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# EVEREX SYSTEMS, INC.
SPEEDARC (VER.1.0)
NIC Type ARCnet
Network Transfer Rate 2.5Mbps
Data Bus 8-bit ISA
Topology Linear Bus
Wiring Type RG-58A/U 50ohm coaxial
Boot ROM Available (location unidentified)
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label |
|-------------------------------+----------------------------|
| RG-58A/U 50ohm coaxial port | CN1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | JP2/6 | JP2/7 | JP2/8 |
|---------------+--------------+--------------+--------------|
| 260-26Fh | On | On | On |
|---------------+--------------+--------------+--------------|
| 290-29Fh | On | On | Off |
|---------------+--------------+--------------+--------------|
| 2E0-2EFh | On | Off | On |
|---------------+--------------+--------------+--------------|
| 2F0-2FFh | On | Off | Off |
|---------------+--------------+--------------+--------------|
| 300-30Fh | Off | On | On |
|---------------+--------------+--------------+--------------|
| 350-35Fh | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 380-38Fh | Off | Off | On |
|---------------+--------------+--------------+--------------|
| 3E0-3EFh | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP1/A | JP1/B | JP1/C | JP1/D | JP1/E |
|---------+----------+---------+---------+---------+---------|
| » | 2 | Open | Open | Open | Open | Closed |
|---+-----+----------+---------+---------+---------+---------|
| | 3 | Open | Open | Open | Closed | Open |
|---+-----+----------+---------+---------+---------+---------|
| | 4 | Open | Open | Closed | Open | Open |
|---+-----+----------+---------+---------+---------+---------|
| | 5 | Open | Closed | Open | Open | Open |
|---+-----+----------+---------+---------+---------+---------|
| | 7 | Closed | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NODE ADDRESS |
|------------------------------------------------------------|
|Node |JP/1 |JP1/2 |JP1/3 |JP1/4 |JP1/5 |JP1/6 |JP1/7 |JP1/8 |
|-----+-----+------+------+------+------+------+------+------|
| 1 | Off | On | On | On | On | On | On | On |
|-----+-----+------+------+------+------+------+------+------|
| 2 | On | Off | On | On | On | On | On | On |
|-----+-----+------+------+------+------+------+------+------|
| 3 | Off | Off | On | On | On | On | On | On |
|-----+-----+------+------+------+------+------+------+------|
| 4 | On | On | Off | On | On | On | On | On |
|-----+-----+------+------+------+------+------+------+------|
| 5 | Off | On | Off | On | On | On | On | On |
|-----+-----+------+------+------+------+------+------+------|
| 251 | Off | Off | On | Off | Off | Off | Off | Off |
|-----+-----+------+------+------+------+------+------+------|
| 252 | On | On | Off | Off | Off | Off | Off | Off |
|-----+-----+------+------+------+------+------+------+------|
| 253 | Off | On | Off | Off | Off | Off | Off | Off |
|-----+-----+------+------+------+------+------+------+------|
| 254 | On | Off | Off | Off | Off | Off | Off | Off |
|-----+-----+------+------+------+------+------+------+------|
| 255 | Off | Off | Off | Off | Off | Off | Off | Off |
|------------------------------------------------------------|
| Note: A total of 255 node address settings are |
| available. The switches are a binary representation of |
| the decimal memory addresses. SW1/8 is the Most |
| Significant Bit and switch SW1/1 is the Least |
| Significant Bit. The switches have the following |
| decimal values: SW1/8=128, SW1/7=64, SW1/6=32, |
| SW1/5=16, SW1/4=8, SW1/3=4, SW1/2=2, SW1/1=1. Turn off |
| the switches and add the values of the switches to |
| obtain the correct memory address. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BOOT ROM CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP1/H |
|---------------------------------+--------------------------|
| » | Disabled | Open |
|----+----------------------------+--------------------------|
| | Enabled | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED TIMEOUTS SELECTION |
|------------------------------------------------------------|
| Response | Idle Time | Reconfiguration | JP1/F | JP1/G |
| Time | | Time | | |
|-----------+-----------+------------------+--------+--------|
| » | 78 | 86 | 840 | Open | Open |
|---+-------+-----------+------------------+--------+--------|
| | 285 | 316 | 1680 | Open | Closed |
