
ACER, INC.

AP5S

Device Type          Mainboard
Processor            Pentium
Processor Speed      75/90/100/120/133/150/166/200MHz
Chip Set             SIS
Video Chip Set       None
Maximum Onboard      512MB (EDO supported)
Memory
Maximum Video Memory None
Cache                256KB
BIOS                 Award
Dimensions           280mm 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

  PS/2 mouse               CN4         Green PC LED        CN11/pins 12 &
  interface                                                     13

  Serial port 1            CN5         Green PC           CN11/pins 15 
                                       connector          17

  Floppy drive             CN6         Reset switch       CN11/pins 19 &
  interface                                               20

  IDE interface 1          CN7         CPU fan power           JP17

  Serial port 2            CN8         IR connector            JP21

  Parallel port            CN9         IDE interface LED       JP22

  IDE interface 2         CN10         32-bit PCI slots      PC1  PC4

  Power LED &         CN11/pins 1     USB connector            USB
  keylock                   5

  Speaker             CN11/pins 7 
                           10

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           JP2          Unidentified
      alter

     Flash BIOS voltage select 5v          JP8        Pins 2 & 3 closed

      Flash BIOS voltage select 12v         JP8        Pins 1 & 2 closed

     Factory configured - do not           JP9          Unidentified
      alter

     PS/2 mouse enabled                   JP10        Pins 1 & 2 closed

      PS/2 mouse disabled                  JP10        Pins 2 & 3 closed

     Factory configured - do not          JP11          Unidentified
      alter

     CMOS memory normal operation         JP12        Pins 1 & 2 closed

      CMOS memory clear                    JP12        Pins 2 & 3 closed

      On board I/O enabled                 JP16        Pins 1 & 2 closed

      On board I/O disabled                JP16        Pins 2 & 3 closed

     Factory configured - do not          JP23          Unidentified
      alter

     Factory configured - do not          JP24          Unidentified
      alter

     Factory configured - do not          JP25          Unidentified
      alter

             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

          SIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1

      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) 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

      Size          Bank 0

     256KB       (2) 32K x 32

         CACHE TYPE CONFIGURATION

        Type                 JP1

     Linear mode      Pins 1 & 2 closed

   Interleave mode    Pins 2 & 3 closed

                            CPU SPEED SELECTION

     CPU       Clock     Multiplier     JP3      JP4     JP14      JP15
   speed       speed

   75MHz       50MHz        1.5x        2 & 3   2 & 3    2 & 3     2 & 3

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

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

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

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

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

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

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

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

         Type                     JP5                      JP13

         P54C            Pins 1 & 2, 3 & 4, 5 &    Pins 1 & 2, 3 & 4, 5 &
                               6 closed                  6 closed

           CPU VOLTAGE SELECTION

  Voltage     JP18       JP19      JP20

    VRE      Closed      Open      Open

    STD       Open      Closed     Open

                    DMA CHANNEL SELECTION

       Channel               JP6                  JP7

          1            Pins 2 & 3 closed   Pins 2 & 3 closed

          3            Pins 1 & 2 closed   Pins 1 & 2 closed

