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       # IBM CORPORATION
       
          ENHANCED MEMORY EXPANSION ADAPTER
       
          Card Type       Multi I/O card                                 
          Maximum Onboard 15.5MB DRAM                                    
          Memory          
          I/O Options     Serial port, parallel port, 32-pin SIMM memory 
                          slots (12)                                     
          Data Bus        16-bit ISA                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |     Function     | Location |     Function      | Location |
          |------------------+----------+-------------------+----------|
          | Serial port      |   CN1    | Parallel port     |   CN2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |   512KB    | (2) 256KB x 9 |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |    1MB     | (2) 256KB x 9 | (2) 256KB x 9 |     None      |
          |------------+---------------+---------------+---------------|
          |    1MB     | (2) 512KB x 9 |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |   1.5MB    | (2) 256KB x 9 | (2) 256KB x 9 | (2) 256KB x 9 |
          |------------+---------------+---------------+---------------|
          |    2MB     | (2) 256KB x 9 | (2) 256KB x 9 | (2) 256KB x 9 |
          |------------+---------------+---------------+---------------|
          |    2MB     | (2) 512KB x 9 | (2) 512KB x 9 |     None      |
          |------------+---------------+---------------+---------------|
          |    2MB     |  (2) 1MB x 9  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |   2.5MB    | (2) 256KB x 9 | (2) 512KB x 9 | (2) 512KB x 9 |
          |------------+---------------+---------------+---------------|
          |    3MB     | (2) 256KB x 9 | (2) 256KB x 9 | (2) 256KB x 9 |
          |------------+---------------+---------------+---------------|
          |    3MB     | (2) 512KB x 9 | (2) 512KB x 9 | (2) 512KB x 9 |
          |------------+---------------+---------------+---------------|
          |   3.5MB    | (2) 256KB x 9 | (2) 512KB x 9 | (2) 512KB x 9 |
          |------------+---------------+---------------+---------------|
          |    4MB     | (2) 256KB x 9 | (2) 256KB x 9 | (2) 256KB x 9 |
          |------------+---------------+---------------+---------------|
          |    4MB     |  (2) 1MB x 9  |  (2) 1MB x 9  |     None      |
          |------------+---------------+---------------+---------------|
          |   4.5MB    | (2) 256KB x 9 | (2) 512KB x 9 | (2) 512KB x 9 |
          |------------+---------------+---------------+---------------|
          |    6MB     | (2) 256KB x 9 | (2) 256KB x 9 | (2) 512KB x 9 |
          |------------+---------------+---------------+---------------|
          |   6.5MB    | (2) 256KB x 9 | (2) 512KB x 9 | (2) 512KB x 9 |
          |------------+---------------+---------------+---------------|
          |    7MB     | (2) 512KB x 9 | (2) 512KB x 9 | 2) 512KB x 9  |
          |------------+---------------+---------------+---------------|
          |    14MB    |  (2) 1MB x 9  |  (2) 1MB x 9  |  (2) 1MB x 9  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                DRAM CONFIGURATION (CONT’D)                 |
          |------------------------------------------------------------|
          |  Size   |    Bank 3    |  Bank 4   |  Bank 5   |  Bank 6   |
          |---------+--------------+-----------+-----------+-----------|
          |  512KB  |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |   1MB   |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |   1MB   |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |  1.5MB  |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |   2MB   | (2) 256KBx9  |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |   2MB   |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |   2MB   |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |  2.5MB  |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |   3MB   | (2) 256KB x  | 256KB x 9 | 256KB x 9 |   None    |
          |         |      9       |           |           |           |
          |---------+--------------+-----------+-----------+-----------|
          |   3MB   |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |  3.5MB  | (2) 512KB x  |   None    |   None    |   None    |
          |         |      9       |           |           |           |
          |---------+--------------+-----------+-----------+-----------|
          |   4MB   | (2) 256KB x  | (2) 256KB | (2) 256KB | (2) 512KB |
          |         |      9       |    x 9    |    x 9    |    x 9    |
          |---------+--------------+-----------+-----------+-----------|
          |   4MB   |     None     |   None    |   None    |   None    |
          |---------+--------------+-----------+-----------+-----------|
          |  4.5MB  | (2) 512KB x  | (2) 512KB |   None    |   None    |
          |         |      9       |    x 9    |           |           |
          |---------+--------------+-----------+-----------+-----------|
          |   6MB   | (2) 512KB x  | (2) 512KB | (2) 512KB | (2) 512KB |
          |         |      9       |    x 9    |    x 9    |    x 9    |
          |---------+--------------+-----------+-----------+-----------|
          |  6.5MB  | (2) 512KB x  | (2) 512KB | (2) 512KB | (2) 512KB |
          |         |      9       |    x 9    |    x 9    |    x 9    |
          |---------+--------------+-----------+-----------+-----------|
          |   7MB   | (2) 512KB x  | (2) 512KB | (2) 512KB | (2) 512KB |
          |         |      9       |    x 9    |    x 9    |    x 9    |
          |---------+--------------+-----------+-----------+-----------|
          |  14MB   | (2) 1MB x 9  | (2) 1MB x | (2) 1MB x | (2) 1MB x |
          |         |              |     9     |     9     |     9     |
          |------------------------------------------------------------|
          | Note: If you are installing a mix of 256KB and 512KB       |
          | SIMM’s, then you must install the 256KB SIMM’s first,      |
          | starting at BANK 0.                                        |
          |                                                            |
          | When you install 1MB SIMM modules on the board, you must   |
          | only use 1MB SIMM modules throughout the board.            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               EXPANSION MEMORY CONFIGURATION               |
          |------------------------------------------------------------|
          |   Size   |  SW 1   |  SW 2   |  SW 3   |  SW 4   |  SW 5   |
          |----------+---------+---------+---------+---------+---------|
