
ACER, INC.

AP43

Processor  AM486SX/80486SX/SL80486SX/CX486DX/AM846DX/80486DX/
           SL80486DX/CX486DX2/CX486DX2(M7P/O)/TI486DX2/AM486DX2/
           (SL)AM486DX2/80486DX2/SL80486DX2/CX486DX4(M7P/O)/
           CX486DX4(DX4P/O)/AM486DX4(V8T)/AM486DX4S(SV8T)/
           AM486DX4S(SV8B)/80486DX4(WT)/80486DX4(WB)/P24D/P24T/ CX5X86
Processor  25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   SIS
Video Chip None
Set
Maximum    128MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      128/256/512KB
BIOS       AMI
Dimensions 250mm x 220mm
I/O        32-bit PCI slots (3), floppy drive interface, green PC
Options    connector, IDE interfaces (2), parallel port, serial ports (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                 Location

  Serial port 2            CN1        Speaker                J7 pins 7 -
                                                                 10

  Serial port 1            CN2        Turbo/green PC LED     J7 pins 12 &
                                                                 13

  Chassis fan power        CN3        Turbo switch           J7 pins 15 -
                                                                 17

  Chassis fan power        CN4        Reset switch           J7 pins 19 &
                                                                 20

  Floppy drive             CN5        External battery           J8
  interface

  Parallel port            CN6        Green PC connector        JP30

  IDE interface 2          CN7        IDE interface LED         JP31

  IDE interface 1          CN8        32-bit PCI slots        PC1 - PC3

  Power LED & keylock   J7 pins 1 -
                            5

  Note: If connector for J7 is 12-pin, connect red wire to pin 11.

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not          JP11          Unidentified
      alter

     Factory configured - do not          JP12          Unidentified
      alter

      On board I/O enabled                 JP21        Pins 1 & 2 closed

      On board I/O disabled                JP21        Pins 2 & 3 closed

      Flash BIOS voltage select 12v        JP24        Pins 2 & 3 closed

      Flash BIOS voltage select 5v         JP24        Pins 1 & 2 closed

     CMOS memory normal operation         JP28        Pins 1 & 2 closed

      CMOS memory clear                    JP28        Pins 2 & 3 closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (1) 256K x        None           None           None
                    36

     2MB        (1) 512K x        None           None           None
                    36

     2MB        (1) 256K x     (1) 256K x        None           None
                    36             36

     3MB        (1) 512K x     (1) 256K x        None           None
                    36             36

     3MB        (1) 256K x     (1) 256K x     (1) 256K x        None
                    36             36             36

     3MB        (1) 256K x     (1) 512K x        None           None
                    36             36

     4MB       (1) 1M x 36        None           None           None

     4MB        (1) 512K x     (1) 256K x     (1) 256K x        None
                    36             36             36

     4MB        (1) 512K x     (1) 512K x        None           None
                    36             36

     4MB        (1) 256K x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     5MB       (1) 1M x 36     (1) 256K x        None           None
                                   36

     5MB        (1) 512K x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     5MB        (1) 256K x     (1) 512K x     (1) 512K x        None
                    36             36             36

     5MB        (1) 256K x    (1) 1M x 36        None           None
                    36

     6MB       (1) 1M x 36     (1) 256K x     (1) 256K x        None
                                   36             36

     6MB       (1) 1M x 36     (1) 512K x        None           None
                                   36

     6MB        (1) 512K x     (1) 512K x     (1) 512K x        None
                    36             36             36

     6MB        (1) 512K x    (1) 1M x 36        None           None
                    36

     7MB       (1) 1M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

                        DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     7MB        (1) 256K x     (1) 512K x     (1) 512K x    (1) 512K x 36
                    36             36             36

     8MB       (1) 2M x 36        None           None           None

     8MB       (1) 1M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

     8MB       (1) 1M x 36    (1) 1M x 36        None           None

     8MB        (1) 512K x     (1) 512K x     (1) 512K x    (1) 512K x 36
                    36             36             36

     9MB       (1) 2M x 36     (1) 256K x        None           None
                                   36

