
ASUS COMPUTER INTERNATIONAL

VL/I-486SV2G, VL/I-486SV2GX4 (REV. 1.1)

Processor  80486SX/SL80486SX/80487SX/CX486S/CX486DX/80486DX/SL80486DX/

           SLODP486/ODP486SX/CX486DX2/80486DX2/80486DX4/Pentium Overdrive
Processor  20/25/33/40/50(internal)/50/66(internal)/75(internal)/82.5(internal)/
Speed      99(internal)/100(internal)MHz
Chip Set   SIS
Max.       64MB
Onboard
DRAM
Cache      128/256/512/1024KB
BIOS       Award
Dimensions 220mm x 220mm
I/O        32-bit VESA local bus slots (2), PS/2 mouse port, green PC
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  External battery          BCON1      Green PC 1                 JP2

  Turbo switch               CN1       Green PC 2                 JP3

  Turbo LED                  CN2       Green PC 3                 JP4

  Reset switch               CN3       Suspend power              JP28
                                       management

  Speaker                    CN4       32-bit VESA local bus       S1
                                       slot

  Power LED & keylock        CN5       32-bit VESA local bus       S2
                                       slot

  PS/2 mouse connector       CN6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Battery type select (Internal)           JP1           pins 1 & 2
                                                              closed

      Battery type select (External)           JP1           pins 2 & 3
                                                              closed

     IRQ12 enabled                            JP7           pins 1 & 2
                                                              closed

      IRQ12 disabled                           JP7           pins 2 & 3
                                                              closed

     Factory configured - do not alter        JP8              N/A

     Monitor type select CGA                  JP9           pins 2 & 3
                                                              closed

      Monitor type select monochrome or        JP9           pins 1 & 2
      VGA                                                     closed

     Hardware SMI switch enabled             JP10           pins 2 & 3
                                                              closed

      RC control enabled                      JP10           pins 1 & 2
                                                              closed

     CPU manufacturer select type            JP11           pins 2 & 3
      Intel                                                   closed

      CPU manufacturer select type            JP11           pins 1 & 2
      Cyrix                                                   closed

     Delay VESA clock                        JP24           pins 1 & 2
                                                              closed

      No Delay VESA clock                     JP24           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2         Bank 3

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

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

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

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

      5MB        (1) 1M x 36    (1) 4M x 36   (1) 4M x 36       NONE

      6MB        (1) 1M x 36    (1) 1M x 36   (1) 4M x 36    (1) 4M x 36

      6MB        (1) 2M x 36       NONE       (1) 4M x 36       NONE

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

     10MB        (1) 1M x 36    (1) 1M x 36   (1) 4M x 36    (1) 4M x 36

     10MB        (1) 1M x 36    (1) 1M x 36   (1) 8M x 36       NONE

     10MB        (1) 2M x 36       NONE       (1) 4M x 36    (1) 4M x 36

     10MB        (1) 2M x 36       NONE       (1) 8M x 36       NONE

     12MB        (1) 4M x 36    (1) 4M x 36   (1) 4M x 36       NONE

     12MB        (1) 8M x 36       NONE       (1) 4M x 36       NONE

     16MB        (1) 4M x 36    (1) 4M x 36   (1) 4M x 36    (1) 4M x 36

     16MB        (1) 4M x 36    (1) 4M x 36   (1) 8M x 36       NONE

     16MB        (1) 8M x 36       NONE       (1) 8M x 36       NONE

     16MB        (1) 8M x 36       NONE       (1) 4M x 36    (1) 4M x 36

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

     17MB        (1) 1M x 36     (1) 16M x       NONE           NONE
                                    36

     18MB        (1) 1M x 36    (1) 1M x 36    (1) 16M x        NONE
                                                  36

     18MB        (1) 2M x 36       NONE        (1) 16M x        NONE
                                                  36

     20MB        (1) 4M x 36     (1) 16M x       NONE           NONE
                                    36

     24MB        (1) 4M x 36    (1) 4M x 36    (1) 16M x        NONE
                                                  36

     24MB        (1) 8M x 36       NONE        (1) 16M x        NONE
                                                  36

     32MB         (1) 16M x      (1) 16M x       NONE           NONE
                     36             36

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

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

                        DRAM CONFIGURATION (CONT.)

     Size          Bank 0         Bank 1        Bank 2         Bank 3

     40MB        (1) 4M x 36    (1) 4M x 36    (1) 16M x    (1) 16M x 36
                                                  36

     40MB        (1) 4M x 36    (1) 4M x 36    (1) 32M x        NONE
                                                  36

     40MB        (1) 8M x 36       NONE        (1) 16M x    (1) 16M x 36
                                                  36

     40MB        (1) 8M x 36       NONE        (1) 32M x        NONE
                                                  36

     40MB         (1) 16M x      (1) 16M x     (1) 16M x        NONE
                     36             36            36

     64MB         (1) 16M x      (1) 16M x     (1) 16M x    (1) 16M x 36
                     36             36            36

     64MB         (1) 16M x      (1) 16M x     (1) 32M x        NONE
                     36             36            36

     64MB         (1) 32M x        NONE        (1) 32M x        NONE
                     36                           36

                            CACHE CONFIGURATION

       Size             Bank 0             Bank 1               TAG

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

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

      512KB         (4) 64K x 8/(4)    (4) 64K x 8/NONE     (1) 32K x 8
                       128K x 8

