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

   PS/2 MODEL 25 TYPE 1

   Processor        8086                                          
   Processor Speed  8MHz                                          
   Chip Set         None                                          
   Max. Onboard     640KB                                         
   DRAM             
   Cache            None                                          
   BIOS             IBM                                           
   Dimensions       355mm x 304mm                                 
   I/O Options      Serial port, parallel port, pointing device   
                    connector, video port, IDE interface, floppy  
                    drive interface, earphone connector           
   NPU Options      8087                                          

<gopher://bitreich.org/I/th99/m/I-L/30127-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose         | Location | Purpose            | Location |
   |-----------------+----------+--------------------+----------|
   | Pointing device |    J1    | Fan                |    J8    |
   |-----------------+----------+--------------------+----------|
   | Keyboard        |    J2    | Keylock            |   J10    |
   |-----------------+----------+--------------------+----------|
   | Parallel port   |    J3    | IDE interface      |   J11    |
   |-----------------+----------+--------------------+----------|
   | Video port      |    J4    | Floppy drive       |   J12    |
   |                 |          | interface          |          |
   |-----------------+----------+--------------------+----------|
   | Serial port     |    J5    | Earphone connector |   J13    |
   |-----------------+----------+--------------------+----------|
   | Riser card      |    J6    |                    |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     | Parity (P-1)  |
   |------------+---------------+---------------+---------------|
   |   512KB    | (2) 256K x 9  |     NONE      |     NONE      |
   |------------+---------------+---------------+---------------|
   |   640KB    | (2) 256K x 9  |   (4) 4464    |   (2) 4164    |
   +------------------------------------------------------------+