     9MB        (1) 256K x    (1) 1M x 36    (1) 1M x 36        None
                    36

     9MB        (1) 256K x    (1) 2M x 36        None           None
                    36

     10MB      (1) 2M x 36     (1) 256K x     (1) 256K x        None
                                   36             36

     10MB      (1) 2M x 36     (1) 512K x        None           None
                                   36

     10MB      (1) 1M x 36     (1) 512K x     (1) 512K x    (1) 512K x 36
                                   36             36

     10MB       (1) 512K x    (1) 1M x 36    (1) 1M x 36        None
                    36

     10MB       (1) 512K x    (1) 2M x 36        None           None
                    36

     11MB      (1) 2M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     12MB      (1) 2M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

     12MB      (1) 2M x 36    (1) 1M x 36        None           None

     12MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36        None

     12MB      (1) 1M x 36    (1) 2M x 36        None           None

     13MB       (1) 256K x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

     14MB      (1) 2M x 36     (1) 512K x     (1) 512K x    (1) 512K x 36
                                   36             36

     14MB       (1) 512K x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

     16MB      (1) 4M x 36        None           None           None

     16MB      (1) 2M x 36    (1) 1M x 36    (1) 1M x 36        None

     16MB      (1) 2M x 36    (1) 2M x 36        None           None

     16MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     17MB      (1) 4M x 36     (1) 256K x        None           None
                                   36

     17MB       (1) 256K x    (1) 2M x 36    (1) 2M x 36        None
                    36

     17MB       (1) 256K x    (1) 4M x 36        None           None
                    36

     18MB      (1) 4M x 36     (1) 256K x     (1) 256K x        None
                                   36             36

     18MB      (1) 4M x 36     (1) 512K x        None           None
                                   36

     18MB       (1) 512K x    (1) 2M x 36    (1) 2M x 36        None
                    36

     18MB       (1) 512K x    (1) 4M x 36        None           None
                    36

     19MB      (1) 4M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     20MB      (1) 4M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

     20MB      (1) 4M x 36    (1) 1M x 36        None           None

     20MB      (1) 2M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     20MB      (1) 1M x 36    (1) 2M x 36    (1) 2M x 36        None

     20MB      (1) 1M x 36    (1) 4M x 36        None           None

     22MB      (1) 4M x 36     (1) 512K x     (1) 512K x    (1) 512K x 36
                                   36             36

     24MB      (1) 4M x 36    (1) 1M x 36    (1) 1M x 36        None

     24MB      (1) 4M x 36    (1) 2M x 36        None           None

     24MB      (1) 2M x 36    (1) 2M x 36    (1) 2M x 36        None

                        DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     24MB      (1) 2M x 36    (1) 4M x 36        None           None

     25MB       (1) 256K x    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36
                    36

     26MB       (1) 512K x    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36
                    36

     28MB      (1) 4M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     28MB      (1) 1M x 36    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

     32MB      (1) 8M x 36        None           None           None

     32MB      (1) 4M x 36    (1) 2M x 36    (1) 2M x 36        None

     32MB      (1) 4M x 36    (1) 4M x 36        None           None

     32MB      (1) 2M x 36    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

     33MB      (1) 8M x 36     (1) 256K x        None           None
                                   36

     33MB       (1) 256K x    (1) 4M x 36    (1) 4M x 36        None
                    36

     33MB       (1) 256K x    (1) 8M x 36        None           None
                    36

     34MB      (1) 8M x 36     (1) 256K x     (1) 256K x        None
                                   36             36

     34MB      (1) 8M x 36     (1) 512K x        None           None
                                   36

     34MB       (1) 512K x    (1) 4M x 36    (1) 4M x 36        None
                    36

     34MB       (1) 512K x    (1) 8M x 36        None           None
                    36

     35MB      (1) 8M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     36MB      (1) 8M x 36     (1) 512K x     (1) 512K x        None
                                   36             36

     36MB      (1) 8M x 36    (1) 1M x 36        None           None

     36MB      (1) 1M x 36    (1) 4M x 36    (1) 4M x 36        None

     36MB      (1) 1M x 36    (1) 8M x 36        None           None

     38MB      (1) 8M x 36     (1) 512K x     (1) 512K x    (1) 512K x 36
                                   36             36

