RamCard/386C                                        AST Part Number 202269-001

The RamCard/386C is the adapter that contains the memory for the Premium/386C
Computer.  It comes standard with all versions of this system, and is
neccessary for the computer to operate, as the AST Premium/386C has no RAM on
the motherboard.  This memory adapter must be installed in Slot One (far
left), which is specifically designed for 32-bit data transfer.

There are four memory banks on the RamCard, and each bank consists of four
SIMM (Single In-line Memory Module) Modules.  A bank may NOT be partially
filled (1, 2, or 3 SIMMs).  All banks will accept either 256K or 1024K SIMMs,
and if both types of modules are used, the 256K SIMMs must be in the lower-
numbered banks.  The AST Part Number for a 1MB Bank (4 256K SIMMs) for this
product is 500510-007.  The Part Number for a 4MB Bank (4 1024K SIMMs) is
500510-008.  For more info on acceptable RAM, see AST Tech Bulletin #0516.


CONFIGURATION

    Below is a matrix showing all valid memory configurations and the switch
    settings required for each possible combination.  Please note that SW7 is
    not included in memory configuration, but is listed seperately below.  A
    bank listed as 1024K contains four 256K SIMMs; a bank listed as 4096K
    contains four 1024K SIMMs.

    BANK O  BANK 1  BANK 2  BANK 3   TOTAL    SW1  SW2  SW3  SW4  SW5  SW6 *SW8
    ------  ------  ------  ------  ------    ---  ---  ---  ---  ---  ---  ---
    1024K     -       -       -       1 MB    OFF  OFF  OFF  OFF  OFF  OFF  OFF
    1024K   1024K     -       -       2 MB    OFF  ON   OFF  OFF  OFF  OFF  OFF
    1024K   1024K   1024K     -       3 MB    OFF  ON   OFF  ON   OFF  OFF  OFF
    1024K   1024K   1024K   1024K     4 MB    OFF  ON   OFF  ON   OFF  ON   OFF
    4096K     -       -       -       4 MB    OFF  OFF  OFF  OFF  OFF  OFF  ON
    1024K   4096K     -       -       5 MB    ON   OFF  OFF  OFF  OFF  OFF  OFF
    1024K   1024K   4096K     -       6 MB    OFF  ON   ON   OFF  OFF  OFF  OFF
    1024K   1024K   1024K   4096K     7 MB    OFF  ON   OFF  ON   ON   OFF  OFF
    4096K   4096K     -       -       8 MB    ON   OFF  OFF  OFF  OFF  OFF  ON
    1024K   4096K   4096K     -       9 MB    ON   OFF  ON   OFF  OFF  OFF  OFF
    1024K   1024K   4096K   4096K    10 MB    OFF  ON   ON   OFF  ON   OFF  OFF
    4096K   4096K   4096K     -      12 MB    ON   OFF  ON   OFF  OFF  OFF  0N
    1024K   4096K   4096K   4096K    13 MB    ON   OFF  ON   OFF  ON   OFF  OFF
    4096K   4096K   4096K   4096K    16 MB    ON   OFF  ON   OFF  ON   OFF  ON

    NOTE: SW7 - Enables Parity and should remain ON at all times


LOCATIONS

    ͻ
     +------+                   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+   
     +------+                   |   | | |   | | |   | | |   | | |  Ķ
      SW 1-8                    | B | | | B | | | B | | | B | | |   
                                |  A  | |  A  | |  A  | |  A  | |   
                                | | N | | | N | | | N | | | N | |   
                                | |  K  | |  K  | |  K  | |  K  |   
                                | | | 3 | | | 2 | | | 1 | | | 0 |   
                                | | |   | | |   | | |   | | |   |   
                                | | | | | | | | | | | | | | | | |   
                                +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+  Ķ
    ͻ            ͼ 
      ͼ
     32-BIT CONNECTOR
