AST RESEARCH, INC.
==================

   ADVANTAGE+ (CHINA) 486 (202676-F08)

   Processor    80486SX/80486DX/CX486DX2/80486DX2/CX5X86          
   Processor    25/33/50(internal)/66(internal)MHz                
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 20MB                                              
   DRAM         
   Cache        None                                              
   BIOS         Unidentified                                      
   Dimensions   220mm x 220mm                                     
   I/O Options  Floppy drive interface, IDE interface, parallel   
                port, PS/2 mouse port, serial port, VGA feature   
                connector, VGA port, riser slot                   
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/A-B/33209-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose         | Location | Purpose            | Location |
   |-----------------+----------+--------------------+----------|
   | VGA port        |   CN1    | IDE interface LED  |   E13    |
   |-----------------+----------+--------------------+----------|
   | Parallel port   |   CN2    | VGA feature        |   J19    |
   |                 |          | connector          |          |
   |-----------------+----------+--------------------+----------|
   | Serial port     |   CN3    | IDE interface      |   J22    |
   |-----------------+----------+--------------------+----------|
   | PS/2 mouse port |   CN4    | Floppy drive       |   J24    |
   |                 |          | interface          |          |
   |-----------------+----------+--------------------+----------|
   | Reset switch    |   E11    | Chassis fan power  |   J28    |
   |-----------------+----------+--------------------+----------|
   | Power LED       |   E12    | Riser slot         |   SL1    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                | Jumper  | Position |
   |---------------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   E1    |   Open   |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   E2    |   Open   |
   |---+-----------------------------------+---------+----------|
   |>> | On board video enabled            |   E3    |  Closed  |
   |---+-----------------------------------+---------+----------|
   |   | On board video disabled           |   E3    |   Open   |
   |---+-----------------------------------+---------+----------|
   |>> | Monitor type select color         |   E4    |   Open   |
   |---+-----------------------------------+---------+----------|
   |   | Monitor type select monochrome    |   E4    |  Closed  |
   |---+-----------------------------------+---------+----------|
   |>> | Password enabled                  |   E5    |   Open   |
   |---+-----------------------------------+---------+----------|
   |   | Password disabled                 |   E5    |  Closed  |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   E8    |   Open   |
   |---+-----------------------------------+---------+----------|
   |>> | Flash BIOS normal operation       |   E14   |   Open   |
   |---+-----------------------------------+---------+----------|
   |   | Flash BIOS force update at boot   |   E14   |  Closed  |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   E16   |   Open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Size      |      Bank 0      |         Bank 1         |
   |----------------+------------------+------------------------|
   |      4MB       |       4MB        |          NONE          |
   |----------------+------------------+------------------------|
   |      5MB       |       4MB        |     (1) 256K x 32      |
   |----------------+------------------+------------------------|
   |      8MB       |       4MB        |      (1) 4M x 32       |
   |----------------+------------------+------------------------|
   |      20MB      |       4MB        |      (1) 4M x 32       |
   |------------------------------------------------------------|
   | Note: Bank 0 is factory installed and is not configurable. |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   |      E6      |   E7   |     E9     |    E10     |
   |----------+--------------+--------+------------+------------|
   | 80486SX  |  pins 1 & 2  |  Open  | pins 2 & 3 | pins 1 & 2 |
   |          |    closed    |        |   closed   |   closed   |
   |----------+--------------+--------+------------+------------|
   | 80486DX  |  pins 1 & 2  | Closed | pins 2 & 3 | pins 2 & 3 |
   |          |    closed    |        |   closed   |   closed   |
   |----------+--------------+--------+------------+------------|
   | 80486DX2 |  pins 1 & 2  | Closed | pins 2 & 3 | pins 2 & 3 |
   |          |    closed    |        |   closed   |   closed   |
   |------------------------------------------------------------|
   | Note: Upgrades are not supported. These settings are for   |
   | reference only.                                            |
   +------------------------------------------------------------+