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# ACER, INC.
PI1
Processor CX M1/Pentium
Processor Speed 75/90/100MHz
Chip Set Unidentified
Video Chip Set Cirrus Logic
Maximum Onboard 128MB
Memory
Maximum Video 2MB
Memory
Cache 256KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, green PC connector,
IDE interfaces (2), parallel port, PS/2 mouse
port, serial ports (2), feature connector, VGA
port, riser slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Feature | CN1 | IDE interface 1 | CN9 |
| connector | | | |
|---------------+----------+----------------------+----------|
| PS/2 mouse | CN2 | Front panel LEDs | J1 |
| port | | | |
|---------------+----------+----------------------+----------|
| Serial port 1 | CN3 | Front panel LEDs | J2 |
|---------------+----------+----------------------+----------|
| Serial port 2 | CN4 | IDE interface LED | J3 |
|---------------+----------+----------------------+----------|
| Parallel port | CN5 | IDE interface LED | J4 |
|---------------+----------+----------------------+----------|
| VGA port | CN6 | Green PC | JP15 |
| | | connector/reset | |
| | | switch | |
|---------------+----------+----------------------+----------|
| Floppy drive | CN7 | Riser slot | SL1 |
| interface | | | |
|---------------+----------+----------------------+----------|
| IDE interface | CN8 | | |
| 2 | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | BIOS type select OEM BIOS | JP1 | Pins 2 & 3 |
| | installed | | closed |
|---+-----------------------------------+-------+------------|
| | BIOS type select RESERVED BIOS | JP1 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Password disabled | JP2 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Password enabled | JP2 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | BIOS type select flash BIOS | JP3 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | BIOS type select EPROM | JP3 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | On board SMC665 enabled | JP6 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board SMC665 disabled | JP6 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | On board GD5434 enabled | JP7 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board GD5434 disabled | JP7 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | IDE interface enabled | JP9 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | IDE interface disabled | JP9 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | ADS# not delayed | JP11 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | ADS# delayed by one CPU clock | JP11 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Reset switch used as reset switch | JP15 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Reset switch used as green PC | JP15 | Pins 1 & 2 |
| | connector | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | None | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB cache is factory installed and is not |
| configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|----------------+------------------+------------------------|
| 1MB | 1MB | None |
|----------------+------------------+------------------------|
| 2MB | 1MB | (2) 256K x 16 |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU speed | Clock speed | JP8 |
|------------------+--------------------+--------------------|
| 75MHz | 50MHz | Pins 1 & 4 closed |
|------------------+--------------------+--------------------|
| 90MHz | 60MHz | Pins 2 & 5 closed |
|------------------+--------------------+--------------------|
| 100MHz | 66MHz | Pins 3 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP12 |
|----------------------------+-------------------------------|
| Cyrix | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| Intel | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP13 |
|----------------------------+-------------------------------|
| 3.3825v | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3.5250v | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CORE CLOCK RATIO SELECTION |
|------------------------------------------------------------|
| Ratio | JP14 |
|----------------------------+-------------------------------|
| 3/2 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2x | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JP4 | JP5 |
|------------------+--------------------+--------------------|
| » | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----+-------------+--------------------+--------------------|
| | 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+