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# DATAEXPERT CORPORATION
AIO4044
Device Mainboard
Type
Processor CX486S/80486SX/80487SX/80486DX/80486DX2/80486DX4/P24T
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set OPTI
Video Chip Trident
Set
Maximum 64MB
Onboard
Memory
Maximum Unidentified
Video
Memory
Cache 128/512KB
BIOS Award
Dimensions 188mm x 188mm
I/O Floppy drive interface, IDE interface, parallel port, PS/2 mouse
Options port, serial ports (2), VGA feature connector, VGA port, riser slot
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| VGA port | CN1 | PS/2 mouse port | CN8 |
|--------------------+----------+-----------------+----------|
| Parallel port | CN2 | Power LED & | J2 |
| | | keylock | |
|--------------------+----------+-----------------+----------|
| Serial port 2 | CN3 | Reset switch | J3 |
|--------------------+----------+-----------------+----------|
| Serial port 1 | CN4 | Turbo LED | J4 |
|--------------------+----------+-----------------+----------|
| VGA feature | CN5 | Turbo switch | J5 |
| connector | | | |
|--------------------+----------+-----------------+----------|
| Floppy drive | CN6 | Speaker | J6 |
| interface | | | |
|--------------------+----------+-----------------+----------|
| IDE interface | CN7 | Riser slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|--------------------------------+------------+--------------|
| » | Factory configured - do | J1 | Unidentified |
| | not alter | | |
|---+----------------------------+------------+--------------|
| » | Factory configured - do | JP2 | Unidentified |
| | not alter | | |
|---+----------------------------+------------+--------------|
| » | Factory configured - do | JP5 | Unidentified |
| | not alter | | |
|---+----------------------------+------------+--------------|
| » | VGA output select | JP6 | Closed |
| | interlaced | | |
|---+----------------------------+------------+--------------|
| | VGA output select non | JP6 | Open |
| | interlaced | | |
|---+----------------------------+------------+--------------|
| » | CPU clock speed select | JP10 | Open |
| | <33MHz | | |
|---+----------------------------+------------+--------------|
| | CPU clock speed select | JP10 | Closed |
| | >33MHz | | |
|---+----------------------------+------------+--------------|
| » | IDE interface enabled | JP24/pins | Open |
| | | 5 & 6 | |
|---+----------------------------+------------+--------------|
| | IDE interface disabled | JP24/pins | Closed |
| | | 5 & 6 | |
|---+----------------------------+------------+--------------|
| » | IDE select primary | JP24/pins | Open |
| | | 7 & 8 | |
|---+----------------------------+------------+--------------|
| | IDE select secondary | JP24/pins7 | Closed |
| | | & 8 | |
|---+----------------------------+------------+--------------|
| » | IDE read prefetch disabled | JP24/pins | Closed |
| | | 9 & 10 | |
|---+----------------------------+------------+--------------|
| | IDE read prefetch enabled | JP24/pins | Open |
| | | 9 & 10 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (1) 512K x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (1) 512K x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (1) 1M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 10MB | (1) 2M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 18MB | (1) 4M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (1) 4M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 36MB | (1) 8M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (1) 8M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | (1) 8K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (4) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP28 | JP29 |
|-------------------+--------------------+-------------------|
| 128KB | Open | Open |
|-------------------+--------------------+-------------------|
| 512KB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Note: The size and location of the video memory is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP13 | JP14 | JP15 | JP16 |
|------------+------------+------------+-----------+---------|
| 25MHz | Closed | Closed | Closed | Open |
|------------+------------+------------+-----------+---------|
| 33MHz | Closed | Closed | Open | Open |
|------------+------------+------------+-----------+---------|
| 40MHz | Open | Closed | Open | Open |
|------------+------------+------------+-----------+---------|
| 50iMHz | Closed | Closed | Closed | Open |
|------------+------------+------------+-----------+---------|
| 50MHz | Closed | Open | Open | Open |
|------------+------------+------------+-----------+---------|
| 66iMHz | Closed | Closed | Open | Open |
|------------+------------+------------+-----------+---------|
| 75iMHz | Closed | Closed | Closed | Open |
|------------+------------+------------+-----------+---------|
| 100iMHz | Closed | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP25 | JP26 |
|------------+--------------------------+--------------------|
| CX486S | Pins 2 & 3 closed | Open |
|------------+--------------------------+--------------------|
| 80486SX | Pins 2 & 3 closed | Open |
|------------+--------------------------+--------------------|
| 80487SX | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
|------------+--------------------------+--------------------|
| 80486DX | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
|------------+--------------------------+--------------------|
| 80486DX4 | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
|------------+--------------------------+--------------------|
| P24T | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU MULTIPLIER SELECTION |
|------------------------------------------------------------|
| Multiplier | JP22 |
|----------------------------+-------------------------------|
| 2x | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2.5x | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 3x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP27 |
|----------------------------+-------------------------------|
| 3.3v | Pins 2 & 3, 5 & 6 closed |
|----------------------------+-------------------------------|
| 5v | Pins 1 & 2, 4 & 5 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VGA SELECTION |
|------------------------------------------------------------|
| Setting | JP3 | JP8 |
|------------------+--------------------+--------------------|
| » | Enabled | Pins 1 & 2 closed | Pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE MODE SELECTION |
|------------------------------------------------------------|
| Mode | JP24/pins 1 & 2 | JP24/pins 3 & 4 |
|------------------+--------------------+--------------------|
| » | 0 | Closed | Closed |
|---+--------------+--------------------+--------------------|
| | 1 | Open | Closed |
|---+--------------+--------------------+--------------------|
| | 2 | Closed | Open |
|---+--------------+--------------------+--------------------|
| | 3 | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE FREQUENCY SELECTION |
|------------------------------------------------------------|
| Frequency | JP24/pins 11 & 12 | JP24/pins 13 & 14 |
|------------------+--------------------+--------------------|
| | 25MHz | Open | Open |
|---+--------------+--------------------+--------------------|
| » | 33MHz | Closed | Open |
|---+--------------+--------------------+--------------------|
| | 40MHz | Open | Closed |
|---+--------------+--------------------+--------------------|
| | 50MHz | Closed | Closed |
+------------------------------------------------------------+