     40MB      (1) 8M x 36    (1) 1M x 36    (1) 1M x 36        None

     40MB      (1) 8M x 36    (1) 2M x 36        None           None

     40MB      (1) 4M x 36    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

     40MB      (1) 2M x 36    (1) 4M x 36    (1) 4M x 36        None

     40MB      (1) 2M x 36    (1) 8M x 36        None           None

     44MB      (1) 8M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     48MB      (1) 8M x 36    (1) 2M x 36    (1) 2M x 36        None

     48MB      (1) 8M x 36    (1) 4M x 36        None           None

     48MB      (1) 4M x 36    (1) 4M x 36    (1) 4M x 36        None

     48MB      (1) 4M x 36    (1) 8M x 36        None           None

     49MB       (1) 256K x    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36
                    36

     50MB       (1) 512K x    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36
                    36

     52MB      (1) 1M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     56MB      (1) 8M x 36    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

     56MB      (1) 2M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     64MB      (1) 8M x 36    (1) 4M x 36    (1) 4M x 36        None

     64MB      (1) 8M x 36    (1) 8M x 36        None           None

     64MB      (1) 4M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     64MB      (1) 16M x 36       None           None           None

     65MB       (1) 256K x    (1) 8M x 36    (1) 8M x 36        None
                    36

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     65MB       (1) 16M x 36    (1) 256K x       None           None
                                   36

     66MB       (1) 16M x 36    (1) 256K x     (1) 256K x       None
                                   36             36

     66MB       (1) 16M x 36    (1) 512K x       None           None
                                   36

     67MB       (1) 16M x 36    (1) 256K x     (1) 256K x   (1) 256K x 36
                                   36             36

     68MB       (1) 16M x 36    (1) 512K x     (1) 512K x       None
                                   36             36

     68MB       (1) 16M x 36   (1) 1M x 36       None           None

     68MB       (1) 1M x 36    (1) 8M x 36    (1) 8M x 36       None

     70MB       (1) 16M x 36    (1) 512K x     (1) 512K x   (1) 512K x 36
                                   36             36

     72MB       (1) 16M x 36   (1) 2M x 36       None           None

     72MB       (1) 2M x 36    (1) 8M x 36    (1) 8M x 36       None

     76MB       (1) 16M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     80MB       (1) 16M x 36   (1) 2M x 36    (1) 2M x 36       None

     80MB       (1) 4M x 36    (1) 8M x 36    (1) 8M x 36       None

     88MB       (1) 16M x 36   (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     96MB       (1) 16M x 36   (1) 4M x 36    (1) 4M x 36       None

     96MB       (1) 16M x 36   (1) 8M x 36       None           None

     96MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36       None

     97MB        (1) 256K x    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36
                     36

     98MB        (1) 512K x    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36
                     36

    100MB       (1) 1M x 36    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

    104MB       (1) 2M x 36    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

    112MB       (1) 4M x 36    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

    128MB       (1) 16M x 36   (1) 8M x 36    (1) 8M x 36       None

    128MB       (1) 16M x 36   (1) 16M x 36      None           None

    128MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

  Note: Board also accepts x 32 SIMMs. The location of the banks is
  unidentified.

                            CACHE CONFIGURATION

       Size              Bank 0            Bank 1              TAG

       128KB          (4) 32K x 8           None         (1) 16K/32K x 8

     256KB (A)        (4) 32K x 8        (4) 32K x 8     (1) 16K/32K x 8

     256KB (B)        (4) 64K x 8           None         (1) 16K/32K x 8

     512KB (A)        (4) 64K x 8        (4) 64K x 8       (1) 32K x 8

     512KB (B)        (4) 128K x 8          None           (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

     Size         JP1         JP2         JP3         JP4          JP5

    128KB       1 & 2, 3     1 & 2       2 & 3       1 & 2        1 & 2
                  & 4

  256KB (A)     2 & 3, 4     2 & 3       2 & 3       1 & 2        2 & 3
                  & 5

  256KB (B)     1 & 2, 3     1 & 2       1 & 2       1 & 2        2 & 3
                  & 4

  512KB (A)     2 & 3, 4     2 & 3       2 & 3       2 & 3        2 & 3
                  & 5

  512KB (B)     1 & 2, 3     1 & 2       2 & 3       2 & 3        2 & 3
                  & 4

  Note: Pins designated should be in the closed position.

