Premium Workstation/286 Motherboard                 AST Part Number 202214-001

The Premium Workstation/286 is a low-profile, highly integrated IBM compatible
computer system based on the Intel 80286 microprocessor.  Utilizing a
low-profile design, the system contains two 16-bit expansion slots (horizontal
mount), and most standard features are available directly on the motherboard.

The Workstation/286 is a two-speed system, running at either 8 or 10MHz.  The
system board comes standard with 512K of memory, and is expandable to 4MB on
the motherboard.  The system comes standard with one parallel port and two
serial ports.  Also standard are floppy and hard drive control direct from the
system board.  The hard drive interface supports AT-Imbedded drives.  Options
would include EGA and VGA video modules that do not require a BUS slot, and
support for the 80287 math co-processor (4 or 8MHz).


MEMORY CAPACITIES

This motherboard supports from 512K to 4096K of RAM using 100NS 256K or 1024K
SIMM Modules.  There are two banks on the board for RAM, and each bank accepts
two SIMMS.  A bank may NOT be partially populated (one SIMM).  It is not valid
to mix 256K and 1024K SIMMs on the System Board.  Below is a matrix of valid
memory configurations:

    BANK 0   BANK 1      TOTAL MEMORY
    ===============      ============
     512K      -         512K (0.5 MB)
     512K     512K      1024K (1.0 MB)
    2048K      -        2048K (2.0 MB)
    2048K    2048K      4096K (4.0 MB)

    NOTE: 512K = TWO 256K SIMMs
         2048K = TWO 1024K SIMMs


JUMPER SETTINGS

    JP1 thru JP6 - Memory Type

    These six jumper locations consist of three pins each.  In their default
    setting, connecting pins one and two, the SIMMs used must be 256K.  If
    1024K SIMMs are used, all six jumpers must be moved to connect pins two
    and three. These are the only two valid settings.

    JP7 - Eprom Type

    - Pins 1&2 = 27128 (Default)
    - Pins 2&3 = 27256


CONNECTORS

    J1 - Control Panel (LEDs; Reset)
    J2 - AT-Imbedded Hard Drive
    J3 - Floppy Drive Module
    J4 - BUS Expansion
    J5 - Power Supply
    J6 - Battery
    J7 - Video Module Option







LOCATIONS

    ͻ
                                                
                                               
                          *                          POWER
            J4----------> *                          SUPPLY
                          * J7                 
                          *                    
                          *                    
                                               
           * JP7                  J5            
                               ******      J6 *
                                               
                                               ͻ
                                             *  FLOPPY
                                             * *MODULE
     +---------------+                    J2 * *      
     | MEMORY BANK 1 |                       * *<---J3  
     +---------------+                       * *      
     | MEMORY BANK 0 |          JP 1-6       *        
     +---------------+          ******                
                                           J1 *       
    ͼͼ
