MULTI-TECH SYSTEMS, INC.
========================

   MULTIARRAYSBC MT486DX2/XX, MT486DX4/XXX

   Processor          80486DX2/80486DX4                           
   Processor Speed    Unidentified                                
   Video Chipset      Unidentified                                
   Chipset            Unidentified                                
   Maximum Onboard    128MB DRAM                                  
   Memory             
   Cache              256KB                                       
   Maximum Video      512KB DRAM                                  
   Memory             
   BIOS               Phoenix                                     
   Dimensions         336.5 x 120.6mm                             
   I/O Options        Floppy drive interface, IDE interface,      
                      parallel port, serial ports (2), VGA port   
   Data Bus           Proprietary                                 
   NPU Options        None                                        
   Video Types        XVGA                                        
   Supported          
   Highest Resolution 1024 x 768                                  
   Supported          

<gopher://bitreich.org/I/th99/m/M-O/33724-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Label |        Function        | Label |
   |-------------------+-------+------------------------+-------|
   | 15-pin VGA port   |  CN1  | Floppy drive interface |  CN7  |
   |-------------------+-------+------------------------+-------|
   | Serial port 1     |  CN2  | Speaker                |  J20  |
   |-------------------+-------+------------------------+-------|
   | IDE interface     |  CN4  | IDE interface LED      |  J27  |
   |-------------------+-------+------------------------+-------|
   | Serial port 2     |  CN5  | Power LED              |  J28  |
   |-------------------+-------+------------------------+-------|
   | Parallel port     |  CN6  | Reset switch           |  SW1  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Setting                 | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Mainboard will not reset when DCD  |  J26  |   Open    |
   |   | of serial port 1 goes low          |       |           |
   |---+------------------------------------+-------+-----------|
   |   | Mainboard will reset when DCD of   |  J26  |  Closed   |
   |   | serial port 1 goes low             |       |           |
   |------------------------------------------------------------|
   |      Note:All jumpers not pictured on the diagram are      |
   |      factory configured and should not be altered.         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                            DRAM                            |
   |------------------------------------------------------------|
   |           Size           |             Bank 0              |
   |--------------------------+---------------------------------|
   |           8MB            |           (2) 1M x 36           |
   |--------------------------+---------------------------------|
   |           16MB           |           (2) 2M x 36           |
   |--------------------------+---------------------------------|
   |           32MB           |           (2) 4M x 36           |
   |--------------------------+---------------------------------|
   |           64MB           |           (2) 8M x 36           |
   |--------------------------+---------------------------------|
   |          128MB           |          (2) 16M x 36           |
   |------------------------------------------------------------|
   | Note: The board is factory configured with 4 megabytes of  |
   | RAM.                                                       |
   +------------------------------------------------------------+