                            CPU SPEED SELECTION

      Speed              JP25               JP26               JP27

      25MHz            Pins 2 & 3        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

      33MHz            Pins 1 & 2        Pins 1 & 2         Pins 1 & 2
                        closed             closed             closed

      40MHz            Pins 1 & 2        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

      50iMHz           Pins 2 & 3        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

      66iMHz           Pins 1 & 2        Pins 1 & 2         Pins 1 & 2
                        closed             closed             closed

      75iMHz           Pins 2 & 3        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

     100iMHz           Pins 1 & 2        Pins 1 & 2         Pins 1 & 2
                        closed             closed             closed

                            CPU TYPE SELECTION

       Type            JP6           JP7           JP8            JP9

     AM486SX           Open       Pins 2 & 3       Open          Open
                                    closed

     80486SX           Open       Pins 2 & 3       Open          Open
                                    closed

    SL80486SX          Open       Pins 2 & 3       Open          Open
                                    closed

     CX486DX           Open       Pins 2 & 3       Open          Open
                                    closed

     AM486DX           Open       Pins 2 & 3       Open          Open
                                    closed

     80486DX           Open       Pins 2 & 3       Open          Open
                                    closed

    SL80486DX          Open       Pins 2 & 3       Open          Open
                                    closed

     CX486DX2          Open       Pins 2 & 3       Open          Open
                                    closed

   CX486DX2 (M7        Open       Pins 2 & 3       Open          Open
       P/O)                         closed

     TI486DX2          Open       Pins 2 & 3       Open          Open
                                    closed

     AM486DX2          Open       Pins 2 & 3       Open          Open
                                    closed

  (SL) AM486DX2        Open       Pins 2 & 3       Open        Pins 2 & 3
                                    closed                      closed

     80486DX2          Open       Pins 2 & 3       Open          Open
                                    closed

    SL80486DX2         Open       Pins 2 & 3       Open          Open
                                    closed

   CX486DX4 (M7        Open       Pins 2 & 3       Open          Open
       P/O)                         closed

     CX486DX4          Open       Pins 2 & 3    Pins 1 & 2     Pins 1 & 2
    (iDX4P/O)                       closed        closed        closed

  AM486DX4 (V8T)       Open       Pins 2 & 3       Open          Open
                                    closed

     AM486DX4S         Open       Pins 2 & 3       Open          Open
      (SV8T)                        closed

     AM486DX4S         Open       Pins 1 & 2    Pins 1 & 2     Pins 1 & 2
      (SV8B)                        closed        closed        closed

  80486DX4 (WT)        Open       Pins 2 & 3       Open          Open
                                    closed

  80486DX4 (WB)        Open       Pins 1 & 2    Pins 1 & 2     Pins 1 & 2
                                    closed        closed        closed

       P24D            Open       Pins 1 & 2      1 & 2          1 & 2
                                    closed

       P24T         Pins 1 & 2    Pins 1 & 2       Open          Open
                      closed        closed

      CX5X86           Open       Pins 2 & 3    Pins 1 & 2     Pins 1 & 2
                                    closed        closed        closed

                        CPU TYPE SELECTION (CONT)

       Type           JP10       JP13       JP14       JP15       JP16

      AM486SX         Open       Open       Open       2 & 3      Open

      80486SX         Open       Open       Open       2 & 3      Open

     SL80486SX        1 & 2      Open       2 & 3      2 & 3      Open

      CX486DX         1 & 2      2 & 3      1 & 2     1 & 2, 3    3 & 4
                                                        & 4

      AM486DX         Open       Open       Open      1 & 2, 3    3 & 4
                                                        & 4

      80486DX         Open       Open       Open      1 & 2, 3    3 & 4
                                                        & 4

