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# UNIDENTIFIED
PRIME 2C MKIII
Card Type Hard drive controller
Hard Drives Two IDE (AT) drives
supported
Floppy drives Two 360KB, 720KB, 1.2MB, or 1.44MB drives
supported
Data Bus 16-bit ISA
Card Size Half-length, half-height
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| 16-pin game port | CON1 | 10-pin serial port | CON5 |
| | | 2 - internal | |
|----------------------+-------+---------------------+-------|
| 10-pin serial port 1 | CON2 | 40-pin IDE(AT) | CON6 |
| - internal | | connector | |
|----------------------+-------+---------------------+-------|
| 25-pin parallel port | CON3 | Drive active LED | CON7 |
| - external | | | |
|----------------------+-------+---------------------+-------|
| 34-pin cable | CON4 | 9-pin serial port - | CON8 |
| connector - floppy | | external | |
| drive | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------+-------+------------------|
| Floppy drive interface enabled | J1 | Pins 1 & 2 |
| | | closed |
|---------------------------------+-------+------------------|
| Floppy drive interface disabled | J1 | Pins 2 & 3 |
| | | closed |
|---------------------------------+-------+------------------|
| Primary floppy drive enabled | J2 | Pins 1 & 2 |
| | | closed |
|---------------------------------+-------+------------------|
| Secondary floppy drive disabled | J2 | Pins 2 & 3 |
| | | closed |
|---------------------------------+-------+------------------|
| IDE(AT) interface enabled | J3 | Pins 1 & 2 |
| | | closed |
|---------------------------------+-------+------------------|
| IDE(AT) interface disabled | J3 | Pins 2 & 3 |
| | | closed |
|---------------------------------+-------+------------------|
| Primary IDE drive enabled | J4 | Pins 1 & 2 |
| | | closed |
|---------------------------------+-------+------------------|
| Secondary IDE drive disabled | J4 | Pins 2 & 3 |
| | | closed |
|---------------------------------+-------+------------------|
| Game port enabled | J11 | Pins 1 & 2 |
| | | closed |
|---------------------------------+-------+------------------|
| Game port disabled | J11 | Pins 2 & 3 |
| | | closed |
|---------------------------------+-------+------------------|
| PD0-PD7 output enabled | J16 | Pins 1 & 2 |
| | | closed |
|---------------------------------+-------+------------------|
| PD0-PD7 output disabled | J16 | Pins 2 & 3 |
| | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | J9 | J10 |
|------------------+--------------------+--------------------|
| LPT1 (378h) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| LPT2 (278h) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Disabled | Pins 2 & 3 closed | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | J5 | J6 |
|------------------+--------------------+--------------------|
| COM1 (3F8h) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| COM3 (3E8h) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Disabled | Pins 2 & 3 closed | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | J7 | J8 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J12/pins 1 & | J13/pins 1 | J14/pins 1 | J15/pins 1 |
| | 2 | & 2 | & 2 | & 2 |
|------+--------------+------------+------------+------------|
| IRQ3 | Open | Closed | Open | Open |
|------+--------------+------------+------------+------------|
| IRQ4 | Open | Open | Closed | Open |
|------+--------------+------------+------------+------------|
| IRQ5 | Open | Open | Open | Closed |
|------+--------------+------------+------------+------------|
| IRQ9 | Closed | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J12/pins 2 & | J13/pins 2 | J14/pins 2 | J15/pins 2 |
| | 3 | & 3 | & 3 | & 3 |
|------+--------------+------------+------------+------------|
| IRQ3 | Open | Closed | Open | Open |
|------+--------------+------------+------------+------------|
| IRQ4 | Open | Open | Closed | Open |
|------+--------------+------------+------------+------------|
| IRQ5 | Open | Open | Open | Closed |
|------+--------------+------------+------------+------------|
| IRQ9 | Closed | Open | Open | Open |
+------------------------------------------------------------+