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# BEK-TRONIC TECHNOLOGY, INC.
BEK-V429
Processor CX486M6/SL80486SX/80486SX/CX486M7/SL80486DX/80486DX/SL80486DX/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 330mm x 218mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | J2 | Speaker | JP38 |
|-------------------+----------+------------------+----------|
| Green PC | JP6 | Green PC | JP39 |
| connector | | connector | |
| | | (monitor) | |
|-------------------+----------+------------------+----------|
| Power LED & | JP22 | Green PC | JP41 |
| keylock | | connector LED | |
|-------------------+----------+------------------+----------|
| Turbo LED | JP34 | Reset switch | S1 |
|-------------------+----------+------------------+----------|
| Turbo switch | JP36 | 32-bit VESA | SL1 - |
| | | local bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Monitor type select color | JP1 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP1 | Open |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | JP2 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | JP2 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Battery type select external | JP2 | Open |
|---+--------------------------------+--------+--------------|
| » | Factory configured - do not | JP7 | Closed |
| | alter | | |
|---+--------------------------------+--------+--------------|
| » | Factory configured - do not | JP30 | N/A |
| | alter | | |
|---+--------------------------------+--------+--------------|
| » | Factory configured - do not | JP31 | pins 2 & 3 |
| | alter | | closed |
|---+--------------------------------+--------+--------------|
| » | LRDY wait state select 0 wait | JP33 | pins 2 & 3 |
| | states | | closed |
|---+--------------------------------+--------+--------------|
| | LRDY wait state select 1 wait | JP33 | pins 1 & 2 |
| | state | | closed |
|---+--------------------------------+--------+--------------|
| » | Factory configured - do not | JP40 | pins 1 & 2, |
| | alter | | 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 1MB | (4) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|-------+-------------+------------+------------+------------|
| 1MB | NONE | (1) 256K x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 2MB | (4) 256K x | (1) 256K x | NONE | NONE |
| | 9 | 36 | | |
|-------+-------------+------------+------------+------------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 4MB | (4) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 9 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 4MB | NONE | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 5MB | (4) 256K x | (1) 1M x | NONE | NONE |
| | 9 | 36 | | |
|-------+-------------+------------+------------+------------|
| 6MB | (4) 256K x | (1) 256K x | (1) 1M x | NONE |
| | 9 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 8MB | (4) 1M x 9 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 8MB | (4) 1M x 9 | NONE | (1) 1M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 8MB | NONE | (1) 1M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 10MB | (4) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 9 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (4) 1M x 9 | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | NONE | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 16MB | (4) 1M x 9 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | NONE | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 17MB | (4) 256K x | (1) 4M x | NONE | NONE |
| | 9 | 36 | | |
|-------+-------------+------------+------------+------------|
| 20MB | (4) 1M x 9 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 20MB | (4) 1M x 9 | NONE | (1) 4M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 20MB | NONE | (1) 1M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 32MB | (4) 4M x 9 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (4) 4M x 9 | NONE | (1) 4M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 32MB | NONE | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 64MB | (4) 16M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 64MB | (4) 4M x 9 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | NONE | (1) 16M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (4) 16M x 9 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (4) 16M x 9 | NONE | (1) 16M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 128MB | NONE | (1) 16M x | (1) 16M x | NONE |
| | | 36 | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 |
|----------------------------+-------------------------------|
| 1MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 1MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 4MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 4MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 4MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 5MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 6MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 8MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 8MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 8MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 10MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 12MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 12MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 16MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 16MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 17MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 20MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 20MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 20MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 32MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 32MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 32MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 64MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 64MB | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 64MB | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 128MB | pins 2 & 3 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 | JP8 | JP27 | JP28 |
