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

   R486 SX25MBC, R486 DX33MBC, R486 DX50MBC, R486 DX2-50MBC, R486
   DX2-66MBC

   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       4167                                         

<gopher://bitreich.org/I/th99/m/P-R/31987-1.png>
   

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

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Jumper | Position |
   |----------------------------------------+--------+----------|
   |>> | Battery type select - internal     |  W22   |  Closed  |
   |---+------------------------------------+--------+----------|
   |   | Battery type select - external     |  W22   |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | Monitor type select                |  W18   |   Open   |
   |   | monochrome/EGA/VGA                 |        |          |
   |---+------------------------------------+--------+----------|
   |   | Monitor type select CGA            |  W18   |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |     A      |     B      |      C       |     D      |
   |------+------------+------------+--------------+------------|
   | 1MB  | (4) 256K x |    NONE    |     NONE     |    NONE    |
   |      |     9      |            |              |            |
   |------+------------+------------+--------------+------------|
   | 2MB  | (4) 256K x | (4) 256K x |     NONE     |    NONE    |
   |      |     9      |     9      |              |            |
   |------+------------+------------+--------------+------------|
   | 3MB  | (4) 256K x | (4) 256K x |  (1) 256K x  |    NONE    |
   |      |     9      |     9      |      36      |            |
   |------+------------+------------+--------------+------------|
   | 4MB  | (4) 256K x | (4) 256K x |  (1) 256K x  | (1) 256K x |
   |      |     9      |     9      |      36      |     36     |
   |------+------------+------------+--------------+------------|
   | 4MB  | (4) 1M x 9 |    NONE    |     NONE     |    NONE    |
   |------+------------+------------+--------------+------------|
   | 5MB  | (4) 256K x | (4) 1M x 9 |     NONE     |    NONE    |
   |      |     9      |            |              |            |
   |------+------------+------------+--------------+------------|
   | 6MB  | (4) 256K x | (4) 256K x | (1) 1M x 36  |    NONE    |
   |      |     9      |     9      |              |            |
   |------+------------+------------+--------------+------------|
   | 8MB  | (4) 1M x 9 | (4) 1M x 9 |     NONE     |    NONE    |
   |------+------------+------------+--------------+------------|
   | 9MB  | (4) 256K x | (4) 1M x 9 | (1) 1M x 36  |    NONE    |
   |      |     9      |            |              |            |
   |------+------------+------------+--------------+------------|
   | 10MB | (4) 256K x | (4) 256K x | (1) 1M x 36  |  (1) 1M x  |
   |      |     9      |     9      |              |     36     |
   |------+------------+------------+--------------+------------|
   | 12MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x 36  |    NONE    |
   |------+------------+------------+--------------+------------|
   | 16MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x 36  | (4) 1M x 9 |
   |------+------------+------------+--------------+------------|
   | 16MB | (4) 4M x 9 |    NONE    |     NONE     |    NONE    |
   |------+------------+------------+--------------+------------|
   | 20MB | (4) 1M x 9 | (4) 4M x 9 |     NONE     |    NONE    |
   |------+------------+------------+--------------+------------|
   | 24MB | (4) 1M x 9 | (4) 4M x 9 | (1) 1M x 36  |    NONE    |
   |------+------------+------------+--------------+------------|
   | 32MB | (4) 4M x 9 | (4) 4M x 9 |     NONE     |    NONE    |
   |------+------------+------------+--------------+------------|
   | 40MB | (4) 4M x 9 | (4) 4M x 9 | (1) 1M x 36  |  (1) 1M x  |
   |      |            |            |              |     36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |          Bank          |  W12   |  W13   |  W15   |  W16   |
   |------------------------+--------+--------+--------+--------|
   |  Bank 0 = A, Bank 1 =  | pins 1 | pins 1 | pins 1 | pins 1 |
   | B, Bank 2 = C, Bank 3  |  & 2   |  & 2   |  & 2   |  & 2   |
   |          = D           |        |        |        |        |
   |------------------------+--------+--------+--------+--------|
   |  Bank 0 = C, Bank 1 =  | pins 2 | pins 2 | pins 2 | pins 2 |
   | D, Bank 2 = A, Bank 3  |  & 3   |  & 3   |  & 3   |  & 3   |
   |          = B           |        |        |        |        |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |    TAG     | U10 (Dirty |
   |       |             |            |            |    Bit)    |
   |-------+-------------+------------+------------+------------|
   | 64KB  | (4) 8K x 8  | (4) 8K x 8 | (1) 8K x 8 | (1) 16K x  |
   |       |             |            |            |     4      |
   |-------+-------------+------------+------------+------------|
   | 128KB | (4) 32K x 8 |    NONE    | (1) 8K x 8 | (1) 16K x  |
   |       |             |            |            |     4      |
   |-------+-------------+------------+------------+------------|
   | 256KB | (4) 32K x 8 | (4) 32K x  | (1) 32K x  | (1) 16K x  |
   |       |             |     8      |     8      |     4      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size |  W2  |  W3  | W4  | W5  |  W6  |  W7  |  W8  |  W9  |
   |------+------+------+-----+-----+------+------+------+------|
   | 64KB |1 & 2 |1 & 2 |Open |1 & 2| Open | Open | Open | Open |
   |------+------+------+-----+-----+------+------+------+------|
   |128KB |2 & 3 |1 & 2 |1 & 2|2 & 3|Closed| Open | Open |Closed|
   |------+------+------+-----+-----+------+------+------+------|
   |256KB |2 & 3 |2 & 3 |2 & 3|1 & 2|Closed|Closed|Closed|Closed|
   |------------------------------------------------------------|
   |Note:Pins designated should be in the closed position.      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |    Type    |        W10         |           W11            |
   |------------+--------------------+--------------------------|
   |  80486SX   |        Open        |    pins 2 & 3 closed     |
   |------------+--------------------+--------------------------|
   |  80487SX   | pins 2 & 3 closed  | pins 1 & 2, 3 & 4 closed |
   |------------+--------------------+--------------------------|
   |  80486DX   | pins 1 & 2 closed  | pins 1 & 2, 3 & 4 closed |
   |------------+--------------------+--------------------------|
   |  80486DX2  | pins 1 & 2 closed  | pins 1 & 2, 3 & 4 closed |
   +------------------------------------------------------------+