ELITEGROUP COMPUTER SYSTEMS, INC.

UC 4913

Processor        80486SX/80486DX/ODP486SX/80486DX2/CX486SX
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM64MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       230mm x 218mm
I/O Options      32-bit VESA local bus slots (3)
NPU Options      CX487SX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Speaker                     J1       Power LED & keylock        JP6

  External battery            J2       32-bit VESA Local bus       S1
                                       slot

  Turbo LED                  JP3       32-bit VESA Local bus       S2
                                       slot

  Turbo switch               JP4       32-bit VESA Local bus       S3
                                       slot

  Reset switch               JP5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color               JP11          pins 2 & 3
                                                              closed

      Monitor type select monochrome          JP11          pins 1 & 2
                                                              closed

  »   Weitek Power 9000 VESA VGA card         JP18          pins 1 & 2
      not installed                                           closed

      Weitek Power 9000 VESA VGA card         JP18          pins 2 & 3
      installed                                               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

      64MB        (4) 16M x 9        NONE

                    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          NONE

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

                        CACHE JUMPER CONFIGURATION

    Size          JP13           JP15            JP16            JP17

    64KB          Open           Open         pins 1 & 2         Open
                                                closed

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

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

                          CPU TYPE CONFIGURATION

         PGA            Socket        JP7           JP8           JP12

       80386DX           PGA       pins 2 & 3       Open         Closed
                                    closed

       80486SX           PQFP      pins 2 & 3       Open          Open
                                    closed

       80486SX           PGA          N/A           N/A          Closed

       80486DX           PQFP      pins 1 & 2    pins 2 & 3       Open
                                   and 3 & 4       closed

       80486DX           PGA          N/A           N/A          Closed

       80486DX2          PQFP      pins 1 & 2    pins 2 & 3       Open
                                   and 3 & 4       closed

       80486DX2          PGA          N/A           N/A          Closed

       ODP486SX          PQFP      pins 1 & 2    pins 1 & 2       Open
                                   and 3 & 4       closed

       ODP486SX          PGA          N/A           N/A          Closed

   CX486SX/CX487SX       PGA       pins 1 & 2    pins 2 & 3      Closed
                                   and 3 & 4       closed

    CPU SPEED CONFIGURATION

   Speed      JP9       JP10

   25MHz     Closed    Closed

   33MHz      Open     Closed

   40MHz     Closed     Open

  50i MHz    Closed    Closed

  66i MHz     Open     Closed

                             NPU CONFIGURATION

       CX487SX             JP19              JP20              JP21

      Installed          pins 2 & 3       pins 1 & 2        pins 1 & 2
                          closed            closed            closed

    Not installed        pins 1 & 2       pins 2 & 3        pins 2 & 3
                          closed            closed            closed

              VESA WAIT STATE/BUS SPEED CONFIGURATION

    CPU speed      Wait states          JP1              JP2

     £ 33MHz      0 wait states         Open            Open

     > 33MHz       1 wait state        Closed          Closed