
ADVANCED INTEGRATION RESEARCH, INC.

486SH REV. 3.12

Processor  80486SX/80487SX/80486DX/ODP486SX/AM486DX2/80486DX2/AM486DX4/
           80486DX4/Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)75(internal)/100(internal)MHz
Speed
Chip Set   SIS
Max.       128MB
Onboard
DRAM
Cache      128/256/512KB
BIOS       AMI
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3)
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  Power LED & keylock         J1        Speaker                    J4

  Reset switch                J2        Turbo LED                  J5

  Turbo switch                J3        32-bit VESA local      SL1 - SL3
                                        bus slots

                        USER CONFIGURABLE SETTINGS

                 Function                      Jumper         Position

      Turbo enabled                              J3          pins 2 & 3
                                                               closed

      Turbo disabled                             J3          pins 1 & 2
                                                               closed

     CMOS memory normal operation              JP16         pins 1 & 2
                                                               closed

      CMOS memory clear                         JP16         pins 2 & 3
                                                               closed

     Monitor type select                       JP17            Open
      VGA/EGA/monochrome

      Monitor type select CGA                   JP17           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) 512K x    (1) 1M x 36     (1) 512K x        NONE
                    36                            36

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

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

     12MB        (1) 512K x    (1) 1M x 36     (1) 512K x    (1) 1M x 36
                    36                            36

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

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

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

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

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

     24MB        (1) 512K x    (1) 1M x 36     (1) 512K x    (1) 4M x 36
                    36                            36

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     72MB        (1) 1M x 36   (1) 16M x 36   (1) 1M x 36        NONE

     72MB        (1) 1M x 36   (1) 8M x 36    (1) 1M x 36    (1) 8M x 36

     80MB        (1) 4M x 36       NONE       (1) 16M x 36       NONE

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

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

     96MB        (1) 4M x 36   (1) 8M x 36    (1) 4M x 36    (1) 8M x 36

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

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

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

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

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

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

   256KB (B)      (4) 64K x 8        NONE        (1) 32K x 8

     512KB       (4) 128K x 8        NONE        (1) 32K x 8

  Note: The orientation of Banks 0 & 1 are unidentified.

                        CACHE JUMPER CONFIGURATION

     Size         JP1         JP2         JP3         JP4         JP33

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

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

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

    512KB        1 & 2       2 & 3      1 & 2, 3     2 & 3       2 & 3
                                          & 4

  Note: The location of JP33 is unidentified. Pins designated should be
  in the closed position.

                          CPU TYPE CONFIGURATION

     Type          JP8        JP9         JP11        JP30         JP36

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

    80487SX       1 & 2      Closed       2 & 3       Open       1 & 3, 2
                                                                   & 4

   ODP486SX       1 & 2      Closed       2 & 3       Open       1 & 3, 2
                                                                   & 4

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

   AM486DX2       1 & 2      Closed       3 & 4       Open       3 & 5, 4
                                                                   & 6

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

   AM486DX4       1 & 2      Closed       3 & 4      Closed      3 & 5, 4
                                                                   & 6

   80486DX4       1 & 2      Closed       3 & 4       Open       3 & 5, 4
                                                                   & 6

     P24T         1 & 2      Closed       2 & 3       Open       1 & 3, 2
                                                                   & 4

  Note: The location of JP30 is unidentified. Pins designated should be
  in the closed position.

                          CPU SPEED CONFIGURATION

     Speed           JP5           JP6            JP7           JP29

     25MHz         Closed         Closed         Open         pins 1 & 2
                                                               closed

     33MHz          Open          Closed        Closed        pins 1 & 2
                                                               closed

     40MHz         Closed          Open          Open         pins 2 & 3
                                                               closed

    50iMHz         Closed         Closed         Open         pins 1 & 2
                                                               closed

     50MHz          Open           Open         Closed        pins 2 & 3
                                                               closed

    66iMHz          Open          Closed        Closed        pins 1 & 2
                                                               closed

    75iMHz         Closed         Closed         Open         pins 1 & 2
                                                               closed

    100iMHz         Open          Closed        Closed        pins 2 & 3
                                                               closed

