
INTERLOGIC INDUSTRIES

ASC486 VER. C

Processor    80486SX/CX486S/80487SX/CX486S2/80486DX/80486DX2/Pentium
             Overdrive
Processor    25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set     ALI
Max. Onboard 128MB
DRAM
Cache        32/64/128/256/512/1024KB
BIOS         AMI
Dimensions   312mm x 122mm
I/O Options  Floppy drive interface, IDE interface, parallel port, serial
             ports (2)
NPU Options  None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Keyboard connector          CN1      Serial port 1               CN9

  Power LED & keylock         CN2      Serial port 2              CN10

  Floppy drive interface      CN3      Speaker                     JP1

  IDE interface LED           CN4      Reset switch                JP2

  Parallel port               CN5      IDE interface               JP3

  PC/104 Module connector     CN6      Turbo switch                JP4

  Keyboard port               CN7      Turbo LED                   JP5

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     Battery type select external             JP11          pins 2 & 3
                                                              closed

      Battery type select internal             JP11          pins 1 & 2
                                                              closed

     Clock system select double           JP15 & JP46       pins 1 & 2
      frequency                                               closed

      Clock system select single           JP15 & JP46       pins 2 & 3
      frequency                                               closed

     CMOS memory normal operation             JP28            Open

      CMOS memory clear                        JP28           Closed

     Parallel port interrupt select           JP31          pins 1 & 2
      IRQ7                                                    closed

      Parallel port interrupt select           JP31          pins 2 & 3
      IRQ5                                                    closed

     IDE interface enabled                    JP32          pins 1 & 2
                                                              closed

      IDE interface disabled                   JP32          pins 2 & 3
                                                              closed

     Parallel port address select             JP33          pins 1 & 2
      378h-37Fh                                               closed

      Parallel port address select             JP33          pins 2 & 3
      278h-27Fh                                               closed

     Floppy drive interface enabled           JP34          pins 1 & 2
                                                              closed

      Floppy drive interface disabled          JP34          pins 2 & 3
                                                              closed

     Monitor type select color                JP38           Closed

      Monitor type select monochrome           JP38            Open

     Parallel port unidirectional             JP39           Closed

      Parallel port bidirectional              JP39            Open

     XT IDE interface disabled                JP40          pins 2 & 3
                                                              closed

      XT IDE interface enabled                 JP40          pins 1 & 2
                                                              closed

     Parallel port enabled                    JP43          pins 1 & 2
                                                              closed

      Parallel port disabled                   JP43          pins 2 & 3
                                                              closed

                         SERIAL PORT CONFIGURATION

  Port 1 (CN9)       Port 2       JP41       JP42       JP44       JP45
                    (CN10)

   3F8h-3FFh       2F8h-2FFh      1 & 2     1 & 2      1 & 2      1 & 2

   3F8h-3FFh       Disabled       1 & 2     1 & 2       N/A       2 & 3

    Disabled       2F8h-2FFh      2 & 3      N/A       1 & 2      1 & 2

   3E8h-3EFh       2E8h-2EFh      1 & 2     2 & 3      2 & 3      1 & 2

   3E8h-3EFh       Disabled       1 & 2     2 & 3       N/A       2 & 3

    Disabled       2E8h-2EFh      2 & 3      N/A       2 & 3      1 & 2

    Disabled       Disabled       2 & 3      N/A        N/A       2 & 3

  Note: Pins designated should be in the closed position.

                       SERIAL PORT INTERRUPT SELECT

   Port 1 (CN9)     Port 2 (CN10)          JP29               JP30

       IRQ4              IRQ3            pins 1 & 2         pins 2 & 3
                                          closed             closed

       IRQ3              IRQ4            pins 2 & 3         pins 1 & 2
                                          closed             closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      3MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

