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# BEK-TRONIC TECHNOLOGY, INC.
BEK-4802L
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 20/25/33/50(internal)/66(internal)MHz
Chip Set OPTI
Max. Onboard DRAM 32MB
Cache None
BIOS AMI
Dimensions 220mm x 220mm
I/O Options Local bus slot
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Turbo LED | CR1 | Turbo switch | JP6 |
|---------------------+----------+----------------+----------|
| External battery | J1 | Local bus | S1 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J19 | Reset switch | SW1 |
|---------------------+----------+----------------+----------|
| Speaker | J20 | | |
|------------------------------------------------------------|
| Note: The location of J20 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------+--------+----------------|
| » | CMOS memory normal operation | JP4 | pins 1 & 2 |
| | | | closed |
|---+------------------------------+--------+----------------|
| | CMOS memory clear | JP4 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+--------+----------------|
| » | Monitor type select color | JP5 | Closed |
|---+------------------------------+--------+----------------|
| | Monitor type select | JP5 | Open |
| | monochrome | | |
|------------------------------------------------------------|
| Note: These settings are unverified. |
+------------------------------------------------------------+
+--------------------------------------------------------+
| DRAM CONFIGURATION |
|--------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|--------------------+-----------------+-----------------|
| 1MB | (4) 256K x 9 | NONE |
|--------------------+-----------------+-----------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|--------------------+-----------------+-----------------|
| 4MB | (4) 1M x 9 | NONE |
|--------------------+-----------------+-----------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|--------------------+-----------------+-----------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|--------------------+-----------------+-----------------|
| 16MB | (4) 4M x 9 | NONE |
|--------------------+-----------------+-----------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+--------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP3 |
|-----------+-------------------+--------+-------------------|
| 80486SX | Open | Open | pins 2 & 3 closed |
|-----------+-------------------+--------+-------------------|
| 80487SX | pins 2 & 3 closed | Closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80486DX | pins 1 & 2 closed | Closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80486DX2 | pins 1 & 2 closed | Closed | pins 1 & 2 closed |
+------------------------------------------------------------+