MYLEX CORPORATION
=================

   MAE486

   Processor             80486DX                                  
   Processor Speed       25/33MHz                                 
   Chip Set              Intel                                    
   Max. Onboard DRAM     32MB                                     
   Cache                 128KB                                    
   BIOS                  Mylex/Phoenix                            
   Dimensions            355mm x 304mm                            
   I/O Options           None                                     
   NPU Options           4167                                     

<gopher://bitreich.org/I/th99/m/M-O/31038-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Speaker             |   P11    | Turbo LED      |   P13    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |   P12    | Reset switch   |   P14    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Cache enabled                    |   J1   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache disabled                   |   J1   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | CPU speed select 33MHz           |   J2   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU speed select 25MHz           |   J2   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  J15   | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  J16   | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |Size|  J3  |  J4  |  J5  |  J6  | J7  |J8 | J9  |J10|J11|J12|
   |----+------+------+------+------+-----+---+-----+---+---+---|
   |1MB | Open | Open | Open | Open |Open |2 &|Open |1 &|1 &|1 &|
   |    |      |      |      |      |     | 3 |     | 2 | 2 | 2 |
   |----+------+------+------+------+-----+---+-----+---+---+---|
   |2MB |Closed|Closed|Closed|Closed|Open |1 &|Open |1 &|1 &|2 &|
   |    |      |      |      |      |     | 2 |     | 2 | 2 | 3 |
   |----+------+------+------+------+-----+---+-----+---+---+---|
   |4MB | Open | Open | Open | Open |Open |1 &|2 & 3|1 &|1 &|2 &|
   |    |      |      |      |      |     | 2 |     | 2 | 2 | 3 |
   |----+------+------+------+------+-----+---+-----+---+---+---|
   |8MB |Closed|Closed|Closed|Closed|Open |1 &|1 & 2|2 &|1 &|2 &|
   |    |      |      |      |      |     | 2 |     | 3 | 2 | 3 |
   |----+------+------+------+------+-----+---+-----+---+---+---|
   |16MB| Open | Open | Open | Open |2 & 3|1 &|1 & 2|2 &|1 &|2 &|
   |    |      |      |      |      |     | 2 |     | 3 | 2 | 3 |
   |----+------+------+------+------+-----+---+-----+---+---+---|
   |32MB|Closed|Closed|Closed|Closed|1 & 2|1 &|1 & 2|2 &|2 &|2 &|
   |    |      |      |      |      |     | 2 |     | 3 | 3 | 3 |
   |------------------------------------------------------------|
   |Note:Pins designated should be in the closed position.      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Size            |            Bank 0             |
   |----------------------------+-------------------------------|
   |           128KB            |          (16) 8K x 8          |
   +------------------------------------------------------------+