                          CPU SPEED CONFIGURATION

  Speed     J5      J6      J25       J26       J27       J28       J29

  20MHz    pins    pins    Open      Open     Closed     Open      Open
           1 & 2   1 & 2

  25MHz    pins    pins   Closed     Open      Open      Open     Closed
           2 & 3   1 & 2

  33MHz    pins    pins    Open     Closed     Open      Open     Closed
           2 & 3   1 & 2

   50i     pins    pins   Closed     Open      Open      Open     Closed
   MHz     2 & 3   1 & 2

  50MHz    pins    pins   Closed    Closed     Open     Closed    Closed
           2 & 3   2 & 3

   66i     pins    pins    Open     Closed     Open      Open     Closed
   MHz     2 & 3   1 & 2

  Note:Pins designated should be in the closed position.

                         LOCAL BUS ENABLE JUMPERS

        Setting             J9          J10          J14          J15

        Enabled         pins 2 & 3   pins 2 & 3   pins 2 & 3   pins 2 & 3

       Disabled         pins 1 & 2   pins 1 & 2   pins 1 & 2   pins 1 & 2

  Note:Pins designated should be in the closed position.

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

     8MB         (1) 512K x    (1) 512K x     (1) 512K x    (1) 512K x 36
                    36             36             36

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

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

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

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

     14MB        (1) 512K x   (1) 1M x 36    (1) 2M x 36        None
                    36

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

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

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

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

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

     20MB        (1) 512K x    (1) 512K x    (1) 2M x 36     (1) 2M x 36
                    36             36

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

     22MB        (1) 512K x   (1) 1M x 36    (1) 2M x 36     (1) 2M x 36
                    36

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

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

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

     26MB        (1) 512K x   (1) 2M x 36    (1) 2M x 36     (1) 2M x 36
                    36

     28MB       (1) 1M x 36   (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

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

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

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

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

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

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

     48MB       (1) 2M x 36   (1) 2M x 36    (1) 4M x 36     (1) 4M x 36

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

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

                        DRAM CONFIGURATION (CONT.)

     Size          Bank 0         Bank 1        Bank 2         Bank 3

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

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

     80MB       (1) 2M x 36    (1) 2M x 36    (1) 8M x 36    (1) 8M x 36

     96MB       (1) 4M x 36    (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

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

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

