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# DATA TECHNOLOGY CORPORATION
DTC2278EB (400529-89A)
Card Type Hard drive controller card
Hard Drives Four EIDE drives
supported
Floppy drives Two 360KB, 720KB, 1.2MB, or 1.44MB drives
supported
Data Bus 32-bit VESA Local Bus
Card Size Full-length, half-height card
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Function | Location |
|-------------------+----------+------------------+----------|
| 25-pin parallel | CN2 | 40-pin secondary | J6 |
| port - external | | IDE(AT) | |
| | | connector | |
|-------------------+----------+------------------+----------|
| 10-pin serial | J2 | 40-pin primary | J7 |
| port 2 - internal | | IDE(AT) | |
| | | connector | |
|-------------------+----------+------------------+----------|
| 16-pin game port | J4 | 2-pin connector | J8 |
| | | - drive active | |
| | | LED | |
|-------------------+----------+------------------+----------|
| 34-pin cable | J5 | | |
| connector - | | | |
| floppy drive | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------------+-------+-----------|
| ยป | Game port enabled | W6 | Closed |
|---+------------------------------------+-------+-----------|
| | Game port disabled | W6 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECP DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | W1 | W2 | W3 | W4 |
|----------------+----------+----------+----------+----------|
| 1 | Closed | Open | Closed | Open |
|----------------+----------+----------+----------+----------|
| 3 | Open | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | W19 | W20 |
|------------------+--------------------+--------------------|
| LPT1 (378h) | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| LPT2 (278h) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| LPT3 (3BCh) | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Disabled | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | W23 | W24 |
|------------------+--------------------+--------------------|
| COM1 (3F8h) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| COM3 (3E8h) | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | W21 | W22 |
|------------------+--------------------+--------------------|
| COM2 (2F8h) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| COM4 (2E8h) | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | W18 | W27 | W28 |
|-----------+--------+-------------------+-------------------|
| DC000h | Closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
|-----------+--------+-------------------+-------------------|
| D8000h | Closed | Pins 1 & 2 closed | Pins 2 & 3 closed |
|-----------+--------+-------------------+-------------------|
| CC000h | Closed | Pins 2 & 3 closed | Pins 1 & 2 closed |
|-----------+--------+-------------------+-------------------|
| C8000h | Closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
|-----------+--------+-------------------+-------------------|
| Disabled | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | W12 | W13 | W14 |
|--------------+--------------+---------------+--------------|
| IRQ4 | Open | Open | Closed |
|--------------+--------------+---------------+--------------|
| IRQ3 | Open | Closed | Open |
|--------------+--------------+---------------+--------------|
| IRQ5 | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | W9 | W10 | W11 |
|--------------+--------------+---------------+--------------|
| IRQ3 | Open | Open | Closed |
|--------------+--------------+---------------+--------------|
| IRQ4 | Open | Closed | Open |
|--------------+--------------+---------------+--------------|
| IRQ5 | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | W7 | W8 |
|-------------------+--------------------+-------------------|
| IRQ7 | Open | Closed |
|-------------------+--------------------+-------------------|
| IRQ5 | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT MODE SELECTION |
|------------------------------------------------------------|
| Setting | W15 | W16 |
|--------------------+-------------------+-------------------|
| Uni-directional | Pins 2 & 3 closed | Pins 2 & 3 closed |
|--------------------+-------------------+-------------------|
| ECP & EPP | Pins 1 & 2 closed | Pins 2 & 3 closed |
|--------------------+-------------------+-------------------|
| EPP & | Pins 2 & 3 closed | Pins 1 & 2 closed |
| Bi-Directional | | |
|--------------------+-------------------+-------------------|
| Invalid | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Floppy is automatically enabled when cable is attached |
+------------------------------------------------------------+