
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

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Power LED &          C1/pins 1  5   Parallel port             CN3
  keylock

  Speaker               C1/pins 7     Floppy drive              CN4
                            10         interface

  Green PC LED         C1/pins 12 &    IDE interface 2           CN5
                            13

  Green PC connector   C1/pins 15     IDE interface 1           CN6
                       17

  Reset switch         C1/pins 19 &    PS/2 mouse                CN7
                       20              interface

  IDE interface LED         C2         IR connector              IR1

  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 (CONT)

      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       2      3      3     5 & 6

  150MHz      60MHz         2x         2 &    1 &    1 &    2 &    1 & 2,
                                       3       2      2      3     3 & 4

  166MHz      66MHz         2x         2 &    1 &    2 &    1 &    3 & 4
                                       3       2      3      2

  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      2      3     3 & 4

  100MHz      66MHz        1.5x        1 &    1 &    2 &    1 &    3 & 4
                                       2       2      3      2

  120MHz      60MHz        1.5x        1 &    1 &    1 &    2 &    1 & 2,
                                       2       2      2      3     3 & 4

  133MHz      66MHz        1.5x        1 &    1 &    2 &    1 &    3 & 4
                                       2       2      3      2

  166MHz      66MHz       1.75x        2 &    2 &    2 &    1 &    3 & 4
                                       3       3      3      2

  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 & 4
                                       3       3      3      2

  200MHz      66MHz         3x         1 &    2 &    2 &     1 &   3 & 4
                                       2       3      3      2

  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       2      3      3     5 & 6

   90MHz      60MHz        1.5x        1 &    1 &    1 &    2 &    1 & 2,
                                       2       2      2      3     3 & 4

  100MHz      66MHz        1.5x        1 &    1 &    2 &    1 &    3 & 4
                                       2       2      3      2

  120MHz      60MHz         2x         2 &    1 &    1 &    2 &    1 & 2,
                                       3       2      2      3     3 & 4

  133MHz      66MHz         2x         2 &    1 &    2 &    1 &    3 & 4
                                       3       2      3      2

  150MHz      60MHz        2.5x        2 &    2 &    1 &    2 &    1 & 2,
                                       3       3      2      3     3 & 4

  166MHz      66MHz        2.5x        2 &    2 &    2 &    1 &    3 & 4
                                       3       3      3      2

  200MHz      66MHz         3x         1 &    2 &    2 &    1 &    3 & 4
                                       2       3      3      2

  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 & 2,
                                       3       3      2      3     3 & 4

  166MHz      66MHz        2.5x        2 &    2 &    2 &    1 &    3 & 4
                                       3       3      3      2

  200MHz      66MHz         3x         1 &    2 &    2 &    1 &    3 & 4
                                       2       3      3      2

  233MHz      66MHz        3.5x        1 &    1 &    2 &    1 &    3 & 4
                                       2       2      3      2

  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 & 2      Open      Closed      Open

   3.45v      2.9v      5 & 6     1 & 2      Open      Closed      Open

   3.45v     3.52v      3 & 4     1 & 2     Closed      Open      Closed

  Note: Pins designated should be in the closed position.

