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# DATAEXPERT CORPORATION
EXP4044
Device Mainboard
Type
Processor CXM6/80486SX/CXM7/AM486DX/AM486DXL/80486DX2/80486DX4/
P24T
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set OPTI
Maximum 64MB
Onboard
Memory
Cache 64/128/256KB
BIOS Award
Dimensions 254mm x 218mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Power LED & | J1 | Turbo LED | JP2 |
| keylock | | | |
|------------------+----------+-------------------+----------|
| Speaker | J2 | Green PC | JP20 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Reset switch | J3 | Turbo switch | JP35 |
|------------------+----------+-------------------+----------|
| External battery | J4 | 32-bit VESA local | SL1 – |
| | | bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|------------------------------------+-------+---------------|
| » | Monitor type select color | JP32 | Closed |
|---+--------------------------------+-------+---------------|
| | Monitor type select monochrome | JP32 | Open |
|---+--------------------------------+-------+---------------|
| » | CMOS memory normal operation | JP33 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | CMOS memory clear | JP33 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| » | L2 write through | JP34 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | L2 write back | JP34 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION 1 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 2MB | (4) 256K x 9 | None | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 2MB | None | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 2MB | None | (1) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 4MB | (4) 1M x 9 | None | None |
|------------+---------------+---------------+---------------|
| 4MB | None | (1) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 5MB | (4) 256K x 9 | None | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 5MB | None | (1) 256K x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | None | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | None | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | None | (1) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | None | None | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 17MB | (4) 256K x 9 | None | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 17MB | None | (1) 256K x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (4) 1M x 9 | None | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | None | (1) 1M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (4) 4M x 9 | None | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | None | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | None | (1) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 64MB | (4) 16M x 9 | None | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION 2 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 2MB | None | (1) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 4MB | (4) 1M x 9 | None | None |
|------------+---------------+---------------+---------------|
| 4MB | None | (1) 512K x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 8MB | None | (1) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 10MB | None | (1) 512K x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | None | (1) 2M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | None | (1) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 64MB | (4) 16M x 9 | None | None |
|------------+---------------+---------------+---------------|
| 64MB | None | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Configuration | JP41 |
|----------------------------+-------------------------------|
| » | 1 | Pins 2 & 3 closed |
|-------+--------------------+-------------------------------|
| | 2 | 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) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP13 | JP27 | JP28 | JP29 |
|-------+-----------------+----------------+--------+--------|
| 64KB | Pins 2 & 3 | Pins 1 & 2 | Open | Open |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 128KB | Pins 1 & 2 | Pins 1 & 2 | Open | Closed |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 256KB | Pins 2 & 3 | Pins 1 & 2 | Closed | Closed |
| | closed | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP3 | JP4 | JP17 |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 50iMHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP5 | JP6 | JP8 | JP19 | JP24 | JP39 | JP43 |
|----------+-----+------+------+------+------+------+--------|
| CX M6 | 2 & | Open | Open | 1 & | 1 & | 1 & | Open |
| | 3 | | | 2 | 2 | 2 | |
|----------+-----+------+------+------+------+------+--------|
| 80486SX | 2 & | Open | Open | 1 & | Open | 2 & | Open |
| | 3 | | | 2 | | 3 | |
|----------+-----+------+------+------+------+------+--------|
| AM486DX | 1 & | 2 & | 1 & | 1 & | Open | 2 & | Open |
| | 2 | 3 | 2 | 2 | | 3 | |
|----------+-----+------+------+------+------+------+--------|
| AM486DXL | 1 & | 2 & | 1 & | 1 & | Open | 2 & | Open |
| | 2 | 3 | 2 | 2 | | 3 | |
|----------+-----+------+------+------+------+------+--------|
| 80486DX | 1 & | 2 & | 1 & | 1 & | Open | 2 & | Open |
| | 2 | 3 | 2 | 2 | | 3 | |
|----------+-----+------+------+------+------+------+--------|
| 80486DX4 | 1 & | 2 & | 1 & | 1 & | Open | 2 & | Closed |
| | 2 | 3 | 2 | 2 | | 3 | |
|----------+-----+------+------+------+------+------+--------|
| P24T | 1 & | 2 & | 1 & | 2 & | 2 & | 2 & | Open |
| | 2 | 3 | 2 | 3 | 3 | 3 | |
|----------+-----+------+------+------+------+------+--------|
| CX M7 | 1 & | 2 & | 1 & | 1 & | 1 & | 1 & | Open |
| | 2 | 3 | 2 | 2 | 2 | 2 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (PQFP ONLY) |
|------------------------------------------------------------|
| Setting | JP11 | JP12 | JP25 |
|-------------------+-------------+-------------+------------|
| | Enabled | Open | Open | Closed |
|---+---------------+-------------+-------------+------------|
| » | Disabled | Closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU MULTIPLIER SELECTION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Multiplier | JP36 | JP37 | JP38 |
|---------------+---------------+--------------+-------------|
| 2x | Open | Closed | Open |
|---------------+---------------+--------------+-------------|
| 2.5x | Open | Open | Closed |
|---------------+---------------+--------------+-------------|
| 3x | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP44 | JP45 | JP46 |
|--------------+------------+------------+-------------------|
| | 3.3v | Open | Closed | Pins 1 & 2 closed |
|---+----------+------------+------------+-------------------|
| » | 6v | Closed | Open | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP40 |
|----------------------------+-------------------------------|
| » | <= 33MHz | Pins 2 & 3 closed |
|---+------------------------+-------------------------------|
| | >33 MHz | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| GREEN PC SELECTION |
|------------------------------------------------------------|
| Setting | JP9 | JP10 |
|------------------------+-----------------+-----------------|
| | Enabled | Closed | Closed |
|---+--------------------+-----------------+-----------------|
| » | Disabled | Open | Open |
+------------------------------------------------------------+