DECISION COMPUTER INTERNATIONAL CO., LTD.
=========================================

   IPCVOICE

   Card Type              Sound card                              
   Chipset                Unidentified                            
   Maximum Onboard Memory 1MB EPROM                               
   I/O Options            Audio out                               
   Data Bus               IPCCPU expansion bus                    

<gopher://bitreich.org/I/th99/i/C-D/53183-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function        | Label |     Function      | Label |
   |------------------------+-------+-------------------+-------|
   | IPCCPU expansion bus   |  P1   | Volume adjustment |  PT1  |
   |------------------------+-------+-------------------+-------|
   | Audio out (see pinout  |  P2   | Speed adjustment  |  PT2  |
   | below)                 |       |                   |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function        | Pin  |      Function       | Pin  |
   |------------------------+------+---------------------+------|
   | Audio line out         |  1   | Speaker out         |  3   |
   |------------------------+------+---------------------+------|
   | Audio line out         |  2   | Ground              |  4   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Setting             | Label |     Position      |
   |--------------------------------+-------+-------------------|
   | Each message is 6553 bytes     |  JP3  | Pins 1 & 2 closed |
   |--------------------------------+-------+-------------------|
   | Each message is 13107 bytes    |  JP3  | Pins 2 & 3 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    EPROM CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Size            |             EPROM             |
   |----------------------------+-------------------------------|
   |            32KB            |          (1) 27C256           |
   |----------------------------+-------------------------------|
   |            64KB            |          (1) 27C512           |
   |----------------------------+-------------------------------|
   |           128KB            |          (1) 27C1001          |
   |----------------------------+-------------------------------|
   |           256KB            |          (1) 27C2001          |
   |----------------------------+-------------------------------|
   |           512KB            |          (1) 27C4001          |
   |----------------------------+-------------------------------|
   |            1MB             |          (1) 27C8001          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 EPROM JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size   |    JP3     |     JP4     |    JP5    |    JP6    |
   |---------+------------+-------------+-----------+-----------|
   |  32KB   |    Open    | Pins 2 & 3  | Pins 2 &  | Pins 2 &  |
   |         |            |   closed    | 3 closed  | 3 closed  |
   |---------+------------+-------------+-----------+-----------|
   |  64KB   |    Open    | Pins 2 & 3  | Pins 2 &  | Pins 2 &  |
   |         |            |   closed    | 3 closed  | 3 closed  |
   |---------+------------+-------------+-----------+-----------|
   |  128KB  |  See user  | Pins 2 & 3  | Pins 2 &  | Pins 2 &  |
   |         |  config.   |   closed    | 3 closed  | 3 closed  |
   |         |   table    |             |           |           |
   |---------+------------+-------------+-----------+-----------|
   |  256KB  |  See user  | Pins 1 & 2  | Pins 2 &  | Pins 2 &  |
   |         |  config.   |   closed    | 3 closed  | 3 closed  |
   |         |   table    |             |           |           |
   |---------+------------+-------------+-----------+-----------|
   |  512KB  |  See user  | Pins 1 & 2  | Pins 1 &  | Pins 2 &  |
   |         |  config.   |   closed    | 2 closed  | 3 closed  |
   |         |   table    |             |           |           |
   |---------+------------+-------------+-----------+-----------|
   |   1MB   |  See user  | Pins 1 & 2  | Pins 1 &  | Pins 1 &  |
   |         |  config.   |   closed    | 2 closed  | 2 closed  |
   |         |   table    |             |           |           |
   |------------------------------------------------------------|
   |      Note: To determine how many messages the IPCVOICE     |
   |      card will hold, divide the size of the chip by the    |
   |      size of each message (determined by JP3). The amount  |
   |      of messages held by 32KB and 64KB versions is         |
   |      unidentified.                                         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   | Setting  |  JP1/A  |  JP1/B  |  JP1/C  |  JP1/D  |  JP1/E  |
   |----------+---------+---------+---------+---------+---------|
   |   90h    | Closed  |  Open   |  Open   |  Open   |  Open   |
   |----------+---------+---------+---------+---------+---------|
   |   A0h    |  Open   | Closed  |  Open   |  Open   |  Open   |
   |----------+---------+---------+---------+---------+---------|
   |   B0h    |  Open   |  Open   | Closed  |  Open   |  Open   |
   |----------+---------+---------+---------+---------+---------|
   |   C0h    |  Open   |  Open   |  Open   | Closed  |  Open   |
   |----------+---------+---------+---------+---------+---------|
   |   E0h    |  Open   |  Open   |  Open   |  Open   | Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CARD NUMBER SELECTION                    |
   |------------------------------------------------------------|
   |  Setting   |   JP2/A   |   JP2/B   |   JP2/C   |   JP2/D   |
   |------------+-----------+-----------+-----------+-----------|
   |     1      |  Closed   |   Open    |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   |     2      |   Open    |  Closed   |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   |     3      |   Open    |   Open    |  Closed   |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   |     4      |   Open    |   Open    |   Open    |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | This card is designed to be used with Decision Computer    |
   | International Co., Ltd.'s IPCCPU board. See this document  |
   | for more information.                                      |
   +------------------------------------------------------------+