
ADVANCED INTEGRATION RESEARCH, INC.

486MI REV. 1.11

Processor       80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set        SIS
Max. Onboard    64MB
DRAM
Cache           64/128/256/512KB
BIOS            AMI
Dimensions      330mm x 218mm
I/O Options     32-bit VESA local bus slots (3), floppy drive interface,
                game port, IDE interface, parallel port, serial ports (2)
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  IDE port                 CN1        Green PC LED                J3

  Floppy port              CN2        Reset switch                J4

  Parallel port            CN3        Turbo switch                J5

  Game port                CN4        Turbo LED                   J6

  Serial port 1            CN5        IDE interface LED           J7

  Serial port 2            CN6        32-bit VESA Local       S1, S2 & S3
                                      bus slots

  Speaker                   J1        Green PC connector          W1

  Power LED & keylock       J2

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper          Position

     Factory configured - do not alter         JP3             N/A

     Factory configured - do not alter         JP4             N/A

     Factory configured - do not alter         JP9             N/A

     Monitor type select monochrome,          JP16             Open
      VGA or EGA

      Monitor type select CGA                  JP16            Closed

     Flash BIOS write protect enabled         JP17          pins 1 & 2
                                                               closed

      Flash BIOS write protect disabled        JP17          pins 2 & 3
                                                               closed

     CMOS memory normal operation             JP20          pins 1 & 2
                                                               closed

      CMOS memory clear                        JP20          pins 2 & 3
                                                               closed

     IDE interface enabled                    JP29          pins 1 & 2
                                                               closed

      IDE interface disabled                   JP29          pins 2 & 3
                                                               closed

     Parallel port select interrupt           JP30          pins 1 & 2
      IRQ7                                                     closed

      Parallel port select interrupt           JP30          pins 2 & 3
      IRQ5                                                     closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2          Bank 3

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                        CACHE JUMPER CONFIGURATION

  Size       JP10      JP11       JP12       JP13       JP14       JP15

  64KB     pins 1 &   pins 1 &   pins 1 &  pins 2 &   pins 1 &   pins 1 &
              2          2          2         3          2          2

  128KB    pins 2 &   pins 1 &   pins 1 &  pins 1 &   pins 1 &   pins 2 &
              3          2          2         2          2          3

  256KB    pins 2 &   pins 2 &   pins 1 &  pins 2 &   pins 2 &   pins 2 &
              3          3          2         3          3          3

  256KB    pins 2 &   pins 2 &   pins 2 &  pins 1 &   pins 1 &   pins 2 &
              3          3          3         2          2          3

  Note:Pins designated should be in the closed position.

                   CACHE SIZE CONFIGURATION

      Size           Bank 0          Bank 1           TAG

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

     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) 32K x 8

                          CPU TYPE CONFIGURATION

          Type                      JP1                     JP2

         80486SX                   Open              pins 2 & 3 closed

         80486DX             pins 1 & 2 closed      pins 1 & 2 and 3 & 4
                                                           closed

         80487SX             pins 2 & 3 closed      pins 1 & 2 and 3 & 4
                                                           closed

        ODP486SX             pins 2 & 3 closed      pins 1 & 2 and 3 & 4
                                                           closed

        80486DX2             pins 1 & 2 closed      pins 1 & 2 and 3 & 4
                                                           closed

                          CPU SPEED CONFIGURATION

  Speed       JP5        JP6         JP7       JP26      JP27      JP28

  20MHz      Closed      Open        Open      pins 2   pins 2    pins 1
                                                & 3      & 3       & 2

  25MHz       Open      Closed      Closed     pins 2   pins 2    pins 1
                                                & 3      & 3       & 2

  33MHz       Open      Closed       Open      pins 2   pins 2    pins 1
                                                & 3      & 3       & 2

  40MHz       Open       Open       Closed     pins 1   pins 1    pins 2
                                                & 2      & 2       & 3

  50i MHz     Open      Closed      Closed     pins 2   pins 2    pins 1
                                                & 3      & 3       & 2

  50MHz       Open       Open        Open      pins 1   pins 1    pins 2
                                                & 2      & 2       & 3

  66i MHz     Open      Closed       Open      pins 2   pins 2    pins 1
                                                & 3      & 3       & 2

  Note:Pins designated should be in the closed position.

                             IDE RECOVERY TIME

    Speed       Recovery Time      JP22           JP23           JP24

    <33mhz      9T, low speed    pins 2 & 3    pins 1 & 2     pins 2 & 3
                                  closed         closed         closed

    <33mhz        7T, middle     pins 1 & 2    pins 2 & 3     pins 2 & 3
                    speed         closed         closed         closed

    <33mhz         5T, high      pins 2 & 3    pins 2 & 3     pins 2 & 3
                    speed         closed         closed         closed

    >40mhz         13T, low      pins 2 & 3    pins 2 & 3     pins 1 & 2
                    speed         closed         closed         closed

    >40mhz        11T middle     pins 1 & 2    pins 1 & 2     pins 2 & 3
                    speed         closed         closed         closed

    >40mhz      9T high speed    pins 2 & 3    pins 1 & 2     pins 2 & 3
                                  closed         closed         closed

          VESA WAIT STATE/BUS SPEED (ID2 &AMP; ID3) CONFIGURATION

      Speed             Setting             ID2                ID3

     <=33MHz         0 wait states       pins 1 & 2         pins 1 & 2
                                           closed             closed

      >33MHz         1 wait state        pins 2 & 3         pins 2 & 3
                                           closed             closed

