IPC CORPORATION
===============

   IPC DYNASTY HE/VALUEMAGIC/OFFICEMAGIC/

   GREEN PC (MB486GHE #21)

   Processor      80486SX/80486DX/80486DX2/P23N/Pentium Overdrive 
   Processor      25/33/50(internal)/66(internal)MHz              
   Speed          
   Chip Set       Unidentified                                    
   Max. Onboard   32MB                                            
   DRAM           
   Cache          128/256KB                                       
   BIOS           Unidentified                                    
   Dimensions     254mm x 218mm                                   
   I/O Options    32-bit VESA local bus slots (2)                 
   NPU Options    None                                            

<gopher://bitreich.org/I/th99/m/I-L/32595-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Internal battery |    J1    | Turbo switch      |    J6    |
   |------------------+----------+-------------------+----------|
   | External battery |    J2    | Power LED &       |    J7    |
   |                  |          | keylock           |          |
   |------------------+----------+-------------------+----------|
   | Reset switch     |    J4    | Speaker           |    J8    |
   |------------------+----------+-------------------+----------|
   | Turbo LED        |    J5    | 32-bit VESA local |  SL1 &   |
   |                  |          | bus slots         |   SL2    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Power good signal detect from    |  JP1   | pins 1 & 2 |
   |   | board                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Power good signal detect from    |  JP1   | pins 2 & 3 |
   |   | power supply                     |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | ELBA# enabled                    |  JP2   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | LDEV1# enabled                   |  JP2   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP3   | pins 1 & 2 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP4   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP5   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP6   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | ADS delay select no delay        |  JP7   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | ADS delay select 1-T delay       |  JP7   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPURDY delay select no delay     |  JP8   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPURDY delay select 1-T delay    |  JP8   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | PQFP CPU disabled                |  JP17  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | PQFP CPU enabled                 |  JP17  |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       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     |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |   Size   |   JP9   |  JP10   |  JP11   |  JP12   |  JP13   |
   |----------+---------+---------+---------+---------+---------|
   |  128KB   |  2 & 3  |  2 & 3  |  Open   | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  256KB   |  1 & 2  |  1 & 2  | Closed  | Closed  | Closed  |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |       Type        |       JP14        |        JP15        |
   |-------------------+-------------------+--------------------|
   |  80486SX (PQFP)   |       Open        | pins 3 & 4 closed  |
   |-------------------+-------------------+--------------------|
   |   80486SX (PGA)   |       Open        | pins 2 & 3 closed  |
   |-------------------+-------------------+--------------------|
   |  80486DX (PQFP)   |       Open        | pins 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       |
   |-------------------+-------------------+--------------------|
   |       P23N        | pins 2 & 3 closed | pins 1 & 2, 3 & 4  |
   |                   |                   |       closed       |
   |-------------------+-------------------+--------------------|
   | Pentium Overdrive | pins 2 & 3 closed | pins 1 & 2, 3 & 4  |
   |                   |                   |       closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |           Speed            |             JP18              |
   |----------------------------+-------------------------------|
   |           25MHz            |       pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |           33MHz            |       pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |           50iMHz           |       pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |           66iMHz           |       pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BUS SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |           CPU speed           |            JP16            |
   |-------------------------------+----------------------------|
   |           <= 33MHz            |            Open            |
   |-------------------------------+----------------------------|
   |            > 33MHz            |           Closed           |
   +------------------------------------------------------------+