RELIALOGIC CORPORATION PRIVATE, LTD.
====================================

   R486DX 33 MIBBC

   Processor         80486SX/80487SX/80486DX/80486DX2             
   Processor Speed   25/33/50(internal)/66(internal)MHz           
   Chip Set          UMC                                          
   Max. Onboard DRAM 32MB                                         
   Cache             64/128/256KB                                 
   BIOS              AMI                                          
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       None                                         

<gopher://bitreich.org/I/th99/m/P-R/32029-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J1    | Turbo switch     |    J4    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J2    | Reset switch     |    J5    |
   |-------------------+----------+------------------+----------|
   | Turbo LED         |    J3    | External battery |    J6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select CGA          |  JP5   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP5   |    Open    |
   |   | EGA/VGA                          |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Battery type select internal     |  JP7   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Battery type select external     |  JP7   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP8   |    Open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP9   | pins 1 & 2 |
   |   | alter                            |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |   (1) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       5MB        |    (4) 256K x 9    |    (1) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |    (1) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |    (1) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |    (1) 4M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (2) 16K x 4  |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (2) 16K x 4  |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (2) 16K x 4  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size | W10  | W11  | W12  | W13  | W14  | W15  | W16 | W17 |
   |------+------+------+------+------+------+------+-----+-----|
   | 64KB | Open | Open | Open | Open |1 & 2 |1 & 2 |1 & 2|Open |
   |------+------+------+------+------+------+------+-----+-----|
   |128KB |Closed| Open |Closed| Open |1 & 2 |1 & 2 |2 & 3|1 & 2|
   |------+------+------+------+------+------+------+-----+-----|
   |256KB |Closed|Closed|Closed|Closed|2 & 3 |2 & 3 |1 & 2|2 & 3|
   |------------------------------------------------------------|
   |Note: Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |    Type     |        JP2        |           JP11           |
   |-------------+-------------------+--------------------------|
   |   80486SX   |       Open        |    pins 2 & 3 closed     |
   |-------------+-------------------+--------------------------|
   |   80487SX   | pins 1 & 2 closed | pins 1 & 2, 3 & 4 closed |
   |-------------+-------------------+--------------------------|
   | 80486DX/DX2 | pins 2 & 3 closed | pins 1 & 2, 3 & 4 closed |
   +------------------------------------------------------------+