DATA TECHNOLOGY CORPORATION
===========================

   DTC2278EB (400523-89A)

   Card Type               Hard drive controller card             
   Hard drives supported   Four IDE(AT) interface drives          
   Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB drives 
   Data-bus                32-bit VESA Local Bus                  
   Size                    Full-length, half-height card          

<gopher://bitreich.org/I/th99/c/C-D/21217-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Function       | Label |       Function       | Label |
   |---------------------+-------+----------------------+-------|
   | 25-pin parallel     |  J1   | 34-pin control cable |  J5   |
   | port - external     |       | connector - floppy   |       |
   |                     |       | drive                |       |
   |---------------------+-------+----------------------+-------|
   | 10-pin serial port  |  J2   | 40-pin IDE(AT)       |  J6   |
   | 2 - internal        |       | secondary interface  |       |
   |                     |       | connector            |       |
   |---------------------+-------+----------------------+-------|
   | 9-pin serial port 1 |  J3   | 40-pin IDE(AT)       |  J7   |
   | - external          |       | primary interface    |       |
   |                     |       | connector            |       |
   |---------------------+-------+----------------------+-------|
   | 16-pin game port -  |  J4   | Drive active LED     |  J8   |
   | internal            |       |                      |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               USER CONFIGURABLE CONNECTIONS                |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Game port enabled              |   W29    |   Closed   |
   |---+--------------------------------+----------+------------|
   |   | Game port disabled             |   W29    |    Open    |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive interface enabled |   W30    | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive interface         |   W30    | Pins 2 & 3 |
   |   | disabled                       |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W22         |        W23         |
   |------------------+--------------------+--------------------|
   |>> | COM1 (3F8h)  | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM2 (2F8h)  | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM3 (3E8h)  | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W20         |        W21         |
   |------------------+--------------------+--------------------|
   |   COM1 (3F8h)    | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |   COM2 (2F8h)    | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   COM4 (2E8h)    | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |     Disabled     | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W18         |        W19         |
   |------------------+--------------------+--------------------|
   |   LPT1 (378h)    | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   LPT2 (278h)    | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   LPT3 (3BCh)    | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     Disabled     | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W15      |     W16      |     W17     |
   |----------------+--------------+--------------+-------------|
   |   |    IRQ3    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |>> |    IRQ4    |     Open     |     Open     |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |    Closed    |     Open     |    Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W12      |     W13      |     W14     |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |     Open     |     Open     |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |    Closed    |     Open     |    Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |          IRQ          |       W10        |       W11       |
   |-----------------------+------------------+-----------------|
   |     |      IRQ5       |      Closed      |      Open       |
   |-----+-----------------+------------------+-----------------|
   |>>   |      IRQ7       |       Open       |     Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIOS ADDRESS SELECTION                   |
   |------------------------------------------------------------|
   |    Address    |       W7        |       W8        |  W24   |
   |---------------+-----------------+-----------------+--------|
   | C8000h-CBFFFh |   Pins 2 & 3    |   Pins 2 & 3    | Closed |
   |               |     closed      |     closed      |        |
   |---------------+-----------------+-----------------+--------|
   | CC000h-CFFFFh |   Pins 2 & 3    |   Pins 1 & 2    | Closed |
   |               |     closed      |     closed      |        |
   |---------------+-----------------+-----------------+--------|
   | D8000h-DBFFFh |   Pins 1 & 2    |   Pins 2 & 3    | Closed |
   |               |     closed      |     closed      |        |
   |---------------+-----------------+-----------------+--------|
   | DC000h-DFFFFh |   Pins 1 & 2    |   Pins 1 & 2    | Closed |
   |               |     closed      |     closed      |        |
   |---------------+-----------------+-----------------+--------|
   |   Disabled    |      Open       |      Open       |  Open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |    Channel     |    W1    |    W2    |    W3    |    W4    |
   |----------------+----------+----------+----------+----------|
   |       1        |  Closed  |   Open   |  Closed  |   Open   |
   |----------------+----------+----------+----------+----------|
   |       3        |   Open   |  Closed  |   Open   |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT MODE SELECTION                |
   |------------------------------------------------------------|
   |      Setting       |      W9       |     W25      |  W31   |
   |--------------------+---------------+--------------+--------|
   | Bidirectional /ECP |  Pins 2 & 3   |  Pins 1 & 2  | Closed |
   |                    |    closed     |    closed    |        |
   |--------------------+---------------+--------------+--------|
   | Bidirectional /EPP |  Pins 1 & 2   |  Pins 2 & 3  |  Open  |
   |                    |    closed     |    closed    |        |
   |--------------------+---------------+--------------+--------|
   |  Uni-directional   |  Pins 2 & 3   |  Pins 2 & 3  |  Open  |
   |                    |    closed     |    closed    |        |
   |--------------------+---------------+--------------+--------|
   |     EPP & ECP      |  Pins 1 & 2   |  Pins 1 & 2  | Closed |
   |                    |    closed     |    closed    |        |
   +------------------------------------------------------------+