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# ACER, INC.
AP57
Device Type Mainboard
Processor CX 6X86/AM K5/AM K6/Pentium/Pentium MMX
Processor Speed 75/90/100/120/133/150/166/200/233MHz
Chip Set SIS
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 250mm x 220mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector, USB connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+-----------+-------------------+-----------|
| Power LED & | C1/pins 1 | Parallel port | CN3 |
| keylock | – 5 | | |
|----------------+-----------+-------------------+-----------|
| Speaker | C1/pins 7 | Floppy drive | CN4 |
| | – 10 | interface | |
|----------------+-----------+-------------------+-----------|
| Green PC LED | C1/pins | IDE interface 2 | CN5 |
| | 12 & 13 | | |
|----------------+-----------+-------------------+-----------|
| Green PC | C1/pins | IDE interface 1 | CN6 |
| connector | 15 – 17 | | |
|----------------+-----------+-------------------+-----------|
| Reset switch | C1/pins | PS/2 mouse | CN7 |
| | 19 & 20 | interface | |
|----------------+-----------+-------------------+-----------|
| IDE interface | C2 | IR connector | IR1 |
| LED | | | |
|----------------+-----------+-------------------+-----------|
| CPU fan power | C3 | 32-bit PCI slots | PC1 – PC4 |
|----------------+-----------+-------------------+-----------|
| Serial port 1 | CN1 | USB connector | USB |
|----------------+-----------+-------------------+-----------|
| Serial port 2 | CN2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP14 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP14 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| » | On board I/O enabled | JP18 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | On board I/O disabled | JP18 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| » | PS/2 mouse enabled | JP20 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | PS/2 mouse disabled | JP20 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CPU burst mode select linear | JP22 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CPU burst mode select toggle | JP22 | Pins 2 & 3 |
| | | | 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 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 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 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 256KB | (2) 32K x 32 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP4 | JP13 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 120MHz | 50MHz | 2x | 1 & | 1 & | 2 & | 2 & | 1 & |
| | | | 2 | 2 | 3 | 3 | 2, 5 |
| | | | | | | | & 6 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 150MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 2 & | 1 & |
| | | | 3 | 2 | 2 | 3 | 2, 3 |
| | | | | | | | & 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 3 & |
| | | | 3 | 2 | 3 | 2 | 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP4 | JP13 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 90MHz | 60MHz | 1.5x | 1 & | 1 & | 1 & | 2 & | 1 & |
| | | | 2 | 2 | 2 | 3 | 2, 3 |
| | | | | | | | & 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 100MHz | 66MHz | 1.5x | 1 & | 1 & | 2 & | 1 & | 3 & |
| | | | 2 | 2 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 120MHz | 60MHz | 1.5x | 1 & | 1 & | 1 & | 2 & | 1 & |
| | | | 2 | 2 | 2 | 3 | 2, 3 |
| | | | | | | | & 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 133MHz | 66MHz | 1.5x | 1 & | 1 & | 2 & | 1 & | 3 & |
| | | | 2 | 2 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 66MHz | 1.75x | 2 & | 2 & | 2 & | 1 & | 3 & |
| | | | 3 | 3 | 3 | 2 | 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP4 | JP13 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 66MHz | 2.5x | 2 & | 2 & | 2 & | 1 & | 3 & |
| | | | 3 | 3 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 2 & | 1 & | 3 & |
| | | | 2 | 3 | 3 | 2 | 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP4 | JP13 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 75MHz | 50MHz | 1.5x | 1 & | 1 & | 2 & | 2 & | 1 & |
| | | | 2 | 2 | 3 | 3 | 2, 5 |
| | | | | | | | & 6 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 90MHz | 60MHz | 1.5x | 1 & | 1 & | 1 & | 2 & | 1 & |
| | | | 2 | 2 | 2 | 3 | 2, 3 |
| | | | | | | | & 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 100MHz | 66MHz | 1.5x | 1 & | 1 & | 2 & | 1 & | 3 & |
| | | | 2 | 2 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 120MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 2 & | 1 & |
| | | | 3 | 2 | 2 | 3 | 2, 3 |
| | | | | | | | & 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 133MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 3 & |
| | | | 3 | 2 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 150MHz | 60MHz | 2.5x | 2 & | 2 & | 1 & | 2 & | 1 & |
| | | | 3 | 3 | 2 | 3 | 2, 3 |
| | | | | | | | & 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 66MHz | 2.5x | 2 & | 2 & | 2 & | 1 & | 3 & |
| | | | 3 | 3 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 2 & | 1 & | 3 & |
| | | | 2 | 3 | 3 | 2 | 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP4 | JP13 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 150MHz | 60MHz | 2.5x | 2 & | 2 & | 1 & | 2 & | 1 & |
| | | | 3 | 3 | 2 | 3 | 2, 3 |
| | | | | | | | & 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 66MHz | 2.5x | 2 & | 2 & | 2 & | 1 & | 3 & |
| | | | 3 | 3 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 2 & | 1 & | 3 & |
| | | | 2 | 3 | 3 | 2 | 4 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 233MHz | 66MHz | 3.5x | 1 & | 1 & | 2 & | 1 & | 3 & |
| | | | 2 | 2 | 3 | 2 | 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP7 | JP8 | JP9 | JP10 | JP11 |
|-----------+---------+---------+----------+-------+---------|
| 3.45v | 1 & 2 | 1 & 2 | Closed | Open | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP7 | JP8 | JP9 | JP10 | JP11 |
|---------+--------+-------+------+--------+--------+--------|
| 3.45v | 2.8v | 7 & 8 | 1 & | Open | Closed | Open |
| | | | 2 | | | |
|---------+--------+-------+------+--------+--------+--------|
| 3.45v | 2.9v | 5 & 6 | 1 & | Open | Closed | Open |
| | | | 2 | | | |
|---------+--------+-------+------+--------+--------+--------|
| 3.45v | 3.52v | 3 & 4 | 1 & | Closed | Open | Closed |
| | | | 2 | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+