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# BEK-TRONIC TECHNOLOGY, INC.
BEK-V409
Processor 80486SX/80487SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set UMC
Max. Onboard 128MB
DRAM
Cache 32/64/128/256KB
BIOS AMI
Dimensions 254mm x 218mm
I/O Options 32-bit VESA local bus slots (3)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Speaker | J5 |
|------------------+----------+-------------------+----------|
| Reset switch | J2 | Power LED & | J6 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Turbo switch | J3 | 32-bit VESA local | SL1 - |
| | | bus slots | SL3 |
|------------------+----------+-------------------+----------|
| Turbo LED | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP1 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | VESA card type select any card | JP3 | pins 1 & 2 |
| | installed | | closed |
|---+----------------------------------+--------+------------|
| | VESA card type select Weitek | JP3 | pins 2 & 3 |
| | 9000 only | | closed |
|---+----------------------------------+--------+------------|
| » | ADS delay select no delays | JP5 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | ADS delay select 1 delay for | JP5 | pins 2 & 3 |
| | 50MHz | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
|------------------+--------------------+--------------------|
| 128MB | (4) 16M x 9 | (4) 16M 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) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP12 | JP13 | JP14 | JP15 | JP16 |
|-------+------------+------------+--------+--------+--------|
| 32KB | Open | pins 2 & 3 | Open | Open | Open |
| | | closed | | | |
|-------+------------+------------+--------+--------+--------|
| 64KB | Open | pins 1 & 2 | Open | Closed | Open |
| | | closed | | | |
|-------+------------+------------+--------+--------+--------|
| 128KB | pins 2 & 3 | pins 2 & 3 | Open | Closed | Closed |
| | closed | closed | | | |
|-------+------------+------------+--------+--------+--------|
| 256KB | pins 1 & 2 | pins 1 & 2 | Closed | Closed | Closed |
| | closed | closed | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP17 | JP18 |
|-------------------+--------------------+-------------------|
| 80486SX | pins 2 & 3 closed | Open |
|-------------------+--------------------+-------------------|
| 80487SX | pins 1 & 2, 3 & 4 | pins 2 & 3 closed |
| | closed | |
|-------------------+--------------------+-------------------|
| 80486DX | pins 1 & 2, 3 & 4 | pins 1 & 2 closed |
| | closed | |
|-------------------+--------------------+-------------------|
| 80486DX2 | pins 1 & 2, 3 & 4 | pins 1 & 2 closed |
| | closed | |
|-------------------+--------------------+-------------------|
| Pentium Overdrive | pins 1 & 2, 3 & 4 | pins 1 & 2 closed |
| | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP8 | JP9 | JP10 |
|---------------+--------------+--------------+--------------|
| 25MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 33MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50iMHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP11 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| > 33MHz | Closed |
+------------------------------------------------------------+