ELITEGROUP COMPUTER SYSTEMS, INC.

UM 486V

Processor        80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            J1        Reset switch              J12

  Power LED & keylock         J4        Speaker                   J13

  Turbo LED                   J10       32-bit VESA Local bus      S1
                                        slot

  Turbo switch                J11       32-bit VESA Local bus      S2
                                        slot

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color               JP13          pins 2 & 3
                                                              closed

      Monitor type select monochrome          JP13          pins 1 & 2
                                                              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

      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          JP22           JP23           JP27            JP28

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

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

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

                          CPU TYPE CONFIGURATION

       Type               JP24              JP25               JP26

      80486SX            Closed          pins 2 & 3            Open
                                           closed

  80486SX (PQFP)          Open              N/A                 N/A

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

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

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

      Pentium            Closed       pins 1 & 2 and 3       pins 2 & 3
     Overdrive                           & 4 closed           closed

               CPU SPEED CONFIGURATION

   Speed      JP18       JP19      JP20       JP21

   25MHz     Closed     Closed     Open       Open

   33MHz      Open      Closed     Open       Open

  50i MHz    Closed     Closed     Open       Open

   50MHz      Open       Open      Open       Open

  66i MHz     Open      Closed     Open       Open

      VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION

    CPU speed      Wait states       JP15 (ID3)      JP16 (ID2)

     £ 33MHz      0 wait states         Open            Open

     > 33MHz       1 wait state        Closed          Closed