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# EVEREX SYSTEMS, INC.
STEP 486 GATE ARRAY (EV-8038)
Processor 80486DX
Processor Speed 25/33MHz
Chip Set Everex
Max. Onboard 64MB (on external memory board)
DRAM
Cache 128/256KB
BIOS Everex
Dimensions 355mm x 250mm
I/O Options 32-bit external memory card slot, parallel
port, serial ports (2)
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------+----------+------------------------+----------|
| Serial port | J26 | Parallel port | LPT |
| (COM1) | | | |
|-------------+----------+------------------------+----------|
| Serial port | J27 | External memory card | S1 |
| (COM2) | | slot | |
|-------------+----------+------------------------+----------|
| Front panel | LED | | |
| connecter | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+--------+-------------|
| » | Parallel port interrupt select | J18 | pins 5 & 6 |
| | IRQ7 | | closed |
|---+---------------------------------+--------+-------------|
| | Parallel port interrupt select | J18 | pins 3 & 4 |
| | IRQ5 | | closed |
|---+---------------------------------+--------+-------------|
| | Parallel port interrupt select | J18 | pins 1 & 2 |
| | IRQ9 | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port COM1 interrupt | J19 | pins 5 & 6 |
| | select IRQ4 | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port COM1 interrupt | J19 | pins 3 & 4 |
| | select IRQ3 | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port COM1 interrupt | J19 | pins 7 & 8 |
| | select IRQ5 | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port COM1 interrupt | J19 | pins 1 & 2 |
| | select IRQ9 | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port COM2 interrupt | J19 | pins 11 & |
| | select IRQ3 | | 12 closed |
|---+---------------------------------+--------+-------------|
| | Serial port COM2 interrupt | J19 | pins 13 & |
| | select IRQ4 | | 14 closed |
|---+---------------------------------+--------+-------------|
| | Serial port COM2 interrupt | J19 | pins 15 & |
| | select IRQ5 | | 16 closed |
|---+---------------------------------+--------+-------------|
| | Serial port COM2 interrupt | J19 | pins 9 & 10 |
| | select IRQ9 | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 128KB | (5) 32K x 8 | NONE |
|------------------+--------------------+--------------------|
| 256KB | (5) 32K x 8 | (5) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J17 |
|-----------------------------+------------------------------|
| 128KB | Open |
|-----------------------------+------------------------------|
| 256KB | 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 |
+------------------------------------------------------------+