
ADVANCED INTEGRATION RESEARCH, INC.

486MI REV. 2.2

Processor  80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium
           Overdrive
Processor  8/10/12/16/20/25/33/40I/40/50(internal)/60/66(internal)/66MHz
Speed
Chip Set   SIS
Max.       64MB
Onboard
DRAM
Cache      64/128/256/512KB
BIOS       AMI
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slots (3), floppy drive interfaces (2),
Options    green PC connector, IDE interface, parallel port, serial ports
           (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port 1              CN1       Reset switch                J2

  Serial port 2              CN2       Turbo switch                J3

  Parallel port              CN3       Turbo LED                   J4

  IDE interface              CN4       Speaker                     J5

  Floppy drive               CN5       IDE interface LED           J6
  interface 1

  Floppy drive               CN6       Power LED & keylock         J7
  interface 2

  Green PC connector          J1       32-bit VESA local bus   SL1 - SL3
                                       slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             JP8           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             JP9           pins 1 & 2
      alter                                                   closed

     Flash BIOS write protect enabled        JP17          pins 1 & 2
                                                              closed

      Flash BIOS write protect                JP17          pins 2 & 3
      disabled                                                closed

     CMOS memory normal operation            JP20          pins 1 & 2
                                                              closed

      CMOS memory clear                       JP20          pins 2 & 3
                                                              closed

     VESA IDE interface enabled              JP22          pins 1 & 2
                                                              closed

      VESA IDE interface disabled             JP22          pins 2 & 3
                                                              closed

     Factory configured - do not             JP28             Open
      alter

     Factory configured - do not             JP29             Open
      alter

     Parallel port IRQ select IRQ7           JP30          pins 1 & 2
                                                              closed

      Parallel port IRQ select IRQ5           JP30          pins 2 & 3
                                                              closed

     System wake up IRQ select IRQ4          JP31          pins 1 & 2
      (COM1 & COM2)                                           closed

      System wake up IRQ select IRQ3          JP31          pins 2 & 3
      (COM2 & COM4)                                           closed

     Factory configured - do not             JP37             Open
      alter

                            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) 4M x 36       NONE           NONE            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

     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) 8M x 36       NONE           NONE            NONE

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

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

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

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

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

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

                       DRAM CONFIGURATION (CON'T)

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     48MB       (1) 4M x 36   (1) 4M x 36    (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 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

                  CACHE JUMPER CONFIGURATION

  Size     JP10     JP11     JP12     JP13     JP14    JP15

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

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

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

  512KB    2 & 3   2 & 3    2 & 3    1 & 2    1 & 2    2 & 3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

        Type                JP1              JP2               JP38

       80486SX             Open           pins 2 & 3         pins 1 & 2
                                            closed            closed

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

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

     80486DX/DX2         pins 1 & 2     pins 1 & 2, 3 &      pins 1 & 2
                          closed           4 closed           closed

      80486DX4           pins 1 & 2     pins 1 & 2, 3 &        Open
                          closed           4 closed

  Pentium Overdrive      pins 2 & 3     pins 1 & 2, 3 &      pins 1 & 2
                          closed           4 closed           closed

                  CPU CLOCK CONFIGURATION (80486DX4 ONLY)

     Speed         External clock     Internal clock           JP3
                       speed              speed

       3x            25/33MHz           75/100MHz              Open

      2.5x             33MHz              83MHz             pins 2 & 3
                                                              closed

       2x              50MHz              100MHz            pins 1 & 2
                                                              closed

                          CPU SPEED CONFIGURATION

     Speed          JP5            JP6           JP7             ID3

     25MHz         Closed        Closed         Closed        pins 1 & 2
                                                               closed

     33MHz         Closed        Closed          Open         pins 1 & 2
                                                               closed

     40MHz         Closed         Open          Closed        pins 2 & 3
                                                               closed

    50iMHz         Closed        Closed         Closed        pins 1 & 2
                                                               closed

     50MHz         Closed         Open           Open         pins 2 & 3
                                                               closed

    66iMHz         Closed        Closed          Open         pins 1 & 2
                                                               closed

               CPU VOLTAGE CONFIGURATION

          Voltage                       W1

            3.3v             pins 1 & 3, 2 & 4 closed

             5v              pins 3 & 5, 4 & 6 closed

      VESA WAIT STATE CONFIGURATION

     Wait states             ID2

    0 wait states     pins 1 & 2 closed

    1 wait state      pins 2 & 3 closed

                   IDE SPEED CONFIGURATION

        Speed                JP23                 JP24

          0            pins 1 & 2 closed   pins 1 & 2 closed

          2            pins 2 & 3 closed   pins 1 & 2 closed

          4            pins 1 & 2 closed   pins 2 & 3 closed

          6            pins 2 & 3 closed   pins 2 & 3 closed

                          ECP MODE CONFIGURATION

    Setting             Mode              JP25        JP26        JP27

    Enabled       ECP mode disabled       Open        Open       2 & 3
                  for parallel port

   Disabled        ECP mode enabled      1 & 2       1 & 2       1 & 2
                    (DMA 3 used)

   Disabled        ECP mode enabled      2 & 3       2 & 3       1 & 2
                    (DMA 1 used)

            Note: If setting is enabled- 4 floppy drives are used. Pins
            designated should be in the closed position.

