IBM CORPORATION
===============

   OPAL 486SLC2 REV C

   Processor         CX486SLC2                                    
   Processor Speed   50(internal)/66(internal)MHz                 
   Chip Set          IBM                                          
   Max. Onboard DRAM 16MB                                         
   Cache             64/128KB                                     
   BIOS              AMI/MR                                       
   Dimensions        254mm x 218mm                                
   I/O Options       32-bit VESA local bus slots (2)              
   NPU Options       80387SX                                      

<gopher://bitreich.org/I/th99/m/I-L/32196-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Reset switch  |    J1    | Turbo switch         |    J4    |
   |---------------+----------+----------------------+----------|
   | Speaker       |    J2    | External battery     |   J25    |
   |---------------+----------+----------------------+----------|
   | Power LED &   |    J3    | 32-bit VESA local    |  SL1 &   |
   | keylock       |          | bus slots            |   SL2    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP9   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP9   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Password enabled(MR BIOS only)   |  JP10  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Password disabled (MR BIOS only) |  JP10  |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |      512KB       |    (2) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       1MB        |    (2) 256K x 9    |    (2) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       2MB        |     (2) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       4MB        |     (2) 1M x 9     |     (2) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       8MB        |     (2) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       10MB       |     (2) 1M x 9     |     (2) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (2) 4M x 9     |     (2) 4M x 9     |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |            Size            |              JP6              |
   |----------------------------+-------------------------------|
   |            64KB            |       pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |           128KB            |       pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |       Speed        |        JP7        |        JP8        |
   |--------------------+-------------------+-------------------|
   |       50iMHz       |       Open        |      Closed       |
   |--------------------+-------------------+-------------------|
   |       66iMHz       |      Closed       |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BUS SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |           CPU speed           |            JP5             |
   |-------------------------------+----------------------------|
   |            <=33MHz            |            Open            |
   |-------------------------------+----------------------------|
   |            >33MHz             |           Closed           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   VESA ID CONFIGURATION                    |
   |------------------------------------------------------------|
   |   ID    |    JP1     |    JP2     |    JP3     |    JP4    |
   |---------+------------+------------+------------+-----------|
   |   ID0   |    Open    |    Open    |    Open    |  Closed   |
   |---------+------------+------------+------------+-----------|
   |   ID1   |   Closed   |   Closed   |    Open    |  Closed   |
   |---------+------------+------------+------------+-----------|
   |   ID2   |   Closed   |    Open    |   Closed   |  Closed   |
   |---------+------------+------------+------------+-----------|
   |   ID3   |    Open    |   Closed   |   Closed   |  Closed   |
   +------------------------------------------------------------+