     SL80486DX        1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

     CX486DX2         1 & 2      2 & 3      1 & 2     1 & 2, 3    3 & 4
                                                        & 4

    CX486DX2 (M7      1 & 2      2 & 3      1 & 2     1 & 2, 3    3 & 4
       P/O)                                             & 4

     TI486DX2         1 & 2      2 & 3      1 & 2     1 & 2, 3    3 & 4
                                                        & 4

     AM486DX2         Open       Open       Open      1 & 2, 3    3 & 4
                                                        & 4

   (SL) AM486DX2      Open       Open       Open      1 & 2, 3    3 & 4
                                                        & 4

     80486DX2         Open       Open       Open      1 & 2, 3    3 & 4
                                                        & 4

    SL80486DX2        1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

    CX486DX4 (M7      1 & 2      2 & 3      1 & 2     1 & 2, 3    3 & 4
       P/O)                                             & 4

      CX486DX4        1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
     (iDX4P/O)                                          & 4

  AM486DX4 (V8T)      Open       Open       Open      1 & 2, 3    3 & 4
                                                        & 4

  AM486DX4S (SV8T)    1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

  AM486DX4S (SV8B)    1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

   80486DX4 (WT)      1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

   80486DX4 (WB)      1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

       P24D           1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

       P24T           1 & 2      1 & 2      2 & 3     1 & 2, 3    2 & 3
                                                        & 4

      CX5X86          1 & 2      Open       2 & 3     1 & 2, 3    3 & 4
                                                        & 4

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

       Type           JP17       JP18       JP19       JP20       JP29

      AM486SX         Open       Open       Open       Open       2 & 3

      80486SX         Open       Open       Open       Open       2 & 3

     SL80486SX        3 & 4      Open       1 & 2     4 & 5       2 & 3

      CX486DX         2 & 3      2 & 3      Open      2 & 3       2 & 3

      AM486DX         Open       Open       Open       Open       2 & 3

      80486DX         Open       Open       Open       Open       2 & 3

     SL80486DX        3 & 4      Open       1 & 2     4 & 5       2 & 3

     CX486DX2         2 & 3      2 & 3      Open      2 & 3       2 & 3

    CX486DX2 (M7      2 & 3      2 & 3      Open      2 & 3       1 & 2
       P/O)

     TI486DX2         2 & 3      2 & 3      Open      2 & 3       1 & 2

     AM486DX2         Open       Open       Open       Open       2 & 3

   (SL) AM486DX2      Open       Open       Open       Open       1 & 2

     80486DX2         Open       Open       Open       Open       2 & 3

    SL80486DX2        3 & 4      Open       1 & 2     4 & 5       2 & 3

    CX486DX4 (M7      2 & 3      2 & 3      Open      2 & 3       1 & 2
       P/O)

      CX486DX4       1 & 2, 3    1 & 2      2 & 3     4 & 5       1 & 2
     (iDX4P/O)         & 4

  AM486DX4 (V8T)      Open       Open       Open       Open       1 & 2

  AM486DX4S (SV8T)    3 & 4      Open       1 & 2     4 & 5       1 & 2

  AM486DX4S (SV8B)   1 & 2, 3    1 & 2      2 & 3     4 & 5       1 & 2
                       & 4

   80486DX4 (WT)      3 & 4      Open       1 & 2     4 & 5       1 & 2

   80486DX4 (WB)     1 & 2, 3    1 & 2      2 & 3     4 & 5       1 & 2
                       & 4

       P24D          1 & 2, 3    1 & 2      2 & 3     4 & 5       2 & 3
                       & 4

       P24T           3 & 4      1 & 2      Open      1 & 2       2 & 3

      CX5X86         1 & 2, 3    1 & 2      2 & 3     4 & 5       1 & 2
                       & 4

  Note: Pins designated should be in the closed position.

                    DMA CHANNEL SELECTION

       Channel               JP22                 JP23

          1            Pins 2 & 3 closed   Pins 2 & 3 closed

          3            Pins 1 & 2 closed   Pins 1 & 2 closed

