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# CONTROL CONCEPTS, INC.
HB A8
Data bus: 8-bit, ISA
Size: Half-length, full-height card
Hard drives supported: Up to seven SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
(Floppy support version only)
(IMG) IMG 1
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| JP6 is not used and should remain open. S1/switch 7 is not |
| used and should remain off. |
| |
| Turning on S1/switch 8 will result in error |
+------------------------------------------------------------+
CONTROL CONCEPTS USA
HB A8
. . . continued from previous page
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|------------------------------------------+-----------------|
| 4-pin connector-drive active LED | CN1 |
|------------------------------------------+-----------------|
| 50-pin SCSI connector-internal | CN2 |
|------------------------------------------+-----------------|
| 34-pin data cable connector-floppy drive | CN3 |
|------------------------------------------+-----------------|
| 25-pinSCSI connector-external | CN4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|--------------------------------+--------------+------------|
| » | Floppy drive enabled | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------+--------------+------------|
| | Floppy drive disabled | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------+--------------+------------|
| » | Floppy drive address | JP2 | pins 1 & 2 |
| | 3F0-3F7h | | closed |
|---+----------------------------+--------------+------------|
| | Floppy drive address | JP2 | pins 2 & 3 |
| | 370-377h | | closed |
|---+----------------------------+--------------+------------|
| » | Single spindle speed | JP3 | open |
| | selected | | |
|---+----------------------------+--------------+------------|
| | Dual spindle speed | JP3 | closed |
| | selected | | |
|---+----------------------------+--------------+------------|
| | IRQ3 (Interrupt | JP4/jumper 1 | closed |
| | request-N/A in DOS) | | |
|---+----------------------------+--------------+------------|
| | IRQ4 (Interrupt | JP4/jumper 2 | closed |
| | request-N/A in DOS) | | |
|---+----------------------------+--------------+------------|
| » | IRQ5 (Interrupt | JP4/jumper 3 | closed |
| | request-N/A in DOS) | | |
|---+----------------------------+--------------+------------|
| | IRQ7 (Interrupt | JP4/jumper 4 | closed |
| | request-N/A in DOS) | | |
|---+----------------------------+--------------+------------|
| » | Precompensation value is | JP5 | open |
| | 125ns | | |
|---+----------------------------+--------------+------------|
| | Precompensation value is | JP5 | closed |
| | 185ns | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS |
|------------------------------------------------------------|
| Address | S1/switch 1 | S1/switch 2 | S1/switch 3 |
|---------------+--------------+--------------+--------------|
| C8000-CBE80h | off | on | on |
|---------------+--------------+--------------+--------------|
| E0000-E3E80h | on | off | on |
|---------------+--------------+--------------+--------------|
| DC000-DFE80h | off | off | on |
|---------------+--------------+--------------+--------------|
| D8000-DBE80h | on | on | off |
|---------------+--------------+--------------+--------------|
| D4000-D7E80h | off | on | off |
|---------------+--------------+--------------+--------------|
| D0000-D3E80h | on | off | off |
|---------------+--------------+--------------+--------------|
| CC000-CFE80h | off | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ADDRESS |
|------------------------------------------------------------|
| SCSI ID # | S1/switch 4 | S1/switch 5 | S1/switch 6 |
|-------------+---------------+---------------+--------------|
| » | 7 | off | off | off |
|-----+-------+---------------+---------------+--------------|
| | 6 | on | off | off |
|-----+-------+---------------+---------------+--------------|
| | 5 | off | on | off |
|-----+-------+---------------+---------------+--------------|
| | 4 | on | on | off |
|-----+-------+---------------+---------------+--------------|
| | 3 | off | off | on |
|-----+-------+---------------+---------------+--------------|
| | 2 | on | off | on |
|-----+-------+---------------+---------------+--------------|
| | 1 | off | on | on |
|-----+-------+---------------+---------------+--------------|
| | 0 | on | on | on |
+------------------------------------------------------------+