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# AAEON TECHNOLOGY, INC.
PCM-4890
Device Single board computer
Type
Processor CX486DX2/AM486DX2/80486DX2/CX486DX4/AM486DX4/80486DX4/ CX
5X86/AM 5X86
Processor 33/40/66(internal)/80(internal)/100(internal)/120(internal)/
Speed 133(internal)MHz
Chip Set VIA
Video Chip Chips and Technology
Set
Maximum 64MB (EDO supported)
Onboard
Memory
Maximum 1MB
Video
Memory
Cache 128/256/512KB
BIOS Award
Dimensions 202mm x 146mm
I/O AUI connector, Ethernet 10BaseT connector, floppy drive
Options interface, IDE interface, parallel port, PS/2 mouse
interface, serial ports (2), VGA port, PC/104 connectors (2)
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| VGA interface | CN1 | Main power | CN10 |
| | | connector | |
|----------------------+----------+---------------+----------|
| Flat panel connector | CN2 | AUI connector | CN11 |
|----------------------+----------+---------------+----------|
| Chassis fan power | CN3 | Parallel port | CN12 |
|----------------------+----------+---------------+----------|
| PC/104 connector | CN4 | Ethernet | CN13 |
| | | 10BaseT | |
| | | connector | |
|----------------------+----------+---------------+----------|
| Front panel | CN5 | Serial port | CN14 |
| connector | | | |
|----------------------+----------+---------------+----------|
| PC/104 connector | CN6 | Floppy drive | CN15 |
| | | interface | |
|----------------------+----------+---------------+----------|
| Power connector | CN7 | Ethernet LED | J26 |
|----------------------+----------+---------------+----------|
| PS/2 mouse/keyboard | CN8 | Ethernet LED | J28 |
| interface | | | |
|----------------------+----------+---------------+----------|
| IDE interface | CN9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | J8 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J8 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Cache type select write through | J12 | Closed |
|---+---------------------------------+-------+--------------|
| | Cache type select write back | J12 | Open |
|---+---------------------------------+-------+--------------|
| | Watchdog timer reset | J19 | Open |
|---+---------------------------------+-------+--------------|
| | Watchdog timer IRQ15 | J19 | Closed |
|---+---------------------------------+-------+--------------|
| | Buzzer enabled | J21 | Closed |
|---+---------------------------------+-------+--------------|
| | Buzzer disabled | J21 | Open |
|---+---------------------------------+-------+--------------|
| » | Parallel port IRQ select IRQ7 | J23 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Parallel port IRQ select IRQ5 | J23 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (1) 256K x 36 | None |
|------------------+--------------------+--------------------|
| 2MB | (1) 512K x 36 | None |
|------------------+--------------------+--------------------|
| 2MB | (1) 256K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 3MB | (1) 512K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (1) 512K x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 5MB | (1) 1M x 36 | (1) 256K 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 |
|------------------+--------------------+--------------------|
| 9MB | (1) 2M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (1) 2M x 36 | (1) 512K x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 17MB | (1) 4M x 36 | (1) 256K 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 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 33MB | (1) 8M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 34MB | (1) 8M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 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 |
|--------------------------------------------------|
| Note: The location of the cache is unidentified. |
+--------------------------------------------------+
+---------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|---------------------------------------------------------|
| Note: The location of the video memory is unidentified. |
+---------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | J16 | J17 | J18 |
|---------+----------------+----------------+----------------|
| 33MHz | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 40MHz | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 66iMHz | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 80iMHz | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 100iMHz | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 120iMHz | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 133iMHz | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J3 | J4 | J5 |
|--------------+------------------+-------------+------------|
| CX486DX2 | Open | 1 & 2, 3 & | Open |
| | | 4, 5 & 6, 7 | |
| | | & 8, 9 & 10 | |
|--------------+------------------+-------------+------------|
| AM486DX2 | Open | Open | 1 & 2, 3 & |
| | | | 4, 5 & 6 |
|--------------+------------------+-------------+------------|
| 80486DX2 | 1 & 2, 3 & 4, 5 | Open | Open |
| | & 6, 7 & 8, 9 & | | |
| | 10 | | |
