SHORT PAK                                           AST Part Number 202085-001

The ShortPak is a memory expansion adapter for the IBM PC, PC/XT, and 100%
compatibles running at 4.77 MHz.  The ShortPak can be configured with from 64K
to 576K of memory using industry standard 64K and 256K DRAMS with a minimum
speed of 150NS.  This board will bring a PC up to it's DOS limit of 640K.  It
does NOT support memory above 640K, such as extended memory or expanded memory
(EMS).


SWITCH SETTINGS

    STARTING ADDRESS (MEMORY IN SYSTEM BEFORE SHORTPAK INSTALLED)

                   S1   S2   S3
                  ---- ---- ----
         64K      OFF  OFF  OFF
        128K      OFF  OFF   ON
        192K      OFF   ON  OFF
        256K*     OFF   ON   ON
        320K       ON  OFF  OFF
        384K       ON  OFF   ON
        448K       ON   ON  OFF
        512K       ON   ON   ON

        * = Factory Default


    MEMORY INSTALLED ON SHORTPAK

                  S4   S5   S6   BANK 0   BANK 1   BANK 2
                 ---  ---  ---   ------   ------   ------
          0K     OFF  OFF  OFF      -        -        -
         64K     OFF  OFF   ON     64K       -        -
        128K     OFF   ON  OFF     64K      64K       -
        256K     OFF   ON   ON    256K       -        -
        320K      ON  OFF  OFF     64K     256K       -
        384K*     ON  OFF   ON     64K      64K     256K
        512K      ON   ON  OFF    256K     256K       -
        576K      ON   ON   ON     64K     256K     256K

        S7 - NOT APPLICABLE

        S8 - PARITY ENABLE (recommend "ON" at all times)


SWITCH LOCATIONS

    +---------------------------------+
    |                                 | +---
    |                                 +-+
    |                                 | |
    |                      +-------+  | |
    |                      |  SW1  |  | |
    |                      +-------+  | |
    |                                 | |
    |                                 | |
    |                                 | |
    |                                 +-+
    +---------------+            +----+ |
                    +------------+      |
                                        |