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# ACTION WELL DEVELOPMENT, LTD.
AM-8887
Device Mainboard
Type
Processor 80486SX/UMC486DX/AM486DX/80486DX/SL80486DX/UMC486DX2/
CX486DX2/IBM486DX2/TI486DX2/AM486DX2/80486DX2/
SL80486DX2/CX486DX4/IBM486DX4/TI486DX4/AM486DX4/
(SL) AM486DX4/SL80486DX4/P24D/P24T/CX 5X86/AM 5X86
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed
100(internal)/120(internal)/133(internal)MHz
Chip Set UMC
Maximum 64MB (EDO & SDRAM supported)
Onboard
Memory
Cache 128/256/512KB
BIOS AMI
Dimensions 220mm x 180mm
I/O 32-bit PCI slots (3), floppy drive interface, green PC
Options connector, IDE interfaces (2), parallel port, serial ports (2),
IR connector
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | Green PC | J10 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | IDE interface | J29 |
| | | LED | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN3 | Turbo switch | J30 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | Reset switch | J31 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | Turbo LED | J32 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | Speaker | J33 |
|-------------------+----------+------------------+----------|
| External battery | J2 | Power LED & | J34 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| IR connector | J3 | 32-bit PCI slots | PC1 – |
| | | | PC3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| | Battery type select internal | J2 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Battery type select external | J2 | Open |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | J2 | Pins 3 & 4 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| » | Flash BIOS voltage select 5v | J5 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | J5 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+---------------+---------------+---------+---------|
| 1MB | (1) 256K x 36 | None | None | None |
|--------+---------------+---------------+---------+---------|
| 2MB | (1) 512K x 36 | None | None | None |
|--------+---------------+---------------+---------+---------|
| 2MB | (1) 256K x 36 | (1) 256K x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 3MB | (1) 512K x 36 | (1) 256K x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 4MB | (1) 1M x 36 | None | None | None |
|--------+---------------+---------------+---------+---------|
| 4MB | (1) 512K x 36 | (1) 512K x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 5MB | (1) 1M x 36 | (1) 256K x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 6MB | (1) 1M x 36 | (1) 512K x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 16MB | (1) 4M x 36 | None | None | None |
|--------+---------------+---------------+---------+---------|
| 17MB | (1) 4M x 36 | (1) 256K x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 18MB | (1) 4M x 36 | (1) 512K x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | None | None |
|--------+---------------+---------------+---------+---------|
| 32MB | (1) 8M x 36 | None | None | None |
|--------+---------------+---------------+---------+---------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+-------------+---------------+----------+----------|
| 33MB | (1) 8M x 36 | (1) 256K x 36 | None | None |
|--------+-------------+---------------+----------+----------|
| 34MB | (1) 8M x 36 | (1) 512K x 36 | None | None |
|--------+-------------+---------------+----------+----------|
| 36MB | (1) 8M x 36 | (1) 1M x 36 | None | None |
|--------+-------------+---------------+----------+----------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 | None | None |
|--------+-------------+---------------+----------+----------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 | None | None |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | (1) 32K x 8 |
|------------------+--------------------+--------------------|
| 256KB | (4) 64K x 8 | (1) 32K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (4) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J1 |
|----------------------------+-------------------------------|
| 128KB | Open |
|----------------------------+-------------------------------|
| 256KB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | J28 |
|--------------------------+---------------------------------|
| 25MHz | Pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 33MHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 40MHz | Pins 1 & 2, 3 & 4 closed |
|--------------------------+---------------------------------|
| 50iMHz | Pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 50MHz | Pins 5 & 6 closed |
|--------------------------+---------------------------------|
| 66iMHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 75iMHz | Pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 80iMHz | Pins 1 & 2, 3 & 4 closed |
|--------------------------+---------------------------------|
| 100iMHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 120iMHz | Pins 1 & 2, 3 & 4 closed |
|--------------------------+---------------------------------|
| 133iMHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J6 | J7 | J12 | J13 | J14 |
|--------------+-------+-------+----------+----------+-------|
| 80486SX | 1 & 2 | 1 & 2 | Open | 2 & 3 | Open |
|--------------+-------+-------+----------+----------+-------|
| UMC486DX | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| AM486DX | 1 & 2 | 2 & 3 | Open | 1 & 2, 3 | Open |
| | | | | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| 80486DX | 1 & 2 | 1 & 2 | Open | 1 & 2, 3 | Open |
| | | | | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| SL80486DX | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| UMC486DX2 | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| CX486DX2 | 2 & 3 | 1 & 2 | 1 & 2, 3 | 1 & 2, 3 | 2 & 3 |
| | | | & 4 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| IBM486DX2 | 2 & 3 | 1 & 2 | 1 & 2, 3 | 1 & 2, 3 | 2 & 3 |
| | | | & 4 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| TI486DX2 | 2 & 3 | 1 & 2 | 1 & 2, 3 | 1 & 2, 3 | 2 & 3 |
| | | | & 4 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| AM486DX2 | 1 & 2 | 2 & 3 | Open | 1 & 2, 3 | Open |
| | | | | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| 80486DX2 | 1 & 2 | 1 & 2 | Open | 1 & 2, 3 | Open |
| | | | | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| SL80486DX2 | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| CX486DX4 | 2 & 3 | 1 & 2 | 1 & 2, 3 | 1 & 2, 3 | 2 & 3 |
| | | | & 4 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| IBM486DX4 | 2 & 3 | 1 & 2 | 1 & 2, 3 | 1 & 2, 3 | 2 & 3 |
| | | | & 4 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| TI486DX4 | 2 & 3 | 1 & 2 | 1 & 2, 3 | 1 & 2, 3 | 2 & 3 |
| | | | & 4 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| AM486DX4 | 1 & 2 | 2 & 3 | Open | 1 & 2, 3 | Open |
| | | | | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| (SL) | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| AM486DX4 | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| SL80486DX4 | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| P24D | 1 & 2 | 1 & 2 | 1 & 2, 3 | 1 & 2, 3 | Open |
| | | | & 4 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| P24T | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | 1 & 2 |
| | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| CX 5X86 | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| | | | & 5 | & 4 | |
|--------------+-------+-------+----------+----------+-------|
| AM 5X86 | 1 & 2 | 1 & 2 | 2 & 3, 4 | 1 & 2, 3 | Open |
| | | | & 5 | & 4 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | J15 | J16 | J17 | J18 | J19 |
|---------------+-------+------------+-------+-------+-------|
| 80486SX | Open | 1 & 2 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| UMC486DX | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| AM486DX | 3 & 4 | 1 & 2 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| 80486DX | 3 & 4 | 1 & 2 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| SL80486DX | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| UMC486DX2 | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| CX486DX2 | 3 & 4 | 3 & 4 | 2 & 3 | 1 & 2 | 2 & 3 |
|---------------+-------+------------+-------+-------+-------|
| IBM486DX2 | 3 & 4 | 3 & 4 | 2 & 3 | 1 & 2 | 2 & 3 |
|---------------+-------+------------+-------+-------+-------|
| TI486DX2 | 3 & 4 | 3 & 4 | 2 & 3 | 1 & 2 | 2 & 3 |
|---------------+-------+------------+-------+-------+-------|
| AM486DX2 | 3 & 4 | 1 & 2 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| 80486DX2 | 3 & 4 | 1 & 2 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| SL80486DX2 | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| CX486DX4 | 3 & 4 | 3 & 4 | 2 & 3 | 1 & 2 | Open |
|---------------+-------+------------+-------+-------+-------|
| IBM486DX4 | 3 & 4 | 3 & 4 | 2 & 3 | 1 & 2 | Open |
|---------------+-------+------------+-------+-------+-------|
| TI486DX4 | 3 & 4 | 3 & 4 | 2 & 3 | 1 & 2 | Open |
|---------------+-------+------------+-------+-------+-------|
| AM486DX4 | 3 & 4 | 1 & 2 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| (SL) AM486DX4 | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| SL80486DX4 | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| P24D | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| P24T | 2 & 3 | 3 & 4, 5 & | 1 & 2 | 2 & 3 | Open |
| | | 6 | | | |
|---------------+-------+------------+-------+-------+-------|
| CX 5X86 | 3 & 4 | 3 & 4 | Open | Open | Open |
|---------------+-------+------------+-------+-------+-------|
| AM 5X86 | 3 & 4 | 3 & 4 | Open | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | J20 | J21 | J22 | J23 | J24 |
|----------------+--------+--------+--------+-------+--------|
| 80486SX | Open | Open | Open | Open | Open |
|----------------+--------+--------+--------+-------+--------|
| UMC486DX | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| AM486DX | Open | Open | Open | Open | Open |
|----------------+--------+--------+--------+-------+--------|
| 80486DX | Open | Open | Open | Open | Open |
|----------------+--------+--------+--------+-------+--------|
| SL80486DX | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| UMC486DX2 | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| CX486DX2 | 2 & 3 | Open | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| IBM486DX2 | 2 & 3 | Open | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| TI486DX2 | 2 & 3 | Open | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| AM486DX2 | Open | Open | Open | Open | Open |
|----------------+--------+--------+--------+-------+--------|
| 80486DX2 | Open | Open | Open | Open | Open |
|----------------+--------+--------+--------+-------+--------|
| SL80486DX2 | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| CX486DX4 | 2 & 3 | Open | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| IBM486DX4 | 2 & 3 | Open | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| TI486DX4 | 2 & 3 | Open | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| AM486DX4 | Open | Open | Open | Open | Open |
|----------------+--------+--------+--------+-------+--------|
| (SL) AM486DX4 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Closed |
|----------------+--------+--------+--------+-------+--------|
| SL80486DX4 | 1 & 2 | Open | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| P24D | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | Closed |
|----------------+--------+--------+--------+-------+--------|
| P24T | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| CX 5X86 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open |
|----------------+--------+--------+--------+-------+--------|
| AM 5X86 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | J25 | J26 | J27 |
|---------------+--------------+--------------+--------------|
| 80486SX | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| UMC486DX | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| AM486DX | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| 80486DX | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| SL80486DX | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| UMC486DX2 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| CX486DX2 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| IBM486DX2 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| TI486DX2 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| AM486DX2 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| 80486DX2 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| SL80486DX2 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| CX486DX4 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| IBM486DX4 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| TI486DX4 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| AM486DX4 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| (SL) AM486DX4 | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| SL80486DX4 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| P24D | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| P24T | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| CX 5X86 | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| AM 5X86 | Closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J8 | J9 | J35 |
|----------+-------------------+-------------------+---------|
| 3.3v | Pins 2 & 3 closed | Pins 2 & 3 closed | Closed |
|----------+-------------------+-------------------+---------|
| 4v | Pins 2 & 3 closed | Pins 2 & 3 closed | Open |
|----------+-------------------+-------------------+---------|
| 5v | Pins 1 & 2 closed | Pins 1 & 2 closed | Open |
+------------------------------------------------------------+