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# ADAPTEC, INC.
ACB-2072
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 8-bit, ISA |
|--------------------------+---------------------------------|
| Size: | Half-length, full-height card |
|--------------------------+---------------------------------|
| Hard drives supported: | Two RLL ST506 drives |
|--------------------------+---------------------------------|
| Floppy drives supported: | None |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------+----------------|
| 34-pin control cable connector-hard drive | J1 |
|-------------------------------------------+----------------|
| 20-pin data cable connector-drive 0 | J2 |
|-------------------------------------------+----------------|
| 20-pin data cable connector-drive 1 | J3 |
|-------------------------------------------+----------------|
| 4-pin connector-DC power | J4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | BIOS enabled | BD | open |
|---+-----------------------------------+----------+---------|
| | BIOS disabled | BD | closed |
|---+-----------------------------------+----------+---------|
| » | I/O port address is 320h | 324 | open |
|---+-----------------------------------+----------+---------|
| | I/O port address is 324h | 324 | closed |
|---+-----------------------------------+----------+---------|
| » | Drive 0 is defined with Jumpers | AB | open |
| | MN & OP | | |
|---+-----------------------------------+----------+---------|
| | Drive 0 is a Syquest drive | AB | closed |
|---+-----------------------------------+----------+---------|
| » | Drive 1 is defined with Jumpers | CD | open |
| | QR & ST | | |
|---+-----------------------------------+----------+---------|
| | Drive 1 is a Syquest drive | CD | closed |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | EF | open |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | GH | open |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | IJ | open |
|---+-----------------------------------+----------+---------|
| » | Normal Operation | KL | open |
|---+-----------------------------------+----------+---------|
| | Self-diagnostics enabled | KL | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS |
|------------------------------------------------------------|
| Select | Jumper WX | Jumper UV |
|--------------------+-------------------+-------------------|
| » | C800h | open | open |
|---+----------------+-------------------+-------------------|
| | CA00h | open | closed |
|---+----------------+-------------------+-------------------|
| | F800h | closed | open |
|---+----------------+-------------------+-------------------|
| | CC00h | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS DRIVE TYPE TABLE |
|------------------------------------------------------------|
| Table | Hds | Cyls | RLL Cap. | Jumper MN | Jumper OP- |
| # | | | | Drive 0 | Drive 0 |
| | | | | | |
| | | | | Jumper QR- | Jumper ST- |
| | | | | Drive 1 | Drive 1 |
|-------+-----+------+----------+---------------+------------|
| 0 | 4 | 612 | 32.74MB | closed | closed |
|-------+-----+------+----------+---------------+------------|
| 1 | 2 | 612 | 16.29MB | closed | open |
|-------+-----+------+----------+---------------+------------|
| 2 | 5 | 981 | 65.29MB | open | closed |
|-------+-----+------+----------+---------------+------------|
| 3 | 4 | 615 | 32.58MB | open | open |
+------------------------------------------------------------+