
ASUS COMPUTER INTERNATIONAL

VL/ISA-486SV2 VERSION 1.7

Processor        80486SX/80487SX/80486DX/ODP486SX/ 80486DX2
Processor Speed  20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set         SIS
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       246mm x 221mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery          BCON1      Speaker                    CON4

  Turbo switch               CON1      Power LED & keylock        CON5

  Turbo LED                  CON2      32-bit VESA local bus       S1
                                       slot

  Reset switch               CON3      32-bit VESA local bus       S2
                                       slot

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

     CMOS memory normal operation          BJP1             pins 1 & 2
      (Internal Battery)                                      closed

      CMOS memory normal operation          BJP1             pins 2 & 3
      (External Battery)                                      closed

      CMOS memory clear                     BJP1               Open

     Factory configured - do not            JP1             pins 2 & 3
      alter                                                   closed

     Monitor type select EGA,               JP2             pins 1 & 2
      Mono, VGA, or any other                                 closed

      Monitor type select CGA                JP2             pins 2 & 3
                                                              closed

     Factory configured - do not            TP2              Closed
      alter

     Factory configured - do not            TP5               Open
      alter

     Factory configured - do not           TP13             pins 1 & 2
      alter                                                   closed

     Factory configured - do not           TP14             pins 1 & 2
      alter                                                   closed

     Factory configured - do not           TP15             pins 1 & 2
      alter                                                   closed

     Factory configured - do not           TP16             pins 1 & 2
      alter                                                   closed

     Factory configured - do not           TP17             pins 2 & 3
      alter                                                   closed

     Factory configured - do not           TP25             pins 1 & 2
      alter                                                   closed

     Factory configured - do not           TP26               Open
      alter

     Factory configured - do not           TP27             pins 1 & 2
      alter                                                   closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (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

                    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) 8K x 8

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

                        CACHE JUMPER CONFIGURATION

      Size               CJ1                CJ2                CJ3

      64KB            pins 2 & 3         pins 2 & 3            Open
                       closed              closed

      128KB           pins 1 & 2            Open              Closed
                       closed

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

                          CPU TYPE CONFIGURATION

     Type        Package         CPJ1           CPJ2             CPJ3

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

   80486SX         PQFP       pins 1 & 2    pins 1 & 2 and    pins 1 & 2
                                closed      3 & 4 closed        closed

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

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

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

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

          CPU TYPE CONFIGURATION

        Type                 JP22

         AMD          pins 2 & 3 closed

        Intel         pins 2 & 3 closed

        Cyrix         pins 1 & 2 closed

                          CPU SPEED CONFIGURATION

    Speed          OSC1           CS1            CS2             CS3

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

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

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

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

    50iMHz        25MHz        pins 1 & 2     pins 1 & 2      pins 2 & 3
                                closed          closed         closed

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

    66iMHz        33MHz        pins 2 & 3     pins 2 & 3      pins 2 & 3
                                closed          closed         closed

