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

   System 220e

   Processor        80286                                         
   Processor Speed  20MHz                                         
   Chip Set         VLSI                                          
   Max. Onboard     8MB                                           
   DRAM             
   Cache            None                                          
   BIOS             Phoenix                                       
   Dimensions       362mm x 182mm                                 
   I/O Options      Floppy drive interface, IDE interface,        
                    parallel port, riser card slot, serial ports  
                    (2), VGA port                                 
   NPU Options      80287                                         

<gopher://bitreich.org/I/th99/m/C-D/30939-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | VGA port          |   CN1    | Floppy drive     |   FDD    |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Parallel port     |   CN2    | IDE interface    |   IDE    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   CN3    | VGA pass-through |  JFEAT   |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN4    | Power LED &      |    P6    |
   |                   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | 16-bit riser card |   EXP    | Reset switch     |   W12    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              |  Jumper   |  Position  |
   |-----------------------------------+-----------+------------|
   |>> | Monitor type select color     |    W1     |   Closed   |
   |---+-------------------------------+-----------+------------|
   |   | Monitor type select           |    W1     |    Open    |
   |   | monochrome                    |           |            |
   |---+-------------------------------+-----------+------------|
   |>> | Factory test disabled         |    W2     |    Open    |
   |---+-------------------------------+-----------+------------|
   |   | Factory test enabled          |    W2     |   Closed   |
   |---+-------------------------------+-----------+------------|
   |>> | Factory configured - do not   |    W3     |    Open    |
   |   | alter                         |           |            |
   |---+-------------------------------+-----------+------------|
   |>> | Factory configured - do not   |    W4     |    Open    |
   |   | alter                         |           |            |
   |---+-------------------------------+-----------+------------|
   |>> | Serial port 2 enabled (IRQ4)  | W5 pins 1 |   Closed   |
   |   |                               |    & 2    |            |
   |---+-------------------------------+-----------+------------|
   |   | Serial port 2 disabled (IRQ4  | W5 pins 1 |    Open    |
   |   | not used)                     |    & 2    |            |
   |---+-------------------------------+-----------+------------|
   |>> | Serial port 1 enabled (IRQ3)  | W5 pins 3 |   Closed   |
   |   |                               |    & 4    |            |
   |---+-------------------------------+-----------+------------|
   |   | Serial port 1 disabled (IRQ3  | W5 pins 3 |    Open    |
   |   | not used)                     |    & 4    |            |
   |---+-------------------------------+-----------+------------|
   |>> | Factory configured - do not   | W5 pins 5 |    Open    |
   |   | alter (IRQ5 not used)         |    & 6    |            |
   |---+-------------------------------+-----------+------------|
   |>> | Parallel port enabled (IRQ7)  | W5 pins 7 |   Closed   |
   |   |                               |    & 8    |            |
   |---+-------------------------------+-----------+------------|
   |   | Parallel port disabled (IRQ7  | W5 pins 7 |    Open    |
   |   | not used)                     |    & 8    |            |
   |---+-------------------------------+-----------+------------|
   |>> | IDE interface enabled         |    W6     |   Closed   |
   |---+-------------------------------+-----------+------------|
   |   | IDE interface disabled        |    W6     |    Open    |
   |---+-------------------------------+-----------+------------|
   |>> | Floppy interface enabled      |    W7     |   Closed   |
   |---+-------------------------------+-----------+------------|
   |   | Floppy interface disabled     |    W7     |    Open    |
   |---+-------------------------------+-----------+------------|
   |>> | Factory configured - do not   |    W8     | pins 2 & 3 |
   |   | alter                         |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |>> | IDE drive installed select    |    W9     | pins 1 & 2 |
   |   | 1:1 interleave "Type B"       |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |   | IDE drive installed select    |    W9     | pins 2 & 3 |
   |   | 3:1 interleave "Type A"       |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |>> | VGA port enabled              |    W10    | pins 1 & 2 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |   | VGA port disabled             |    W10    | pins 2 & 3 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |>> | Tri-state diagnostic signal   |    W11    | pins 2 & 3 |
   |   | indicates true drive state    |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |   | Tri-state diagnostic signal   |    W11    | pins 1 & 2 |
   |   | forced to "passed diagnostic" |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |>> | Factory configured - do not   |    W13    | pins 1 & 2 |
   |   | alter                         |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |>> | BIOS type select 27256        |    W14    | pins 2 & 3 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |   | BIOS type select 27512        |    W14    | pins 1 & 2 |
   |   |                               |           |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       5MB        |     (4) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |               Type               |    W15     |    W16     |
   |----------------------------------+------------+------------|
   | Memory recognized by system      | pins 1 & 2 | pins 2 & 3 |
   | select total amount installed    |   closed   |   closed   |
   |----------------------------------+------------+------------|
   | Memory recognized by system      | pins 2 & 3 | pins 1 & 2 |
   | select only 256KB                |   closed   |   closed   |
   +------------------------------------------------------------+