DELL COMPUTER CORPORATION
=========================

   SYSTEM V386SX/XX REVISION 1

   Processor    80386SX                                           
   Processor    16/25MHz                                          
   Speed        
   Chip Set     VLSI                                              
   Max. Onboard 8MB                                               
   DRAM         
   Cache        None                                              
   BIOS         AMI                                               
   Dimensions   330mm x 218mm                                     
   I/O Options  Floppy drive interface, IDE interface, video      
                interface, parallel port, PS/2 mouse port, serial 
                ports (2), video interface                        
   NPU Options  80387SX                                           

<gopher://bitreich.org/I/th99/m/C-D/31907-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | IDE interface LED |    J1    | Parallel port    |   CN3    |
   |-------------------+----------+------------------+----------|
   | Reset switch      |    J2    | Floppy drive     |   CN4    |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J3    | IDE interface    |   CN5    |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J4    | Video interface  |   CN6    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN1    | Mouse interface  |   CN7    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   CN2    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | VGA IRQ generation        |      JP1      | pins 1 & 2 |
   |   | disabled                  |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | VGA IRQ generation        |      JP1      | pins 2 & 3 |
   |   | enabled                   |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | On board VGA enabled      |      JP2      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | On board VGA disabled     |      JP2      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Single IDE drive enabled  |      JP3      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Dual IDE drive enabled    |      JP3      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Pipeline mode enabled     |      JP4      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Pipeline mode disabled    |      JP4      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Diskette drive generation |      JP5      | pins 1 & 2 |
   |   | of disk change disabled   |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Diskette drive generation |      JP5      | pins 2 & 3 |
   |   | of disk change enabled    |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type select color |      JP6      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select       |      JP6      | pins 2 & 3 |
   |   | monochrome                |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | CMOS memory normal        |      JP7      | pins 2 & 3 |
   |   | operation                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | CMOS memory clear         |      JP7      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Old style Multisync       |     SW1/1     |     On     |
   |   | monitor enabled           |               |            |
   |---+---------------------------+---------------+------------|
   |   | All other monitors        |     SW1/1     |    Off     |
   |   | enabled                   |               |            |
   |---+---------------------------+---------------+------------|
   |   | PS/2 style VGA installed  |     SW1/2     |     On     |
   |---+---------------------------+---------------+------------|
   |   | AT style VGA installed    |     SW1/2     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | 1024 x 768 interlaced     |     SW1/5     |     On     |
   |   | enabled                   |               |            |
   |---+---------------------------+---------------+------------|
   |   | 1024 x 768 non interlaced |     SW1/5     |    Off     |
   |   | enabled                   |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       2MB        |     (2) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       4MB        |     (2) 1M x 9     |     (2) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       8MB        |     (2) 4M x 9     |        NONE        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     VRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Size      |       Bank 0        |       Bank 1        |
   |----------------+---------------------+---------------------|
   |     256KB      |    (2) 256K x 4     |        NONE         |
   |----------------+---------------------+---------------------|
   |     512KB      |    (2) 256K x 4     |    (2) 256K x 4     |
   |------------------------------------------------------------|
   | Note:Bank 0 is factory installed and is not configurable.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              VIDEO REFRESH RATES (800 X 600)               |
   |------------------------------------------------------------|
   | Refresh rate  |    Colors     |    SW1/3     |    SW1/4    |
   |---------------+---------------+--------------+-------------|
   |     56Hz      |      16       |      On      |     On      |
   |---------------+---------------+--------------+-------------|
   |     56Hz      |      256      |      On      |     Off     |
   |---------------+---------------+--------------+-------------|
   |     56Hz      |      256      |      On      |     On      |
   |---------------+---------------+--------------+-------------|
   |     60Hz      |      16       |     Off      |     On      |
   |---------------+---------------+--------------+-------------|
   |     60Hz      |      256      |     Off      |     On      |
   |---------------+---------------+--------------+-------------|
   |     60Hz      |      256      |     Off      |     Off     |
   |---------------+---------------+--------------+-------------|
   |     72Hz      |      16       |     Off      |     Off     |
   |---------------+---------------+--------------+-------------|
   |     72Hz      |      16       |      On      |     Off     |
   +------------------------------------------------------------+