
ROBOTECH, INC.

COBRA RS

Processor        80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         OPTI
Max. Onboard DRAM128MB
Cache            256/512/1024KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (3), green PC connector
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            JP2       Turbo switch              JP19

  Green power supply          JP3       Green PC hardware         JP20
                                        switch

  Keyboard connector         JP16       Turbo LED                 JP21

  Speaker                    JP17       Reset switch              JP26

  Green PC LED               JP18       32-bit VESA local      SL1 - SL3
                                        bus slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            JP1           pins 1 & 2
                                                              closed

      CMOS memory clear                       JP1           pins 2 & 3
                                                              closed

     Monitor type select color               JP4             Closed

      Monitor type select monochrome          JP4              Open

     Flash BIOS voltage select 5v            JP5           pins 1 & 2
                                                              closed

      Flash BIOS voltage select 12v           JP5           pins 2 & 3
                                                              closed

     CPU type select Intel                   JP15          pins 1 & 2
                                                              closed

      CPU type select Cyrix                   JP15          pins 2 & 3
                                                              closed

     Factory configured - do not             JP24             Open
      alter

     Factory configured - do not             JP25             Open
      alter

              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

      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) 8M x 9      (4) 8M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

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

     512KB       (4) 128K x 8        NONE        (1) 32K x 8

      1MB        (4) 128K x 8    (4) 128K x 8    (1) 32K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 JP11                 JP12

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

        512KB          pins 2 & 3 closed   pins 2 & 3 closed

         1MB           pins 2 & 4 closed   pins 2 & 3 closed

                          CPU TYPE CONFIGURATION

         Type                 JP8               JP9             JP10

       80486SX             pins 2 & 3          Open             Open
                            closed

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

     80486DX/DX2        pins 1 & 2, 3 &      pins 2 & 3         Open
                           4 closed           closed

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

                          CPU SPEED CONFIGURATION

    Speed        JP13           JP14             JP27           JP28

    25MHz       Closed        pins 1 & 2      pins 2 & 4      pins 2 & 3
                               closed           closed         closed

    33MHz        Open      pins 1 & 2, 5 &    pins 2 & 4      pins 2 & 3
                              6 closed          closed         closed

    40MHz        Open      pins 1 & 2, 3 &    pins 1 & 2      pins 1 & 2
                              4 closed          closed         closed

   50iMHz       Closed        pins 1 & 2      pins 2 & 4      pins 2 & 3
                               closed           closed         closed

    50MHz        Open      pins 1 & 2, 3 &    pins 1 & 2      pins 1 & 2
                           4, 5 & 6 closed      closed         closed

   66iMHz        Open      pins 1 & 2, 5 &    pins 2 & 4      pins 2 & 3
                              6 closed          closed         closed

  BUS SPEED CONFIGURATION

  CPU speed        JP22

   <=33MHz         Open

    >33MHz        Closed

  VESA WAIT STATE CONFIGURATION

   Wait states         JP23

  0 wait states        Open

  1 wait state        Closed