     128MB        (4) 16M x 9    (4) 16M x 9

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

      32KB        (4) 8K x 8         NONE        (1) 16K x 4

      64KB        (4) 8K x 8      (4) 8K x 8     (1) 16K x 4

     128KB        (4) 32K x 8        NONE        (1) 32K x 8

     256KB        (4) 32K x 8     (4) 32K x 8    (1) 32K x 8

     512KB       (4) 128K x 8        NONE        (1) 64K x 4

      1MB        (4) 128K x 8    (4) 128K x 8    (1) 64K x 4

                        CACHE JUMPER CONFIGURATION

                Size                                 JP22

                32KB                                 Open

                64KB                          pins 9 & 10 closed

               128KB                      pins 7 & 8, 9 & 10 closed

               256KB                   pins 5 & 6, 7 & 8, 9 & 10 closed

               512KB                   pins 3 & 4, 5 & 6, 7 & 8, 9 & 10
                                                    closed

                1MB                   pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9
                                                 & 10 closed

                    CACHE JUMPER CONFIGURATION (CONT)

    Size          JP24            JP25           JP26           JP27

    32KB          Open            Open        pins 2 & 3      pins 1 & 2
                                                closed         closed

    64KB          Open            Open        pins 1 & 2      pins 1 & 2
                                                closed         closed

    128KB         Open         pins 2 & 3     pins 1 & 2      pins 2 & 3
                                 closed         closed         closed

    256KB         Open         pins 1 & 2     pins 1 & 2      pins 2 & 3
                                 closed         closed         closed

    512KB       pins 1 & 2     pins 1 & 2     pins 1 & 2      pins 2 & 3
                 closed          closed         closed         closed

     1MB        pins 1 & 2     pins 1 & 2     pins 1 & 2      pins 2 & 3
                 closed          closed         closed         closed

                          CPU TYPE CONFIGURATION

     Type         JP6       JP7       JP8       JP12      JP13      JP14

    80486SX      1 & 2     1 & 2     1 & 2     1 & 2      1 & 2     1 & 2

    80487SX      1 & 2     1 & 2     2 & 3     1 & 2      1 & 2     1 & 2

    CX486S       1 & 2     1 & 2     1 & 2     1 & 2      2 & 3     2 & 3

    CX486S2      2 & 3     1 & 2     1 & 2     1 & 2      1 & 2     2 & 3

  80486DX/DX2    1 & 2     1 & 2     2 & 3     1 & 2      1 & 2     1 & 2

   Overdrive     2 & 3     2 & 3     2 & 3     2 & 3      1 & 2     1 & 2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type        JP16     JP17      JP18       JP19      JP20      JP21

    80486SX      Open     Open     Closed      Open      Open      Open

    80487SX      1 & 2    Open     Closed      Open      Open     Closed

    CX486S       3 & 4    Open      Open      Closed    Closed     Open

    CX486S2      3 & 4   Closed     Open      Closed    Closed     Open

  80486DX/DX2    2 & 3    Open     Closed      Open      Open     Closed

   Overdrive     1 & 2   Closed    Closed      Open      Open     Closed

  Note: Pins designated should be in the closed position.

                 CPU SPEED CONFIGURATION (EXTERNAL)

    Speed       JP23/1 & 2   JP23/3 & 4    JP23/5 & 6    JP23/7 & 8

    25MHz          Open         Open          Open         Closed

    33MHz         Closed        Open          Open          Open

    40iMHz        Closed       Closed        Closed         Open

    40MHz         Closed       Closed         Open          Open

    50iMHz         Open        Closed         Open          Open

    50MHz          Open         Open         Closed        Closed

    66iMHz        Closed        Open         Closed         Open

  Overdrive        Open        Closed        Closed         Open

              CPU SPEED CONFIGURATION (INTERNAL)

        Speed                JP9                  JP10

       40iMHz          pins 1 & 2 closed   pins 2 & 3 closed

       50iMHz          pins 2 & 3 closed   pins 2 & 3 closed

       66iMHz          pins 2 & 3 closed   pins 1 & 2 closed

                          WATCH DOG TIMER SETTING

               Setting                                JP35

       Reset when WDT time out                 pins 1 & 2 closed

   Activate NMI to CPU when WDT time           pins 2 & 3 closed
                 out

             WDT disabled                             Open

                  WATCH DOG TIME OUT PERIOD

   Time out period           JP36                 JP37

        500ms          pins 1 & 2 closed         Closed

      1 second         pins 1 & 2 closed          Open

     2.5 seconds       pins 2 & 3 closed         Closed

      5 seconds        pins 2 & 3 closed          Open

