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# ACER, INC.
AX65
Device Type Mainboard
Processor Pentium Pro
Processor Speed 150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 512MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB (located on Pentium Pro CPU)
BIOS Award
Dimensions 305mm x 244mm
I/O Options 32-bit PCI slots (5), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), IR connector, USB interface, ATX power
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+----------------+-------------|
| ATX power | ATX | IDE interface | JP15 |
| connector | | LED | |
|------------------+----------+----------------+-------------|
| Serial port 1 | CN1 | Soft off power | JP23/pins 1 |
| | | supply | & 2 |
|------------------+----------+----------------+-------------|
| PS/2 mouse port | CN2 | Power LED | JP23/pins 3 |
| | | | - 5 |
|------------------+----------+----------------+-------------|
| Parallel port | CN4 | Speaker | JP23/pins 7 |
| | | | - 10 |
|------------------+----------+----------------+-------------|
| Serial port 2 | CN5 | Green PC LED | JP23/pins |
| | | | 12 & 13 |
|------------------+----------+----------------+-------------|
| Chassis fan | J1 | Green PC | JP23/pins |
| power | | connector | 15 - 17 |
|------------------+----------+----------------+-------------|
| Floppy drive | J4 | Reset switch | JP23/pins |
| interface | | | 19 & 20 |
|------------------+----------+----------------+-------------|
| IDE interface 1 | J5 | 32-bit PCI | PC1 - PC5 |
| | | slots | |
|------------------+----------+----------------+-------------|
| IDE interface 2 | J6 | USB interface | USB |
|------------------+----------+----------------+-------------|
| IR connector | JP13 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | On board I/O enabled | JP6 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | On board I/O disabled | JP6 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Keyboard clock select ISA clock | JP7 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Keyboard clock select 12MHz | JP7 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | PS/2 mouse enabled | JP8 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | PS/2 mouse disabled | JP8 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP9 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP10 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP10 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Power switch type select toggle | JP14 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Power switch type select | JP14 | Pins 1 & 2, |
| | momentary | | 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 32M x 36 | None |
|------------------+--------------------+--------------------|
| 264MB | (2) 32M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 272MB | (2) 32M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 288MB | (2) 32M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 320MB | (2) 32M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 384MB | (2) 32M x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 512MB | (2) 32M x 36 | (2) 32M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium Pro CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP3 | JP4 | JP5 |
| speed | speed | | | | |
|----------+--------+------------+-------+-----------+-------|
| 150MHz | 60MHz | 2.5x | 3 & 4 | 3 & 4, 5 | 3 & 4 |
| | | | | & 6, 7 & | |
| | | | | 8 | |
|----------+--------+------------+-------+-----------+-------|
| 166MHz | 66MHz | 2.5x | 1 & 2 | 3 & 4, 5 | 1 & 2 |
| | | | | & 6, 7 & | |
| | | | | 8 | |
|----------+--------+------------+-------+-----------+-------|
| 180MHz | 60MHz | 3x | 3 & 4 | 1 & 2, 3 | 3 & 4 |
| | | | | & 4, 7 & | |
| | | | | 8 | |
|----------+--------+------------+-------+-----------+-------|
| 200MHz | 66MHz | 3x | 1 & 2 | 1 & 2, 3 | 1 & 2 |
| | | | | & 4, 7 & | |
| | | | | 8 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP1 |
|-------------------+----------------------------------------|
| » | Auto detect | Open |
|---+---------------+----------------------------------------|
| | 2.1v | Pins 1 & 2 closed |
|---+---------------+----------------------------------------|
| | 2.2v | Pins 3 & 4 closed |
|---+---------------+----------------------------------------|
| | 2.3v | Pins 1 & 2, 3 & 4 closed |
|---+---------------+----------------------------------------|
| | 2.4v | Pins 5 & 6 closed |
|---+---------------+----------------------------------------|
| | 2.5v | Pins 1 & 2, 5 & 6 closed |
|---+---------------+----------------------------------------|
| | 2.6v | Pins 3 & 4, 5 & 6 closed |
|---+---------------+----------------------------------------|
| | 2.7v | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|---+---------------+----------------------------------------|
| | 2.8v | Pins 7 & 8 closed |
|---+---------------+----------------------------------------|
| | 2.9v | Pins 1 & 2, 7 & 8 closed |
|---+---------------+----------------------------------------|
| | 3.0v | Pins 3 & 4, 7 & 8 closed |
|---+---------------+----------------------------------------|
| | 3.1v | Pins 1 & 2, 3 & 4, 7 & 8 closed |
|---+---------------+----------------------------------------|
| | 3.2v | Pins 5 & 6, 7 & 8 closed |
|---+---------------+----------------------------------------|
| | 3.3v | Pins 1 & 2, 5 & 6, 7 & 8 closed |
|---+---------------+----------------------------------------|
| | 3.4v | Pins 3 & 4, 5 & 6, 7 & 8 closed |
|---+---------------+----------------------------------------|
| | 3.5v | Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLASH BIOS SELECTION |
|------------------------------------------------------------|
| Setting | JP11 | JP12 |
|------------------+--------------------+--------------------|
| » | Enabled | Pins 1 & 2 closed | Pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+