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# ATC/UNITRON COMPUTER & COMPUTER PARTS
U3978
Card Type Hard drive controller card
Hard Drives Two IDE drives
supported
Floppy drives Two 360KB, 720KB, 1.2MB, or 1.44MB drives
supported
I/O Options Serial ports (2), parallel port
Data Bus 32-bit VESA Local Bus
Card Size Full-length, full-height card
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Function | Location |
|-------------------+----------+------------------+----------|
| 40-pin primary | J1 | 10-pin serial | J5 |
| IDE(AT) connector | | port 1 - | |
| | | internal | |
|-------------------+----------+------------------+----------|
| 4-pin connector - | J2 | 10-pin serial | J6 |
| drive active LED | | port 2 - | |
| | | internal | |
|-------------------+----------+------------------+----------|
| 34-pin cable | J3 | 25-pin parallel | J7 |
| connector - | | port - external | |
| floppy drive | | | |
|-------------------+----------+------------------+----------|
| 16-pin game port | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Floppy drive interface enabled | JP6 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Floppy drive interface disabled | JP6 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Game port enabled | JP7 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Game port disabled | JP7 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | IDE interface enabled | JP17 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | IDE interface disabled | JP17 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | JP8 | JP9 |
|------------------+--------------------+--------------------|
| LPT2 (278h) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| LPT3 (3BCh) | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | N/A | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | JP12 | JP13 |
|------------------+--------------------+--------------------|
| COM1 (3F8h) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| COM3 (3E8h) | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | N/A | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | JP10 | JP11 |
|------------------+--------------------+--------------------|
| COM2 (2F8h) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| COM4 (2E8h) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Disabled | Pins 2 & 3 closed | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT IRQ SELECTION |
|------------------------------------------------------------|
| IRQ | JP14 |
|----------------------------+-------------------------------|
| 5 | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 7 | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PR4030 SELECTION |
|------------------------------------------------------------|
| Setting | JP1 | JP2 | JP15 |
|---------+---------------+----------------+-----------------|
| ID=000 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | JP3 | JP16 |
|----------------+---------------------+---------------------|
| 26h | Pins 1 & 2 closed | Pins 2 & 3 closed |
|----------------+---------------------+---------------------|
| 2Ah | Pins 2 & 3 closed | Pins 2 & 3 closed |
|----------------+---------------------+---------------------|
| 2Eh | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----------------+---------------------+---------------------|
| 34h | Pins 2 & 3 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+