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# EVEREX SYSTEMS, INC.
STEP 486
Processor 80486SX
Processor Speed 25/33MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 32MB (on external memory card)
Memory
Maximum Video None
Memory
Cache Unidentified
BIOS Unidentified
Dimensions 355mm x 304mm
I/O Options External memory card, parallel port, serial
ports (2)
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Parallel port | CN1 | Serial port 2 | CN3 |
|---------------+----------+----------------------+----------|
| Serial port 1 | CN2 | External memory card | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Factory configured - do not alter | JP3 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP6 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP10 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP11 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP12 | Open |
+------------------------------------------------------------+
+----------------------------------------------+
| CACHE CONFIGURATION |
|----------------------------------------------|
| Note: The size of the cache is unidentified. |
+----------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J2 | J3 |
|----------+--------------------------+----------------------|
| IRQ3 | Pins 3 & 4 closed | Pins 3 & 4 closed |
|----------+--------------------------+----------------------|
| IRQ4 | Pins 5 & 6 closed | Pins 5 & 6 closed |
|----------+--------------------------+----------------------|
| IRQ5 | Pins 7 & 8 closed | Pins 7 & 8 closed |
|----------+--------------------------+----------------------|
| IRQ9 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------------------------------------------------|
| Note: Port 1 interrupts are set by one jumper and |
| Port 2 interrupts are set by the other jumper. The |
| correspondence between ports and jumpers is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J1 |
|----------------------------+-------------------------------|
| IRQ5 | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| IRQ7 | Pins 5 & 6 closed |
|----------------------------+-------------------------------|
| IRQ9 | Pins 1 & 2 closed |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+--------------+------------+------------+------------|
| 4MB | (4) 256K x 9 | (4) 256K x | (4) 256K x | (4) 256K x |
| | | 9 | 9 | 9 |
|------+--------------+------------+------------+------------|
| 4MB | (4) 1M x 9 | None | None | None |
|------+--------------+------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | None | None |
|------+--------------+------------+------------+------------|
| 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 |
+------------------------------------------------------------+