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# DATA TECHNOLOGY CORPORATION
DTC2278D (400544-89A)
Card Type Hard drive controller card
Data-bus 32-bit VESA Local Bus
Size Full-length, half-height card
Hard drives supported Four IDE(AT) interface drives
Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB drives
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| Drive active LED | J1 | 16-pin game port - | J5 |
| | | internal | |
|----------------------+-------+---------------------+-------|
| 40-pin IDE(AT) | J2 | 9-pin serial port 1 | J6 |
| primary interface | | - external | |
| connector | | | |
|----------------------+-------+---------------------+-------|
| 40-pin IDE(AT) | J3 | 10-pin serial port | J7 |
| secondary interface | | 2 - internal | |
| connector | | | |
|----------------------+-------+---------------------+-------|
| 34-pin control cable | J4 | 25-pin parallel | J8 |
| connector - floppy | | port - external | |
| drive | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | Floppy drive interface enabled | W2 | Open |
|---+-----------------------------------+----------+---------|
| | Floppy drive interface disabled | W2 | Closed |
|---+-----------------------------------+----------+---------|
| » | Parallel port is uni-directional | W3 | Closed |
|---+-----------------------------------+----------+---------|
| | Parallel port is bi-directional | W3 | Open |
|---+-----------------------------------+----------+---------|
| » | Game port enabled | W4 | Open |
|---+-----------------------------------+----------+---------|
| | Game port disabled | W4 | Closed |
|---+-----------------------------------+----------+---------|
| » | Parallel port address is 378h | W5 | Open |
| | (LPT1) | | |
|---+-----------------------------------+----------+---------|
| | Parallel port address is 278 | W5 | Closed |
| | (LPT2) | | |
|---+-----------------------------------+----------+---------|
| » | Serial port 1 address is 3F8h | W6 | Open |
| | (COM1) | | |
|---+-----------------------------------+----------+---------|
| | Serial port 1 address is 3E8h | W6 | Closed |
| | (COM3) | | |
|---+-----------------------------------+----------+---------|
| » | Serial port 1 enabled | W7 | Open |
|---+-----------------------------------+----------+---------|
| | Serial port 1 disabled | W7 | Closed |
|---+-----------------------------------+----------+---------|
| » | Parallel port enabled | W8 | Open |
|---+-----------------------------------+----------+---------|
| | Parallel port disabled | W8 | Closed |
|---+-----------------------------------+----------+---------|
| » | Serial port 2 address is 2F8h | W9 | Open |
| | (COM2) | | |
|---+-----------------------------------+----------+---------|
| | Serial port 2 address is 2E8h | W9 | Closed |
| | (COM4) | | |
|---+-----------------------------------+----------+---------|
| » | Serial port 2 enabled | W10 | Open |
|---+-----------------------------------+----------+---------|
| | Serial port 2 disabled | W10 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | W11 | W12 | W13 |
|----------------+--------------+--------------+-------------|
| | IRQ3 | Open | Closed | Open |
|---+------------+--------------+--------------+-------------|
| » | IRQ4 | Closed | Open | Open |
|---+------------+--------------+--------------+-------------|
| | IRQ5 | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | W14 | W15 | W16 |
|----------------+--------------+--------------+-------------|
| » | IRQ3 | Closed | Open | Open |
|---+------------+--------------+--------------+-------------|
| | IRQ4 | Open | Closed | Open |
|---+------------+--------------+--------------+-------------|
| | IRQ5 | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | W17 | W18 |
|-----------------------+------------------+-----------------|
| | IRQ5 | Open | Closed |
|-----+-----------------+------------------+-----------------|
| » | IRQ7 | Closed | Open |
+------------------------------------------------------------+