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# ADVANCED STORAGE CONCEPTS
ASC-88
Card Type Hard drive controller card
Hard Drives supported Up to 7 SCSI devices
Floppy drives supported None
Data Bus 8-bit ISA
Card Size Quarter-length, full-height card
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Function | Location |
|------------------------+----------+-------------+----------|
| 50-pin SCSI connector | CN1 | Terminating | RN1-RN3 |
| - external | | resistors | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|------------------------------------+----------+------------|
| ยป | Power to external pull-ups | BUS-PWR | Pins 1 & 2 |
| | disabled | | closed |
|---+--------------------------------+----------+------------|
| | +5V power to external pull-ups | BUS-PWR | Pins 3 & 4 |
| | enabled | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SEGMENT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | A16 | A15 | A14 |
|------------+----------------+---------------+--------------|
| C000h | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| C400h | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| C800h | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| CC00h | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| D000h | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| D400h | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| D800h | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| DC00h | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
|------------------------------------------------------------|
| Note: |
| |
| A total of 8 segment address settings are available. The |
| settings are a binary representation of the hexidecimal |
| segment addresses. A16 is the Most Significant Bit and |
| switch A14 is the Least Significant Bit. The jumpers have |
| the following decimal values: A16=1000h, A15=800h, and |
| A14=400h. Turn off the jumpers by closing pins 1 & 2 and |
| turn on the jumpers by closing pins 2 & 3. Add the values |
| of the jumpers with pins 2 & 3 closed to obtain the |
| correct memory address. (Pins 1 & 2 = Off, Pins 2 & 3 = |
| On.) |
+------------------------------------------------------------+