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# ACER, INC.
AP5T (REV. 2.0)
Device Type Mainboard
Processor CX 6X86/CX 6X86L/CX 686MX/IDT C6/AM K5/AM
K6/Pentium/
Pentium MMX
Processor Speed 90/100/120/133/150/166/200/233/266MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 254mm x 218mm
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), USB connector, IR 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 12 | IDE interface 1 | CN5 |
| | & 13 | | |
|----------------+------------+------------------+-----------|
| Green PC | C1/pins 15 | IDE interface 2 | CN6 |
| connector | - 17 | | |
|----------------+------------+------------------+-----------|
| Reset switch | C1/pins 19 | PS/2 mouse | CN7 |
| | & 20 | interface | |
|----------------+------------+------------------+-----------|
| IDE interface | C2 | IR connector | IR1 |
| LED | | | |
|----------------+------------+------------------+-----------|
| Chassis fan | C3 | 32-bit PCI slots | PC1 – PC4 |
| power | | | |
|----------------+------------+------------------+-----------|
| Serial port 2 | CN1 | USB connector | USB |
|----------------+------------+------------------+-----------|
| Serial port 1 | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 2 | Bank 3 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (1) 16M x 64 | None |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 256MB | (1) 16M x 64 | (1) 16M x 64 |
|------------------------------------------------------------|
| Note: Board accepts SDRAM 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 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
|150MHz | 60MHz | 2x |2 & 3|1 & 2|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|166MHz | 66MHz | 2x |2 & 3|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|200MHz | 75MHz | 2x |2 & 3|1 & 2|1 & 2|1 & |2 & |2 & |
| | | | | | | 2 | 3 | 3 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP3 |JP4 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
|150MHz | 60MHz | 2x |2 & 3|1 & 2|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|166MHz | 66MHz | 2x |2 & 3|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|200MHz | 75MHz | 2x |2 & 3|1 & 2|1 & 2|1 & |2 & |2 & |
| | | | | | | 2 | 3 | 3 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP3 |JP4 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
|166MHz | 60MHz | 2.5x |2 & 3|2 & 3|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|200MHz | 66MHz | 2.5x |2 & 3|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|233MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|266MHz | 66MHz | 3.5x |1 & 2|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IDT C6) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP3 |JP4 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
|150MHz | 75MHz | 2x |2 & 3|1 & 2|1 & 2|1 & |2 & |2 & |
| | | | | | | 2 | 3 | 3 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|180MHz | 60MHz | 3x |1 & 2|2 & 3|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|200MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP3 |JP4 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|100MHz | 66MHz | 1.5x |1 & 2|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|120MHz | 60MHz | 1.5x |1 & 2|1 & 2|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|133MHz | 66MHz | 1.5x |1 & 2|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|166MHz | 66MHz | 1.75x |2 & 3|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP3 |JP4 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
|166MHz | 66MHz | 2.5x |2 & 3|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|200MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|233MHz | 66MHz | 3.5x |1 & 2|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP3 |JP4 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|100MHz | 66MHz | 1.5x |1 & 2|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|120MHz | 60MHz | 2x |2 & 3|1 & 2|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|133MHz | 66MHz | 2x |2 & 3|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|150MHz | 60MHz | 2.5x |2 & 3|2 & 3|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|166MHz | 66MHz | 2.5x |2 & 3|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|200MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP3 |JP4 |JP5 |JP6 |
| speed | speed | | | | | | | |
|-------+--------+----------+-----+-----+-----+----+----+----|
|150MHz | 60MHz | 2.5x |2 & 3|2 & 3|1 & 2|1 & |2 & |1 & |
| | | | | | | 2 | 3 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|166MHz | 66MHz | 2.5x |2 & 3|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|200MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------+--------+----------+-----+-----+-----+----+----+----|
|233MHz | 66MHz | 3.5x |1 & 2|1 & 2|1 & 2|2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP11 |
|----------------------------+-------------------------------|
| 3.45v | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP11 |
|-------------------+------------------+---------------------|
| 3.45v | 2.0v | Pins 11 & 12 closed |
|-------------------+------------------+---------------------|
| 3.45v | 2.2v | Pins 11 & 12 closed |
|-------------------+------------------+---------------------|
| 3.45v | 2.5v | Pins 11 & 12 closed |
|-------------------+------------------+---------------------|
| 3.45v | 2.8v | Pins 7 & 8 closed |
|-------------------+------------------+---------------------|
| 3.45v | 2.9v | Pins 5 & 6 closed |
|-------------------+------------------+---------------------|
| 3.45v | 3.2v | Pins 9 & 10 closed |
|-------------------+------------------+---------------------|
| 3.45v | 3.52v | Pins 3 & 4 closed |
+------------------------------------------------------------+