SixPakPlus (Type 4)                                 AST Part Number 201177-004

The SixPakPlus is a multi-function memory expansion board designed for use
with the IBM PC, XT, and 100% compatibles running at 4.77 MHz.  In it's
standard configuration, it comes with anywhere between 64K and 384K of RAM
using industry standard 64K and/or 256K dynamic RAM chips; a
Clock/Calander; a Serial Port configurable as COM1: or COM2:; and a
Parallel Port configurable as LPT1: or LPT2:.  All memory installed on the
SixPakPlus is designed to expand a PC to it's 640K maximum.  It does not
support Extended or EMS/EEMS type memory.  There is an option available for
adding a Game Port.


SWITCH SETTINGS

    STARTING ADDRESS (Memory in system before 6PAK 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 6-PAK

                  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)


JUMPER SETTINGS

    PORT ENABLE JUMPER BLOCK (Reading from Left to Right)

        1) Installed to Enable Serial as COM1:   * (3F8)
        2) Installed to Enable Serial as COM2:     (2F8)
        3) Installed to Enable Parallel as LPT1: *
        4) Installed to Enable Parallel as LPT2:
        5) Installed to Enable Game Port           (201)
        6) Installed to Enable Clock/Calendar    * (2C0)

    IRQ ENABLE JUMPER BLOCK

        IRQ 3 - Installed if COM2: is Enabled
        IRQ 4 - Installed if COM1: is Enabled
        IRQ 7 - Should be installed if Parallel Port is LPT1:   *

RS-232C JUMPER BLOCK

    RS-232 configuration block is made up of six pairs of jumpers.  Their
    function is to minimize the need for making special I/O cables for some
    unique serial devices. The normal setting is to install three jumpers on
    the "two" positions, allowing normal RS-232 operation. In rare instances,
    a device may require that the CTS, DSR, or DCD signals be forced true. In
    these cases, move the corresponding jumpers to the "one" position.


SWITCH AND JUMPER LOCATIONS

    *------------------------------------------------*
    |                                                | *---
    |              BATT                              |-|
    |               ****** PORT ENABLE      RS *     | |
    |                     JUMPER BLOCK     232 *     | |
    |                                    BLOCK *     | |
    |                                                | |
    |                   IRQ JUMPER BLOCK ***         | |
    |                                  +-------+     | |
    |                                  | 1 - 8 | SW1 | |
    |                                  +-------+     |-|
    *------------------------------*            *----* |
                                   *------------*      |
                                                       |

note:
This document replaces the technical bullitin originally assigned to this document number, and contains more pertainent information.
1/1/96
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