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# ZENITH DATA SYSTEMS
SQ-5550/5551
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 16-bit ISA
Topology Star
Wiring Type Shielded/Unshielded twisted pair
Boot ROM Available
IMG IMG 1
+---------------------------------------------------------------+
| DMA CHANNEL |
|---------------------------------------------------------------|
|Channel| JP1A | JP1B | JP1C | JP1D | JP2A | JP2B | JP2C | JP2D |
|-------+------+------+------+------+------+------+------+------|
| |DMA3| Open | Open | Open |Closed| Open | Open | Open |Closed|
|--+----+------+------+------+------+------+------+------+------|
|» |DMA5| Open | Open |Closed| Open | Open | Open |Closed| Open |
|--+----+------+------+------+------+------+------+------+------|
| |DMA6| Open |Closed| Open | Open | Open |Closed| Open | Open |
|--+----+------+------+------+------+------+------+------+------|
| |DMA7|Closed| Open | Open | Open |Closed| Open | Open | Open |
+---------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP3A | JP3B | JP3C | JP3D | JP3E | JP3F |
|------+--------+--------+--------+--------+--------+--------|
|»| 3 | Closed | Open | Open | Open | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 4 | Open | Closed | Open | Open | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 5 | Open | Open | Closed | Open | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 9 | Open | Open | Open | Closed | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 10 | Open | Open | Open | Open | Closed | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 15 | Open | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA I/O MODE |
|------------------------------------------------------------|
| Setting | JP4 |
|--------------------------------+---------------------------|
| » | 8-bit mode | Pins 2 & 3 Closed |
|----------+---------------------+---------------------------|
| | 16-bit mode | Pins 1 & 2 Closed |
|------------------------------------------------------------|
| Note:Card must be installed in a 16-bit slot. This setting |
| controls the size of the data bus used. Memory accesses |
| always use 16-bit words. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BOOT ROM |
|------------------------------------------------------------|
| Setting | JP5 |
|---------------------------------+--------------------------|
| » | Disabled | Open |
|---+-----------------------------+--------------------------|
| | Enabled | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O BASE ADDRESS AND BOOT ROM ADDRESS |
|------------------------------------------------------------|
| Address | ROM Address | JP6 | JP7 |
|----------------+---------------+-------------+-------------|
| » | 300h | C8000h | Closed | Closed |
|---+------------+---------------+-------------+-------------|
| | 320h | CC000h | Closed | Open |
|---+------------+---------------+-------------+-------------|
| | 340h | D0000h | Open | Closed |
|---+------------+---------------+-------------+-------------|
| | 360H | D4000h | Open | Open |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Status | Condition |
|------------+--------------+--------------------------------|
| 1 | On | Data is being transmitted |
|------------+--------------+--------------------------------|
| 1 | Off | Data is not being transmitted |
|------------+--------------+--------------------------------|
| 2 | Bright | Data is being received |
|------------+--------------+--------------------------------|
| 2 | Dim | Link pulses are being received |
|------------+--------------+--------------------------------|
| 2 | Off | Data is not being received |
+------------------------------------------------------------+