|---+-------+-----------+------------------+--------+--------|
| | 563 | 624 | 1680 | Closed | Open |
|---+-------+-----------+------------------+--------+--------|
| | 1130 | 1237 | 1680 | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RAM/PROM ADDRESS SELECTION |
|------------------------------------------------------------|
| RAM Address |PROM Address |JP2/1|JP2/2|JP2/3|JP2/4|JP2/5|
|----------------+-------------+-----+-----+-----+-----+-----|
| | C:0000h - | C:2000h - | On | On | On | On | On |
| | C:07FFh | C:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:0800h - | C:2000h - | On | On | On | On | Off |
| | C:0FFFh | C:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:1000h - | C:2000h - | On | On | On | Off | On |
| | C:17FFh | C:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:1800h - | C:2000h - | On | On | On | Off | Off |
| | C:1FFFh | C:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:4000h - | C:6000h - | On | On | Off | On | On |
| | C:47FFh | C:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:4800h - | C:6000h - | On | On | Off | On | Off |
| | C:4FFFh | C:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:5000h - | C:6000h - | On | On | Off | Off | On |
| | C:57FFh | C:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:5800h - | C:6000h - | On | On | Off | Off | Off |
| | C:5FFFh | C:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:C000h - | C:E000h - | On | Off | On | On | On |
| | C:C7FFh | C:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:C800h - | C:E000h - | On | Off | On | On | Off |
| | C:CFFFh | C:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:D000h - | C:E000h - | On | Off | On | Off | On |
| | C:D7FFh | C:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | C:D800h - | C:E000h - | On | Off | On | Off | Off |
| | C:DFFFh | C:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
|» | D:0000h - | D:2000h - | On | Off | Off | On | On |
| | D:07FFh | D:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:0800h - | D:2000h - | On | Off | Off | On | Off |
| | D:0FFFh | D:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:1000h - | D:2000h - | On | Off | Off | Off | On |
| | D:17FFh | D:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:1800h - | D:2000h - | On | Off | Off | Off | Off |
| | D:1FFFh | D:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:4000h - | D:6000h - | Off | On | On | On | On |
| | D:47FFh | D:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:4800h - | D:6000h - | Off | On | On | On | Off |
| | D:4FFFh | D:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:5000h - | D:6000h - | Off | On | On | Off | On |
| | D:57FFh | D:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:5800h - | D:6000h - | Off | On | On | Off | Off |
| | D:5FFFh | D:7FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:8000h - | D:A000h - | Off | On | Off | On | On |
| | D:87FFh | D:BFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:8800h - | D:A000h - | Off | On | Off | On | Off |
| | D:8FFFh | D:BFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:9000h - | D:A000h - | Off | On | Off | Off | On |
| | D:97FFh | D:BFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:9800h - | D:A000h - | Off | On | Off | Off | Off |
| | D:9FFFh | D:BFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:C000h - | D:E000h - | Off | Off | On | On | On |
| | D:C7FFh | D:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:C800h - | D:E000h - | Off | Off | On | On | Off |
| | D:CFFFh | D:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:D000h - | D:E000h - | Off | Off | On | Off | On |
| | D:D7FFh | D:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | D:D800h - | D:E000h - | Off | Off | On | Off | Off |
| | D:DFFFh | D:FFFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | E:0000h - | E:2000h - | Off | Off | Off | On | On |
| | E:07FFh | E:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | E:0800h - | E:2000h - | Off | Off | Off | On | Off |
| | E:0FFFh | E:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | E:1000h - | E:2000h - | Off | Off | Off | Off | On |
| | E:17FFh | E:3FFFh | | | | | |
|--+-------------+-------------+-----+-----+-----+-----+-----|
| | E:1800h - | E:2000h - | Off | Off | Off | Off | Off |
| | E:1FFFh | E:3FFFh | | | | | |
+------------------------------------------------------------+