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# BEK-TRONIC TECHNOLOGY, INC.
BEK-4806
Processor 80486SX/80487SX/80486DX
Processor Speed 50MHz
Chip Set ACC
Max. Onboard DRAM 32MB
Cache 32/64/128/256KB
BIOS Unidentified
Dimensions 220mm x 220mm
I/O Options None
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Reset switch | J1 | Speaker | J4 |
|----------------+----------+---------------------+----------|
| Turbo switch | J2 | Power LED & keylock | J5 |
|----------------+----------+---------------------+----------|
| Turbo LED | J3 | External battery | J6 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| ยป | Monitor type select color | JP1 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP1 | pins 2 & 3 |
| | | | closed |
|------------------------------------------------------------|
| Note:The settings for this jumper are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 32KB | (4) 8K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JK1 | JK2 | JK3 | JK6 |
|-------+--------------+--------------+--------------+-------|
| 32KB | 1 & 2, 3 & 4 | 1 & 2, 3 & 4 | 1 & 2, 3 & 4 | 1 & 2 |
|-------+--------------+--------------+--------------+-------|
| 64KB | 1 & 2, 3 & 4 | 2 & 3, 4 & 5 | 1 & 2, 3 & 4 | 2 & 3 |
|-------+--------------+--------------+--------------+-------|
| 128KB | 2 & 3, 4 & 5 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 | 1 & 2 |
|-------+--------------+--------------+--------------+-------|
| 256KB | 2 & 3, 4 & 5 | 2 & 3, 4 & 5 | 2 & 3, 4 & 5 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP2 | JP3 |
|----------+-------------------+-----------------------------|
| 80486SX | pins 2 & 3 closed | pins 2 & 3 closed |
|----------+-------------------+-----------------------------|
| 80487SX | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
|----------+-------------------+-----------------------------|
| 80486DX | pins 3 & 4 closed | pins 1 & 2 and 3 & 4 closed |
+------------------------------------------------------------+