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# DATA TECHNOLOGY CORPORATION
DTC2278VL (900085-89B/D)
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 32-bit, VL-bus |
|-------------------+----------------------------------------|
| Size: | Three/quarter-length, half-height card |
|-------------------+----------------------------------------|
| Hard drive | Two IDE (AT) interface drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB or 1.44MB |
| supported: | drives |
+------------------------------------------------------------+
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|------------------------------------------------+-----------|
| 4-pin connector - drive active LED | J1 |
|------------------------------------------------+-----------|
| 40-pin IDE (AT) interface connector - port 1 | J2 |
|------------------------------------------------+-----------|
| 34-pin control cabled connector - floppy drive | J3 |
|------------------------------------------------+-----------|
| Game port | J4 |
|------------------------------------------------+-----------|
| 9-pin serial port 2 - external | J5 |
|------------------------------------------------+-----------|
| 10-pin serial port 1 - internal | J6 |
|------------------------------------------------+-----------|
| 25-pin parallel port | J7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------+----------+---------------|
| » | IDE IRQ14 enabled | W6 | pins 1 & 2 |
| | | | closed |
|---+-----------------------------+----------+---------------|
| | IDE IRQ15 enabled | W6 | pins 2 & 3 |
| | | | closed |
|---+-----------------------------+----------+---------------|
| » | Parallel port is output | W17 | pins 1 & 2 |
| | only | | closed |
|---+-----------------------------+----------+---------------|
| | Parallel port is | W17 | pins 2 & 3 |
| | input/output | | closed |
|---+-----------------------------+----------+---------------|
| » | Game port enabled | W26 | closed |
|---+-----------------------------+----------+---------------|
| | Game port disabled | W26 | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE DATA TRANSFER RATES (FOR 33MHZ VL-BUS PC) |
|------------------------------------------------------------|
| Rate | W1 | W2 | W3 | W4 | W5 |
|-------------+----------+--------+--------+--------+--------|
| » | 3.9MB/s | pins 1 & | pins 2 | pins 2 | pins 2 | pins 1 |
| | | 2 | & 3 | & 3 | & 3 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 3.3MB/s | pins 2 & | pins 2 | pins 1 | pins 2 | pins 1 |
| | | 3 | & 3 | & 2 | & 3 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 3.5MB/s | pins 2 & | pins 1 | pins 2 | pins 2 | pins 1 |
| | | 3 | & 2 | & 3 | & 3 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 3.7MB/s | pins 2 & | pins 1 | pins 1 | pins 2 | pins 1 |
| | | 3 | & 2 | & 2 | & 3 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 4.2MB/s | pins 1 & | pins 2 | pins 1 | pins 2 | pins 1 |
| | | 2 | & 3 | & 2 | & 3 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 4.4MB/s | pins 1 & | pins 1 | pins 2 | pins 2 | pins 1 |
| | | 2 | & 2 | & 3 | & 3 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 4.8MB/s | pins 1 & | pins 1 | pins 1 | pins 2 | pins 1 |
| | | 2 | & 2 | & 2 | & 3 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 5.1MB/s | pins 2 & | pins 2 | pins 2 | pins 1 | pins 1 |
| | | 3 | & 3 | & 3 | & 2 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 5.6MB/s | pins 2 & | pins 2 | pins 1 | pins 1 | pins 1 |
| | | 3 | & 3 | & 2 | & 2 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 6.1MB/s | pins 2 & | pins 1 | pins 2 | pins 1 | pins 1 |
| | | 3 | & 2 | & 3 | & 2 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 6.7MB/s | pins 2 & | pins 1 | pins 1 | pins 1 | pins 1 |
| | | 3 | & 2 | & 2 | & 2 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 7.4MB/s | pins 1 & | pins 2 | pins 2 | pins 1 | pins 1 |
| | | 2 | & 3 | & 3 | & 2 | & 2 |
|---+---------+----------+--------+--------+--------+--------|
| | 8.3MB/s | pins 1 & | pins 1 | pins 1 | pins 1 | pins 1 |
| | | 2 | & 2 | & 2 | & 2 | & 2 |
|------------------------------------------------------------|
| Note:The pins indicated should be closed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE DATA TRANSFER RATES (FOR NON-33MHZ VL-BUS PC) |
|------------------------------------------------------------|