|------------+-------------------+-------------+-------------|
| 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 | JP26 |
|----------------------------+-------------------------------|
| 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 | JP9 | JP10 | JP11 | JP12 | JP13 |
|---------------+---------+---------+--------+-------+-------|
| CX486M6 | Closed | Open | 1 & 2 | 2 & 3 | Open |
|---------------+---------+---------+--------+-------+-------|
| SL80486SX | Open | Closed | 1 & 2 | 1 & 2 | Open |
|---------------+---------+---------+--------+-------+-------|
| 80486SX | Open | Open | 1 & 2 | 1 & 2 | Open |
|---------------+---------+---------+--------+-------+-------|
| CX486M7 (1x) | Closed | Open | 2 & 3 | 2 & 3 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| CX486M7 (2x) | Closed | Open | 2 & 3 | 2 & 3 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| SL80486DX | Open | Closed | 1 & 2 | 1 & 2 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| 80486DX | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| SL80486DX2 | Open | Closed | 1 & 2 | 1 & 2 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| 80486DX2 | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| 80486DX4 | Open | Closed | 1 & 2 | 1 & 2 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| P24D (WB) | Open | Closed | 2 & 3 | 1 & 2 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| P24D (WT) | Open | Closed | 2 & 3 | 1 & 2 | 1 & 2 |
|---------------+---------+---------+--------+-------+-------|
| P24T | Open | Closed | 2 & 3 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP15 | JP19 | JP20 | JP21 | JP22 |
|--------------+---------+--------+--------+--------+--------|
| CX486M6 | Open | Open | Open | Open | Open |
|--------------+---------+--------+--------+--------+--------|
| SL80486SX | Open | Open | Closed | Closed | Open |
|--------------+---------+--------+--------+--------+--------|
| 80486SX | Open | Open | Open | Open | Open |
|--------------+---------+--------+--------+--------+--------|
| CX486M7 (1x) | Open | Open | Open | Open | Closed |
|--------------+---------+--------+--------+--------+--------|
| CX486M7 (2x) | Open | Open | Open | Open | Closed |
|--------------+---------+--------+--------+--------+--------|
| SL80486DX | Open | Open | Closed | Closed | Open |
|--------------+---------+--------+--------+--------+--------|
| 80486DX | Open | Open | Open | Open | Open |
|--------------+---------+--------+--------+--------+--------|
| SL80486DX2 | Open | Open | Closed | Closed | Open |
|--------------+---------+--------+--------+--------+--------|
| 80486DX2 | Open | Open | Open | Open | Open |
|--------------+---------+--------+--------+--------+--------|
| 80486DX4 | Open | Open | Closed | Closed | Open |
|--------------+---------+--------+--------+--------+--------|
| P24D (WB) | Closed | 1 & 2 | Closed | Closed | Open |
|--------------+---------+--------+--------+--------+--------|
| P24D (WT) | Closed | 2 & 3 | Closed | Closed | Open |
|--------------+---------+--------+--------+--------+--------|
| P24T | Closed | Open | Closed | Closed | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP23 | JP29 | JP32 |
|--------------+-----------------+--------------+------------|
| CX486M6 | pins 2 & 3 | pins 1 & 3, | pins 1 & 2 |
| | closed | 2 & 4 closed | closed |
|--------------+-----------------+--------------+------------|
| SL80486SX | pins 2 & 3 | pins 1 & 3, | Open |
| | closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| 80486SX | pins 2 & 3 | pins 1 & 3, | Open |
| | closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| CX486M7 (1x) | pins 1 & 2, 3 & | pins 1 & 3, | Open |
| | 4 closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| CX486M7 (2x) | pins 1 & 2, 3 & | pins 1 & 3, | Open |
| | 4 closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| SL80486DX | pins 1 & 2, 3 & | pins 1 & 3, | Open |
| | 4 closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| 80486DX | pins 1 & 2, 3 & | pins 1 & 3, | Open |
| | 4 closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| SL80486DX2 | pins 1 & 2, 3 & | pins 1 & 3, | Open |
| | 4 closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| 80486DX2 | pins 1 & 2, 3 & | pins 1 & 3, | Open |
| | 4 closed | 2 & 4 closed | |
|--------------+-----------------+--------------+------------|
| 80486DX4 | pins 1 & 2, 3 & | pins 3 & 5, | Open |
| | 4 closed | 4 & 6 closed | |
|--------------+-----------------+--------------+------------|
| P24D (WB) | pins 1 & 2, 3 & | pins 1 & 3, | pins 2 & 3 |
| | 4 closed | 2 & 4 closed | closed |
|--------------+-----------------+--------------+------------|
| P24D (WT) | pins 1 & 2, 3 & | pins 1 & 3, | pins 2 & 3 |
| | 4 closed | 2 & 4 closed | closed |
|--------------+-----------------+--------------+------------|
| P24T | pins 1 & 2, 3 & | pins 1 & 3, | pins 2 & 3 |
| | 4 closed | 2 & 4 closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP17 | JP18 |
|--------------------+-------------------+-------------------|
| 25MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 33MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 40MHz | Closed | Open |
|--------------------+-------------------+-------------------|
| 50iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 50MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 66iMHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 75iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 100iMHz | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP35 |
|-------------------------------+----------------------------|
| 0 wait states | Open |
|-------------------------------+----------------------------|
| 1 wait state | Closed |
|------------------------------------------------------------|
| Note: The location of JP35 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP37 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| > 33MHz | Closed |
|------------------------------------------------------------|
| Note: The location of JP37 is unidentified. |
+------------------------------------------------------------+