      1024KB         (4) 128K x 8       (4) 128K x 8       (1) 128K x 8

                        CACHE JUMPER CONFIGURATION

       Size              JP13              JP14               JP25

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

   256KB (32K x          Open            pins 1 & 2         pins 1 & 2
        8)                                closed             closed

   256KB (64K x       pins 1 & 2         pins 2 & 3         pins 1 & 2
        8)              closed            closed             closed

   512KB (64K x       pins 5 & 6         pins 1 & 2         pins 2 & 3
        8)              closed            closed             closed

   512KB (128K x      pins 1 & 2         pins 2 & 3         pins 2 & 3
        8)              closed            closed             closed

      1024KB          pins 2 & 3         pins 1 & 2         pins 2 & 3
                        closed            closed             closed

                          CPU TYPE CONFIGURATION

       Type          JP16        JP17       JP18       JP19        JP20

     80486SX         Open        Open       Open      pins 2 &   pins 2 &
                                                         3          3

     SL486SX         3 & 4       Open     pins 4 &    pins 2 &   pins 2 &
                    and 5 &                  5           3          3
                       6

     80487SX         Open        Open       Open      pins 1 &   pins 2 &
                                                         2          3

      CX486S         2 & 3      pins 1      1 & 2     pins 2 &   pins 2 &
                    and 4 &      & 2       and 3 &       3          3
                       5                     4

     CX486DX         2 & 3      pins 1      1 & 2     pins 1 &   pins 2 &
                    and 4 &      & 2       and 3 &       2          3
                       5                     4

     80486DX         Open        Open       Open      pins 1 &   pins 2 &
                                                         2          3

     SL486DX         3 & 4       Open     pins 4 &    pins 1 &   pins 2 &
                    and 5 &                  5           2          3
                       6

     SLODP486       pins 5 &     Open     pins 4 &    pins 1 &   pins 2 &
                       6                     5           2          3

     ODP486SX        Open        Open       Open      pins 1 &   pins 2 &
                                                         2          3

     CX486DX2        2 & 3      pins 1      1 & 2      1 & 2     pins 2 &
                    and 4 &      & 2       and 3 &    and 4 &       3
                       5                     4           5

     80486DX2        Open        Open       Open      pins 1 &   pins 2 &
                                                         2          3

     SL486DX2        3 & 4       Open     pins 4 &    pins 1 &   pins 2 &
                    and 5 &                  5           2          3
                       6

  80486DX4 (2 x)     3 & 4      pins 5    pins 4 &    pins 1 &   pins 2 &
                    and 5 &      & 6         5           2          3
                       6

   80486DX4 (2.5     3 & 4      pins 4    pins 4 &    pins 1 &   pins 2 &
        x)          and 5 &      & 5         5           2          3
                       6

  80486DX4 (3 x)     3 & 4       Open     pins 4 &    pins 1 &   pins 2 &
                    and 5 &                  5           2          3
                       6

      Pentium       pins 5 &     Open     pins 4 &    pins 1 &   pins 1 &
    Overdrive          6                     5           2          2

  Note:Pins designated should be in the closed position.

             HARDWARE TRAP CPU TYPE CONFIGURATION

        Type                  JP5                 JP6

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

       CX486S          pins 2 & 3 closed   pins 1 & 2 closed

       CX486DX         pins 2 & 3 closed   pins 1 & 2 closed

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

       SL486SX         pins 1 & 2 closed   pins 2 & 3 closed

       SL486DX         pins 1 & 2 closed   pins 2 & 3 closed

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

      SL486DX2         pins 1 & 2 closed   pins 2 & 3 closed

      SL486DX4         pins 1 & 2 closed   pins 2 & 3 closed

  Pentium Overdrive    pins 1 & 2 closed   pins 1 & 2 closed

                          CPU SPEED CONFIGURATION

      Speed              JP21               JP22               JP23

      20MHz            pins 1 & 2        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

      25MHz            pins 2 & 3        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

      33MHz            pins 2 & 3        pins 2 & 3         pins 2 & 3
                        closed             closed             closed

      40MHz            pins 2 & 3        pins 2 & 3         pins 1 & 2
                        closed             closed             closed

     50i MHz           pins 2 & 3        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

      50MHz            pins 1 & 2        pins 1 & 2         pins 2 & 3
                        closed             closed             closed

     66i MHz           pins 2 & 3        pins 2 & 3         pins 2 & 3
                        closed             closed             closed

   75i MHz (3x)        pins 2 & 3        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

     82.5i MHz         pins 2 & 3        pins 2 & 3         pins 2 & 3
      (2.5x)            closed             closed             closed

   99i MHz (3x)        pins 2 & 3        pins 2 & 3         pins 2 & 3
                        closed             closed             closed

  100i MHz (2x)        pins 1 & 2        pins 1 & 2         pins 2 & 3
                        closed             closed             closed

                  VESA WAIT STATE/BUS SPEED CONFIGURATION

    CPU speed         Wait states           JP26               JP27

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

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

                    CPU VOLTAGE SELECTION

      Function               JP12                JP15

     3.3V (DX4)        pins 2 & 3 closed   pins 2 & 3 closed

         5V            pins 1 & 2 closed   pins 1 & 2 closed

