ELITEGROUP COMPUTER SYSTEMS, INC.

UC4913 (VER. 1.3)

Processor      CX486M6/CX486M6-C6/AM486SX/80486SX/AM486DX/80486DX/
               80486DX2/P23T
Processor      25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set       UMC
Video Chip Set None
Maximum        64MB
Onboard Memory
Maximum Video  None
Memory
Cache          64/128/256KB
BIOS           AMI
Dimensions     250mm x 220mm
I/O Options    32-bit VESA local bus slots (3)
NPU Options    None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Speaker                     J1       Reset switch               JP5

  External battery            J2       Power LED & keylock        JP6

  Turbo LED                  JP3       32-bit VESA local bus   SL1 - SL3
                                       slots

  Turbo switch               JP4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Monitor type select color               JP11          Pins 2 & 3
                                                              closed

      Monitor type select monochrome          JP11          Pins 1 & 2
                                                              closed

      CPU type select PQFP CPU                JP12             Open

      CPU type select PGA CPU                 JP12            Closed

      Any VESA card installed                 JP18          Pins 1 & 2
                                                              closed

      Weitek Power 9000 VESA 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       (1) 8K x 8

     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 SPEED SELECTION

      Speed              JP9               JP10               JP23

      25MHz             Closed            Closed        Pins 2 & 3 closed

      33MHz              Open             Closed        Pins 2 & 3 closed

      40MHz             Closed             Open         Pins 2 & 3 closed

      50iMHz            Closed            Closed        Pins 2 & 3 closed

      50MHz              Open              Open         Pins 1 & 2 closed

      66iMHz             Open             Closed        Pins 2 & 3 closed

                   CPU TYPE SELECTION

            Type                        JP7

          CX486M6                Pins 2 & 3 closed

     CX486M6-C6 module       Pins 1 & 2, 3 & 4 closed

          AM486SX                Pins 2 & 3 closed

          80486SX                Pins 2 & 3 closed

          AM486DX            Pins 1 & 2, 3 & 4 closed

          80486DX            Pins 1 & 2, 3 & 4 closed

          80486DX2           Pins 1 & 2, 3 & 4 closed

            P23T             Pins 1 & 2, 3 & 4 closed

                CPU TYPE SELECTION (CX486M6-C6 MODULE ONLY)

       Setting             JP19              JP20              JP21

  Module installed       Pins 2 & 3       Pins 2 & 3        Pins 1 & 2
                          closed            closed            closed

      Module not         Pins 2 & 3       Pins 1 & 2        Pins 1 & 2
      installed           closed            closed            closed

  VL BUS WAIT STATE SELECTION

    Setting           JP1

       0              Open

       1             Closed

  VL BUS SPEED SELECTION

   Setting        JP2

  <= 33MHz        Open

   >33 MHz       Closed