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# EVEREX SYSTEMS, INC.
STEP 486e 12 SLOT (EV-18113) REV. E
Processor 80486DX
Processor Speed 25/33MHz
Chip Set C & T
Max. Onboard DRAM None
Cache 256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options External memory card
NPU Options 4167
(IMG) IMG 1
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | EISA setup enabled | J13 | Closed |
|---+---------------------------+---------------+------------|
| | EISA setup bypassed | J13 | Open |
|---+---------------------------+---------------+------------|
| » | Password check enabled | J19 | Closed |
|---+---------------------------+---------------+------------|
| | Password check disabled | J19 | Open |
|---+---------------------------+---------------+------------|
| » | CPU speed select 25MHz | J18 | Closed |
|---+---------------------------+---------------+------------|
| | CPU speed select 33MHz | J18 | Open |
|---+---------------------------+---------------+------------|
| » | BIOS type select 27256 | JP1 | Closed |
|---+---------------------------+---------------+------------|
| | BIOS type select 27512 | JP1 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 | Port 2 |J29/pins 1 & |J29/pins|J29/pins|J29/pins|
| | | 2 | 3 & 4 | 5 & 6 | 7 & 8 |
|----------+--------+-------------+--------+--------+--------|
|»| COM1 | COM2 | Closed | Open | Closed | Open |
|-+--------+--------+-------------+--------+--------+--------|
| | COM1 |Disabled| Closed | Open | Open | Open |
|-+--------+--------+-------------+--------+--------+--------|
| |Disabled| COM2 | Open | Open | Closed | Open |
|-+--------+--------+-------------+--------+--------+--------|
| | COM3 | COM4 | Open | Closed | Open | Closed |
|-+--------+--------+-------------+--------+--------+--------|
| | COM3 |Disabled| Open | Closed | Open | Open |
|-+--------+--------+-------------+--------+--------+--------|
| |Disabled| COM4 | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPTS |
|------------------------------------------------------------|
| Port 1 | J21/pins 1 & | J21/pins 3 | J21/pins | J21/pins |
| | 2 | & 4 | 5 & 6 | 7 & 8 |
|----------+--------------+------------+----------+----------|
| » | IRQ3 | Open | Open | Closed | Open |
|---+------+--------------+------------+----------+----------|
| | IRQ4 | Open | Closed | Open | Open |
|---+------+--------------+------------+----------+----------|
| | IRQ5 | Closed | Open | Open | Open |
|---+------+--------------+------------+----------+----------|
| | IRQ9 | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPTS |
|------------------------------------------------------------|
| Port 2 | J21/pins 9 | J21/pins 11 | J21/pins | J21/pins |
| | & 10 | & 12 | 13 & 14 | 15 & 16 |
|----------+------------+--------------+----------+----------|
| | IRQ3 | Open | Open | Closed | Open |
|---+------+------------+--------------+----------+----------|
| » | IRQ4 | Open | Closed | Open | Open |
|---+------+------------+--------------+----------+----------|
| | IRQ5 | Closed | Open | Open | Open |
|---+------+------------+--------------+----------+----------|
| | IRQ9 | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| LPT | J29/pins 9 & 10 | J29/pins 11 & 12 |
|------------------+--------------------+--------------------|
| » | 1 | Closed | Open |
|---+--------------+--------------------+--------------------|
| | 2 | Open | Closed |
|---+--------------+--------------------+--------------------|
| | Disabled | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPTS |
|------------------------------------------------------------|
| IRQ | J22/pins 1 & 2 | J22/pins 3 & 4 | J22/pins 5 & 6 |
|---------+----------------+----------------+----------------|
| | 5 | Open | Closed | Open |
|---+-----+----------------+----------------+----------------|
| » | 7 | Closed | Open | Open |
|---+-----+----------------+----------------+----------------|
| | 9 | Open | Open | Closed |
+------------------------------------------------------------+
(IMG) IMG 2
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 256K x | (4) 256K x | (4) 256K x | (4) 256K x |
| | 9 | 9 | 9 | 9 |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 10MB | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x | (4) 256K x |
| | | | 9 | 9 |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 34MB | (4) 4M x 9 | (4) 4M x 9 | (4) 256K x | (4) 256K x |
| | | | 9 | 9 |
|------+-------------+-------------+------------+------------|
| 40MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | (4) 1M x 9 |
|------+-------------+-------------+------------+------------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+