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# BEK-TRONIC TECHNOLOGY, INC.
BEK-P402
Processor CX486S/80486SX/CX486DX/SL80486DX/LSE80486DX/80486DX/SL80486DX2/80486DX2/80486DX4/P24D/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set OPTI
Max. 128MB
Onboard
DRAM
Cache 64/128/256KB
BIOS Award
Dimensions 255mm x 220mm
I/O 32-bit VESA local bus slots (3), 32-bit PCI slots (3), green PC connector
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| External battery | J2 | Turbo LED | JP27 |
|--------------------+----------+-----------------+----------|
| Power LED & | J16 | Turbo switch | JP28 |
| keylock | | | |
|--------------------+----------+-----------------+----------|
| Green PC connector | JP3 | Reset switch | S1 |
| (monitor) | | | |
|--------------------+----------+-----------------+----------|
| Speaker | JP25 | 32-bit PCI | PC1 - |
| | | slots | PC3 |
|--------------------+----------+-----------------+----------|
| Green PC connector | JP26 | 32-bit VESA | SL1 - |
| | | local bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP1 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | PCI clock type select | JP4 | pins 2 & 3 |
| | synchronous | | closed |
|---+----------------------------------+--------+------------|
| | PCI clock type select | JP4 | pins 1 & 2 |
| | asynchronous | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP9 | pins 2 & 3 |
| | alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 256K x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 1MB | NONE | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | (4) 256K x 9 | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | (4) 256K x 9 | NONE | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 2MB | NONE | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 4MB | (4) 1M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 5MB | (4) 256K x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 5MB | (4) 256K x 9 | NONE | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | NONE | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 16MB | NONE | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 17MB | (4) 256K x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 17MB | (4) 256K x 9 | NONE | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (4) 1M x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 20MB | (4) 1M x 9 | NONE | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (4) 4M x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 32MB | (4) 4M x 9 | NONE | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 64MB | (4) 16M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 64MB | NONE | (1) 16M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 128MB | (4) 16M x 9 | (1) 16M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 128MB | (4) 16M x 9 | NONE | (1) 16M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP45 |
|----------------------------+-------------------------------|
| 1MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 2MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 4MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 4MB | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | JP45 |
|----------------------------+-------------------------------|
| 5MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 5MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 8MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 8MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 8MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 17MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 17MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 20MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 20MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 32MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 32MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 32MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 64MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 64MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 128MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 128MB | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-------+-------------+-------------+------------------------|
| 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) 16K x 8 or (1) 32K |
| | | | x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP20 | JP22 | JP24 |
|------------+-------------------+-------------+-------------|
| 64KB | pins 2 & 3 closed | Open | Open |
|------------+-------------------+-------------+-------------|
| 128KB | pins 1 & 2 closed | Closed | Open |
|------------+-------------------+-------------+-------------|
| 256KB | pins 2 & 3 closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE TAG JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP23 |
|----------------------------+-------------------------------|
| 8K x 8 | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16K x 8 | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 32K x 8 | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP6 | JP7 | JP8 | JP10 | JP11 |
|-------------+---------+---------+---------+-------+--------|
| CX486S | Open | Open | Open | 1 & 2 | Open |
|-------------+---------+---------+---------+-------+--------|
| 8048SX | Open | Open | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| CX486DX | 1 & 2 | 1 & 2 | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| SL80486DX | Open | 1 & 2 | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| LSE80486DX | Open | Open | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| 80486DX | Open | 1 & 2 | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| SL80486DX2 | Open | 1 & 2 | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| 80486DX2 | Open | 1 & 2 | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| 80486DX4 | Open | 1 & 2 | Open | Open | Open |
|-------------+---------+---------+---------+-------+--------|
| P24D | Open | 1 & 2 | Closed | Open | Closed |
|-------------+---------+---------+---------+-------+--------|
| P24T | Open | 1 & 2 | Open | 2 & 3 | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP12 | JP13 | JP14 | JP15 | JP16 |
|------------+------+--------+-------+------------+----------|
| CX486S | Open | Open | 1 & 2 | 2 & 3 | 1 & 2, 4 |
| | | | | | & 5 |
|------------+------+--------+-------+------------+----------|
| 8048SX | Open | Open | 1 & 2 | 2 & 3 | 1 & 2, 4 |
| | | | | | & 5 |
|------------+------+--------+-------+------------+----------|
| CX486DX | Open | Open | 1 & 2 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------+------+--------+-------+------------+----------|
| SL80486DX | Open | Closed | 1 & 2 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------+------+--------+-------+------------+----------|
| LSE80486DX | Open | Closed | 1 & 2 | 2 & 3 | 1 & 2, 4 |
| | | | | | & 5 |
|------------+------+--------+-------+------------+----------|
| 80486DX | Open | Open | 1 & 2 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------+------+--------+-------+------------+----------|
| SL80486DX2 | Open | Closed | 1 & 2 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------+------+--------+-------+------------+----------|
| 80486DX2 | Open | Open | 1 & 2 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------+------+--------+-------+------------+----------|
| 80486DX4 | Open | Closed | 1 & 2 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------+------+--------+-------+------------+----------|
| P24D | Open | Closed | 1 & 2 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------+------+--------+-------+------------+----------|
| P24T | Open | Closed | 2 & 3 | 1 & 2, 3 & | 1 & 2, 4 |
| | | | | 4 | & 5 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP17 | JP21 | JP36 | JP37 | JP38 |
|------------+---------+---------+---------+---------+-------|
| CX486S | Open | Open | Open | Closed | Open |
|------------+---------+---------+---------+---------+-------|
| 8048SX | Open | Open | Open | Open | Open |
|------------+---------+---------+---------+---------+-------|
| CX486DX | Open | Open | Open | Closed | Open |
|------------+---------+---------+---------+---------+-------|
| SL80486DX | Closed | Closed | Closed | Open | Open |
|------------+---------+---------+---------+---------+-------|
| LSE80486DX | Closed | Closed | Closed | Open | Open |
|------------+---------+---------+---------+---------+-------|
| 80486DX | Open | Open | Open | Open | Open |
|------------+---------+---------+---------+---------+-------|
| SL80486DX2 | Closed | Closed | Closed | Open | Open |
|------------+---------+---------+---------+---------+-------|
| 80486DX2 | Open | Open | Open | Open | Open |
|------------+---------+---------+---------+---------+-------|
| 80486DX4 | Closed | Closed | Closed | Open | Open |
|------------+---------+---------+---------+---------+-------|
| P24D | Closed | Closed | Closed | Open | Open |
|------------+---------+---------+---------+---------+-------|
| P24T | Closed | Closed | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP30 | JP31 |
|--------------------+-------------------+-------------------|
| 25MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 33MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 40MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 50iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 50MHz | Closed | Open |
|--------------------+-------------------+-------------------|
| 66iMHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 75iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 100iMHz | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP46 | JP47 | JP48 |
|--------------+---------------+--------------+--------------|
| 25MHz | Closed | Open | Open |
|--------------+---------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
+------------------------------------------------------------+