|--------------+------------------+-------------+------------|
| CX486DX4 | 1 & 2, 3 & 4, 5 | Open | Open |
| | & 6, 7 & 8, 9 & | | |
| | 10 | | |
|--------------+------------------+-------------+------------|
| AM486DX4-100 | 1 & 2, 3 & 4, 5 | Open | Open |
| | & 6, 7 & 8, 9 & | | |
| | 10 | | |
|--------------+------------------+-------------+------------|
| AM486DX4-120 | 1 & 2, 3 & 4, 5 | Open | Open |
| | & 6, 7 & 8, 9 & | | |
| | 10 | | |
|--------------+------------------+-------------+------------|
| 80486DX4 | 1 & 2, 3 & 4, 5 | Open | Open |
| | & 6, 7 & 8, 9 & | | |
| | 10 | | |
|--------------+------------------+-------------+------------|
| CX 5X86 | Open | 1 & 2, 3 & | Open |
| | | 4, 5 & 6, 7 | |
| | | & 8, 9 & 10 | |
|--------------+------------------+-------------+------------|
| AM 5X86 | 1 & 2, 3 & 4, 5 | Open | Open |
| | & 6, 7 & 8, 9 & | | |
| | 10 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON'T) |
|------------------------------------------------------------|
| Type | J7 | J9 | J10 | J11 |
|----------------+----------+----------+----------+----------|
| CX486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| AM486DX2 | 2 & 3 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| 80486DX2 | 2 & 3 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| CX486DX4 | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| AM486DX4-100 | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| AM486DX4-120 | 2 & 3 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| 80486DX4 | 2 & 3 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| CX 5X86 | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
|----------------+----------+----------+----------+----------|
| AM 5X86 | 2 & 3 | 1 & 2 | 1 & 2 | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU MULTIPLIER SELECTION |
|------------------------------------------------------------|
| Multiplier | J13 | J14 |
|--------------------+-------------------+-------------------|
| 1x | Open | Open |
|--------------------+-------------------+-------------------|
| 2x | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | J1 |
|----------------------------+-------------------------------|
| 3v | Pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 5v | Pins 3 & 5, 4 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | J2 |
|----------------------------+-------------------------------|
| » | 3.3v | Pins 1 & 2 closed |
|---+------------------------+-------------------------------|
| | 3.45v | Pins 3 & 4 closed |
|---+------------------------+-------------------------------|
| | 3.6v | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | J6 | J22 |
|------------------+--------------------+--------------------|
| » | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----+-------------+--------------------+--------------------|
| | 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 SELECTION |
|------------------------------------------------------------|
| Setting | J27 |
|----------------------------+-------------------------------|
| RS-232 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| RS-422 | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| RS-485 | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT VOLTAGE SELECTION |
|------------------------------------------------------------|
| Setting | J29 | J30 | J31 | J32 |
|---------+-------------+------------+------------+----------|
| RS-232 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+-------------+------------+------------+----------|
| RS-422 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & |
| | closed | closed | closed | 3 closed |
|---------+-------------+------------+------------+----------|
| RS-485 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & |
| | closed | closed | closed | 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT COM3 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J24 |
|----------------------------+-------------------------------|
| IRQ5 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| IRQ10 | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT COM4 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J25 |
|----------------------------+-------------------------------|
| IRQ5 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| IRQ10 | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT COM3/4 VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J33 | J34 |
|------------------+--------------------+--------------------|
| Ring | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 5v | Pins 3 & 4 closed | Pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| 12v | Pins 5 & 6 closed | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| WATCHDOG TIMER SELECTION |
|------------------------------------------------------------|
| Setting | J15 | J20 |
|--------------------+-------------------+-------------------|
| Enabled | Closed | Closed |
|--------------------+-------------------+-------------------|
| Disabled | Open | Open |
+------------------------------------------------------------+