          |   1MB    |   Off   |   Off   |   Off   |   On    |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  1.5MB   |   Off   |   Off   |   Off   |   On    |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   2MB    |   Off   |   Off   |   On    |   Off   |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  2.5MB   |   Off   |   Off   |   On    |   Off   |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   3MB    |   Off   |   Off   |   On    |   On    |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  3.5MB   |   Off   |   Off   |   On    |   On    |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   4MB    |   Off   |   On    |   Off   |   Off   |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  4.5MB   |   Off   |   On    |   Off   |   Off   |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   5MB    |   Off   |   On    |   Off   |   On    |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  5.5MB   |   Off   |   On    |   Off   |   On    |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   6MB    |   Off   |   On    |   On    |   Off   |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  6.5MB   |   Off   |   On    |   On    |   Off   |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   7MB    |   Off   |   On    |   On    |   On    |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  7.5MB   |   Off   |   On    |   On    |   On    |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   8MB    |   On    |   Off   |   Off   |   Off   |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  8.5MB   |   On    |   Off   |   Off   |   Off   |   On    |
          |----------+---------+---------+---------+---------+---------|
          |   9MB    |   On    |   Off   |   Off   |   On    |   Off   |
          |----------+---------+---------+---------+---------+---------|
          |  9.5MB   |   On    |   Off   |   Off   |   On    |   On    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          EXPANSION MEMORY CONFIGURATION (CONT’D)           |
          |------------------------------------------------------------|
          |     Size      |  SW1   |  SW2   |  SW3   |  SW4   |  SW5   |
          |---------------+--------+--------+--------+--------+--------|
          |     10MB      |   On   |  Off   |   On   |  Off   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |    10.5MB     |   On   |  Off   |   On   |  Off   |   On   |
          |---------------+--------+--------+--------+--------+--------|
          |     11MB      |   On   |  Off   |   On   |   On   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |    11.5MB     |   On   |  Off   |   On   |   On   |   On   |
          |---------------+--------+--------+--------+--------+--------|
          |     12MB      |   On   |   On   |  Off   |  Off   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |    12.5MB     |   On   |   On   |  Off   |  Off   |   On   |
          |---------------+--------+--------+--------+--------+--------|
          |     13MB      |   On   |   On   |  Off   |   On   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |    13.5MB     |   On   |   On   |  Off   |   On   |   On   |
          |---------------+--------+--------+--------+--------+--------|
          |     14MB      |   On   |   On   |   On   |  Off   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |    14.5MB     |   On   |   On   |   On   |  Off   |   On   |
          |---------------+--------+--------+--------+--------+--------|
          |     15MB      |   On   |   On   |   On   |   On   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |    15.5MB     |   On   |   On   |   On   |   On   |   On   |
          |------------------------------------------------------------|
          | Note: If you are adding base memory, then switches 1-5     |
          | should specify a 1MB starting address.                     |
          |                                                            |
          | If there is already expansion memory installed, the        |
          | starting address of the adapter must follow the last       |
          | address of the existing memory.                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE MEMORY CONFIGURATION                  |
          |------------------------------------------------------------|
          |          Function          |     SW1/6     |     SW1/7     |
          |----------------------------+---------------+---------------|
          | Base memory address        |      On       |      Off      |
          | selection (256KB)          |               |               |
          |----------------------------+---------------+---------------|
          | Base memory address        |      Off      |      On       |
          | selection (512KB)          |               |               |
          |----------------------------+---------------+---------------|
          | Base memory address        |      Off      |      Off      |
          | selection (640KB)          |               |               |
          |------------------------------------------------------------|
          | Note: If you have 640KB of base memory, the switch         |
          | settings depend on the amount of expansion memory you have |
          | installed.                                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              PARALLEL PORT ADDRESS SELECTION               |
          |------------------------------------------------------------|
          |      Setting       |    Label    |        Position         |
          |--------------------+-------------+-------------------------|
          |    LPT1 (378h)     |     JN2     |    Pins 1 & 2, 3 & 4    |
          |                    |             |         closed          |
          |--------------------+-------------+-------------------------|
          |    LPT2 (278h)     |     JN2     |    Pins 5 & 6, 7 & 8    |
          |                    |             |         closed          |
          |------------------------------------------------------------|
          | Note: 4-pin jumper module needs to be rotated 180 degrees  |
          | to set either LPT1 or LPT2.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              SERIAL PORT 1 ADDRESS SELECTION               |
          |------------------------------------------------------------|
          |      Setting       |    Label    |        Position         |
          |--------------------+-------------+-------------------------|
          |    COM1 (3F8h)     |     JN1     |    Pins 1 & 2, 3 & 4    |
          |                    |             |         closed          |
          |--------------------+-------------+-------------------------|
          |    COM2 (2F8h)     |     JN1     |    Pins 5 & 6, 7 & 8    |
          |                    |             |         closed          |
          |------------------------------------------------------------|
          | Note: 4-pin jumper module needs to be rotated 180 degrees  |
          | to set either COM1 or COM2.                                |
          +------------------------------------------------------------+