UNIDENTIFIED

VEGA VS486F-3VL

Processor         80486SX/80486DX/80486DX2/ODP586SX
Processor Speed   25/33/50(internal)/50/66(internal) MHz
Chip Set          Symphony
Max. Onboard DRAM 32MB
SRAM Cache        64/256/1024KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit VESA local bus slots (3)
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose                Location

  External battery           J1         Turbo LED                JP23

  Power LED & keylock       JP20        Turbo switch             JP24

  Speaker                   JP21        32-bit VESA Local     S1, S2 & S3
                                        bus slots

  Reset switch              JP22

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation             J2            pins 1 & 2
                                                              closed

      CMOS memory clear                        J2            pins 3 & 4
                                                              closed

      BIOS type select regular (27C512)        JP2           pins 1 & 2
                                                              closed

      BIOS type select flash (28F001BX)        JP2           pins 2 & 3
                                                              closed

  »   Batterly select internal                 JP3            Closed

      Battery select external                  JP3             Open

  »   Factory configured - do not alter       JP12            Closed

  »   Factory configured - do not alter       JP15             Open

              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

      5MB         (4) 256K x 9    (4) 1M x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      17MB        (4) 256K x 9    (4) 4M 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

                         SRAM JUMPER CONFIGURATION

    Size         JP8          JP9        JP19        JP25         JP26

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

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

     1MB       pins 2 &     pins 2 &    pins 2 &    pins 2 &   pins 2 & 3
                  3            3           3           3

  Note:Pins designated should be in the closed postion.

                      SRAM CONFIGURATION

      Size       Max Cachable        Cache           TAG

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

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

      1MB            64MB        (8) 128K x 8    (1) 128K x 8

                          CPU TYPE CONFIGURATION

        CPU               JP7               JP10               JP17

      80486SX             Open           pins 2 & 3            Open
                                           closed

    All others           Closed          pins 1 & 2           Closed
                                           closed

                             CPU SPEED CONFIGURATION

  Speed    JA1  JP4    JP5      JP6     JP11   JP13     JP14     JP16     JP18

  25/50i   2 &  2 &    Open    Closed    2 &   Open     Closed   Open     Open
   MHz     3     3                       3

  33/66i   2 &  2 &   Closed    Open     2 &   Open     Closed   Open     Open
   MHz     3     3                       3

  50MHz    1 &  1 &    Open    Closed    1 &   Closed   Open     Closed   Closed
           2     2                       2

  Note:Pins designated should be in the closed postion.