Rampage 286                                         AST Part Number 202154-001

The Rampage 286 is a memory expansion adapter for the IBM PC/AT and 100%
compatibles running at 6 or 8 MHz.  Memory can be expanded on this board from
512K to 2048K using industry standard 256K dynamic RAM chips with a minimum
speed requirement of 120NS.  Memory standards supported by the Rampage 286
include conventional (base 640K), linear extended, LIM 3.2, LIM 4.0, and EEMS.


SWITCH SETTINGS

    SWITCH BLOCK 1 - (TEN POSITIONS; ON = TOWARD NUMBERS)

        RAMPAGE MEMORY DEDICATED TO LINEAR / NON-EXPANDED MEMORY

        LINEAR
        MEMORY  SW1-1  SW1-2  SW1-3  SW1-4
        ------  -----  -----  -----  -----
        *128K     ON     ON     ON     ON (Default Setting)
         256K     ON     ON     ON    OFF
         384K     ON     ON    OFF     ON
         512K     ON     ON    OFF    OFF
         640K     ON    OFF     ON     ON
         768K     ON    OFF     ON    OFF
         896K     ON    OFF    OFF     ON
        1024K     ON    OFF    OFF    OFF
        1152K    OFF     ON     ON     ON
        1280K    OFF     ON     ON    OFF
        1408K    OFF     ON    OFF     ON
        1536K    OFF     ON    OFF    OFF
        1664K    OFF    OFF     ON     ON
        1792K    OFF    OFF     ON    OFF
        1920K    OFF    OFF    OFF     ON
        2048K    OFF    OFF    OFF    OFF

        NOTE: The above settings define how much of the memory on the Rampage
              will be used as conventional (base 640K) and/or extended linear
              memory.  Any memory not used by these settings will be available
              as EMS expanded memory.

              If the Rampage is to be used exclusively as EMS expanded memory,
              set the switches on Bank 2 (below) accordingly, and the above
              settings will be ignored.


        BASE I/O ADDRESS

            ADDRESS  SW1-5  SW1-6  SW1-7  SW1-8
            -------  -----  -----  -----  -----
             0208h     ON     ON     ON     ON
            *0218h     ON     ON     ON    OFF  (Default Setting)
             0258h     ON    OFF     ON    OFF
             0268h     ON    OFF    OFF     ON
             02A8h    OFF     ON    OFF     ON
             02B8h    OFF     ON    OFF    OFF
             02E8h    OFF    OFF    OFF     ON

        DUAL PAGE MODE

            SW1-9     ON=ENABLED     OFF=DISABLED

        NOTE: Dual page mode allows expanded memory to maintain two sets of
              mapping registers, which ensures proper multitasking operation.
              Generally, dual page mode is enabled. (SW1-9 ON)

            SW1-10   N/A


    SWITCH BLOCK 2 - (EIGHT POSITIONS - ON = TOWARD NUMERS)

        STARTING ADDRESS (LINEAR MEMORY INSTALLED PREVIOUS TO RAMPAGE)

        START
        ADDRESS        SW1  SW2  SW3  SW4  SW5  SW6  SW7
        -------------  ---  ---  ---  ---  ---  ---  ---
            0K          ON   ON   ON   ON   ON   ON   ON
          128K          ON   ON   ON   ON   ON   ON  OFF
          256K          ON   ON   ON   ON   ON  OFF   ON
          384K          ON   ON   ON   ON   ON  OFF  OFF
         *512K          ON   ON   ON   ON  OFF   ON   ON (Default Setting)
          640K          ON   ON   ON   ON  OFF   ON  OFF
          768K          ON   ON   ON   ON  OFF  OFF   ON
          896K          ON   ON   ON   ON  OFF  OFF  OFF
         1024K          ON   ON   ON  OFF   ON   ON   ON
         1152K          ON   ON   ON  OFF   ON   ON  OFF
         1280K          ON   ON   ON  OFF   ON  OFF   ON
         1408K          ON   ON   ON  OFF   ON  OFF  OFF
         1536K          ON   ON   ON  OFF  OFF   ON   ON
         1664K          ON   ON   ON  OFF  OFF   ON  OFF
         1792K          ON   ON   ON  OFF  OFF  OFF   ON
         1920K          ON   ON   ON  OFF  OFF  OFF  OFF
         2048K          ON   ON  OFF   ON   ON   ON   ON
         2176K          ON   ON  OFF   ON   ON   ON  OFF
         2304K          ON   ON  OFF   ON   ON  OFF   ON
         2432K          ON   ON  OFF   ON   ON  OFF  OFF
         2560K          ON   ON  OFF   ON  OFF   ON   ON
         2688K          ON   ON  OFF   ON  OFF   ON  OFF
         2816K          ON   ON  OFF   ON  OFF  OFF   ON
         2944K          ON   ON  OFF   ON  OFF  OFF  OFF
         3072K          ON   ON  OFF  OFF   ON   ON   ON
         4096K  (4MB)   ON  OFF   ON   ON   ON   ON   ON
         5120K  (5MB)   ON  OFF   ON  OFF   ON   ON   ON
         6144K  (6MB)   ON  OFF  OFF   ON   ON   ON   ON
         7168K  (7MB)   ON  OFF  OFF  OFF   ON   ON   ON
         8192K  (8MB)  OFF   ON   ON   ON   ON   ON   ON
         9216K  (9MB)  OFF   ON   ON  OFF   ON   ON   ON
        10240K (10MB)  OFF   ON  OFF   ON   ON   ON   ON
        11264K (11MB)  OFF   ON  OFF  OFF   ON   ON   ON
        12288K (12MB)  OFF  OFF   ON   ON   ON   ON   ON
        13312K (13MB)  OFF  OFF   ON  OFF   ON   ON   ON
        14336K (14MB)  OFF  OFF  OFF   ON   ON   ON   ON
        15360K (15MB)  OFF  OFF  OFF  OFF   ON   ON   ON

        ALL RAMPAGE    OFF  OFF  OFF  OFF  OFF  OFF  OFF
        MEMORY PAGED (EMS)

        SW2-8 - Memory Parity Checking (Recommended always ON)

        The above list of addresses is not complete.  After the 3072K address,
        we have listed the settings for every megabyte only.  Switches 5,6 & 7
        determine the addresses between.  If you are unable to extrapolate the
        correct starting address from the above information, contact AST to
        order the complete documentation.

        NOTE: Linear memory installed previous to the Rampge would consist of
              Base memory (maximum 640K) plus extended memory (non-EMS)
              installed in the system before the Rampage is installed.  If the
              starting address is set below 640K, the Rampage will
              automatically "backfill" base memory up to 640K, with the
              remainder of linear memory going to extended memory.



              You will have to adjust your machines CMOS with your set-up
              program only if you add conventional or extended linear memory
              with the Rampage 286.  Do not change the set-up to reflect
              expanded EMS memory.


SWITCH BLOCK LOCATIONS

    ͻ
                                          +-------+ +-----+         
                                          |  SW1  | | SW2 |        Ķ
                                          +-------+ +-----+         
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                   Ķ
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