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# GSI, INC.
MODEL 2C
Data Bus 16-bit ISA
Card Size Half height, half length
Hard Drives Supported Four IDE(AT) devices
Floppy Drives Supported None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|---------------------+-------+----------------------+-------|
| VESA local bus | J1 | 40-pin secondary | J7 |
| extension module | | IDE(AT) connector | |
|---------------------+-------+----------------------+-------|
| 4-pin DC power out | J5 | 4-pin drive active | J8 |
| | | LED | |
|---------------------+-------+----------------------+-------|
| 40-pin primary | J6 | | |
| IDE(AT) connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| » | Factory configured - do not alter | J4/A | Pins 2 & |
| | | | 3 |
|---+------------------------------------+-------+-----------|
| » | GSI BigaByte support for >4095 | J4/G | Pins 1 & |
| | cylinder drives disabled | | 2 |
|---+------------------------------------+-------+-----------|
| | GSI BigaByte support for >4095 | J4/G | Pins 2 & |
| | cylinder drives enabled | | 3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE(AT) INTERFACE CONFIGURATION |
|------------------------------------------------------------|
| Option | Primary | Secondary | Primary | Secondary |
| | Addr. | Addr. | IRQ | IRQ |
|--------+------------+------------+------------+------------|
| | 1 | 1F0h | 170h | IRQ14 | IRQ15 |
|----+---+------------+------------+------------+------------|
| | 2 | 170h | Disabled | IRQ15 | N/A |
|----+---+------------+------------+------------+------------|
| | 3 | 170h | Disabled | IRQ12 | N/A |
|----+---+------------+------------+------------+------------|
| » | 4 | 170h | 1E8h | IRQ15 | IRQ11 |
|----+---+------------+------------+------------+------------|
| | 5 | 170h | 1E8h | IRQ15 | IRQ12 |
|----+---+------------+------------+------------+------------|
| | 6 | 1E8h | Disabled | IRQ11 | N/A |
|----+---+------------+------------+------------+------------|
| | 7 | 1E8h | Disabled | IRQ12 | N/A |
|----+---+------------+------------+------------+------------|
| | 8 | 1E8h | 168h | IRQ11 | IRQ10 |
|----+---+------------+------------+------------+------------|
| | 9 | 1E8h | 168h | IRQ11 | IRQ12 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE(AT) INTERFACE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Option | J4/B | J4/C | J4/D | J9 |
|--------+------------+------------+------------+------------|
| | 1 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 7 & 8 |
| | | closed | closed | closed | closed |
|----+---+------------+------------+------------+------------|
| | 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 7 & 8 |
| | | closed | closed | closed | closed |
|----+---+------------+------------+------------+------------|
| | 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 5 & 7 |
| | | closed | closed | closed | closed |
|----+---+------------+------------+------------+------------|
| » | 4 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 7 & |
| | | closed | closed | closed | 8, 4 & 6 |
| | | | | | closed |
|----+---+------------+------------+------------+------------|
| | 5 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 7 & |
| | | closed | closed | closed | 8, 5 & 6 |
| | | | | | closed |
|----+---+------------+------------+------------+------------|
| | 6 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 4 & 6 |
| | | closed | closed | closed | closed |
|----+---+------------+------------+------------+------------|
| | 7 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 5 & 6 |
| | | closed | closed | closed | closed |
|----+---+------------+------------+------------+------------|
| | 8 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 4 & |
| | | closed | closed | closed | 6, 1 & 3 |
| | | | | | closed |
|----+---+------------+------------+------------+------------|
| | 9 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 4 & |
| | | closed | closed | closed | 6, 3 & 5 |
| | | | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | J4/E | J4/F |
|------------------+--------------------+--------------------|
| » | C800h | Pins 1 & 2 closed | Pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | CC00h | Pins 2 & 3 closed | Pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | D000h | Pins 1 & 2 closed | Pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | E000h | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+