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# EVEREX SYSTEMS, INC.
286/12 (EV-1815) - (ZIP VERSION)
Processor 80286
Processor Speed 12MHz
Chip Set None
Max. Onboard DRAM 1MB
Cache None
BIOS AMI
Dimensions 355mm x 304mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Front panel | J1 | External battery | J4 |
| display | | | |
|------------------+----------+-------------------+----------|
| Speaker | J2 | | |
|------------------------------------------------------------|
| Note: NPU speed must equal the speed of oscillator Y5 |
| divided by 3. The location of J4 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Monitor type select | SW1/1 | Open |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| | Monitor type select color | SW1/1 | Closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W1 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Expansion bus (8-bit) | W2 | pins 5 & 6 |
| | speed select 6 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| » | Expansion bus (8-bit) | W2 | pins 3 & 4 |
| | speed select 5 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| | Expansion bus (8-bit) | W2 | pins 1 & 2 |
| | speed select 4 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| » | Expansion bus (16-bit) | W3 | pins 5 & 6 |
| | speed select 2 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| | Expansion bus (16-bit) | W3 | pins 7 & 8 |
| | speed select 1 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| | Expansion bus (16-bit) | W3 | pins 3 & 4 |
| | speed select 3 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| | Expansion bus (16-bit) | W3 | pins 1 & 2 |
| | speed select 4 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W4 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W5 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W6 | pins 1 & 2 |
| | not alter | | open |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W6 | pins 5 & 6 |
| | not alter | | open |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W6 | pins 7 & 8 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W7 | pins 1 & 2 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W8 | pins 1 & 2 |
| | not alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (18) 4464 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (18) 4464 | (18) 4464 |
|------------------------------------------------------------|
| Note:This board uses ZIPs not DIPs. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W6 |
|----------------------------+-------------------------------|
| 512KB | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 1MB | pins 3 & 4 open |
+------------------------------------------------------------+