UNIDENTIFIED

VL486

Processor        80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       254mm x 220mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery            J1       Speaker                     J7

  Turbo LED                   J4       Power LED & keylock         J8

  Turbo switch                J5       32-bit VESA local bus   SL1 & SL2
                                       slots

  Reset switch                J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select monochrome          JP1           pins 1 & 2
                                                              closed

      Monitor type select color               JP1           pins 2 & 3
                                                              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

      5MB         (4) 256K 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          JP8            JP9            JP10            JP11

    64KB         Open           Open         pins 1 & 2      pins 1 & 2
                                               closed          closed

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

   256KB        Closed         Closed        pins 2 & 3      pins 1 & 2
                                               closed          closed

                          CPU TYPE CONFIGURATION

          Type                     JP14                     JP15

         80486SX            pins 2 & 3 closed               Open

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

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

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

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

             CPU SPEED CONFIGURATION

  Speed      JP4       JP5      JP6       JP7

  25MHz    Closed    Closed     Open      Open

  33MHz    Closed     Open      Open      Open

  40MHz     Open     Closed     Open      Open

  50iMHz   Closed    Closed     Open      Open

  50MHz     Open      Open      Open      Open

  66iMHz   Closed     Open      Open      Open

          VESA WAIT STATE CONFIGURATION

   Wait states         JP12             JP13

  0 wait states        Open             Open

  1 wait state        Closed           Closed