| Rate | W1 | W2 | W3 | W4 | W5 |
|---------+----------+---------+---------+---------+---------|
| 3.3MB/s | pins 1 & | pins 2 | pins 1 | pins 2 | pins 2 |
| | 2 | & 3 | & 2 | & 3 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 3.6MB/s | pins 1 & | pins 1 | pins 2 | pins 2 | pins 2 |
| | 2 | & 2 | & 3 | & 3 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 3.8MB/s | pins 1 & | pins 1 | pins 1 | pins 2 | pins 2 |
| | 2 | & 2 | & 2 | & 3 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 4.2MB/s | pins 2 & | pins 2 | pins 2 | pins 1 | pins 2 |
| | 3 | & 3 | & 3 | & 2 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 4.5MB/s | pins 2 & | pins 2 | pins 1 | pins 1 | pins 2 |
| | 3 | & 3 | & 2 | & 2 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 5.0MB/s | pins 2 & | pins 1 | pins 2 | pins 1 | pins 2 |
| | 3 | & 2 | & 3 | & 2 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 5.6MB/s | pins 2 & | pins 1 | pins 1 | pins 1 | pins 2 |
| | 3 | & 2 | & 2 | & 2 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 6.3MB/s | pins 1 & | pins 2 | pins 2 | pins 1 | pins 2 |
| | 2 | & 3 | & 3 | & 2 | & 3 |
|---------+----------+---------+---------+---------+---------|
| 7.2MB/s | pins 1 & | pins 1 | pins 1 | pins 1 | pins 2 |
| | 2 | & 2 | & 2 | & 2 | & 3 |
|------------------------------------------------------------|
| Note:The pins indicated should be closed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Address | W7 | W10 |
|------------------+--------------------+--------------------|
| » | 3F0h | pins 2 & 3 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | 370h | pins 1& 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | N/A | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE CONFIGURATION |
|------------------------------------------------------------|
| Address | W8 | W9 |
|------------------+--------------------+--------------------|
| » | 1F0h | pins 2 & 3 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | 170h | pins 1& 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | N/A | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
| COM/Address | W11 | W12 |
|------------------+--------------------+--------------------|
| » | COM1/3F8h | pins 1 & 2 closed | pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | COM3/3E8h | pins 2 & 3 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | COM4/2E8h | pins 1& 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | W18 | W19 | W20 |
|-------------------+-------------+-------------+------------|
| » | IRQ4 | closed | open | open |
|---+---------------+-------------+-------------+------------|
| | IRQ3 | open | closed | open |
|---+---------------+-------------+-------------+------------|
| | IRQ5 | open | open | closed |
|---+---------------+-------------+-------------+------------|
| | Disabled | open | open | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
| COM/Address | W13 | W14 |
|------------------+--------------------+--------------------|
| » | COM2/2F8h | pins 1 & 2 closed | pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | COM3/3E8h | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | W21 | W22 | W23 |
|-------------------+-------------+-------------+------------|
| » | IRQ3 | closed | open | open |
|---+---------------+-------------+-------------+------------|
| | IRQ4 | open | closed | open |
|---+---------------+-------------+-------------+------------|
| | IRQ5 | open | open | closed |
|---+---------------+-------------+-------------+------------|
| | Disabled | open | open | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| LPT/Address | W15 | W16 |
|------------------+--------------------+--------------------|
| » | LPT1/378h | pins 2 & 3 closed | pins 1& 2 closed |
|---+--------------+--------------------+--------------------|
| | LPT2/278h | pins 1& 2 closed | pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | LPT3/3BCh | pins 1& 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | W24 | W25 |
|------------------------+-----------------+-----------------|
| » | IRQ7 | closed | open |
|---+--------------------+-----------------+-----------------|
| | IRQ5 | open | closed |
|---+--------------------+-----------------+-----------------|
| | Disabled | open | open |
+------------------------------------------------------------+