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

   SYSTEM 40XX/XE

   Processor        80486DX/80486DX2                              
   Processor Speed  33/50(internal)/66(internal)MHz               
   Chip Set         Intel                                         
   Video Chip Set   Unidentified                                  
   Maximum Onboard  128MB                                         
   Memory           
   Maximum Video    1MB                                           
   Memory           
   Cache            Unidentified                                  
   BIOS             Unidentified                                  
   Dimensions       330mm x 218mm                                 
   I/O Options      Floppy drive interface, IDE interface,        
                    parallel port, PS/2 mouse port, serial ports  
                    (2), feature connector, VGA port, riser slot, 
                    cache slot                                    
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/C-D/33648-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Feature connector |   CN1    | External battery |   JBAT   |
   |-------------------+----------+------------------+----------|
   | PS/2 mouse port   |   CN2    | Front panel      |  JCTRL   |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   CN3    | IDE interface    |   JLED   |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN4    | Power staging    |  PROUT   |
   |                   |          | connector (out)  |          |
   |-------------------+----------+------------------+----------|
   | Parallel port     |   CN5    | Power staging    |  PWRIN   |
   |                   |          | connector (in)   |          |
   |-------------------+----------+------------------+----------|
   | VGA port          |   CN6    | Riser slot       |   SL1    |
   |-------------------+----------+------------------+----------|
   | IDE interface     |   CN7    | Cache slot       |   SL2    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   CN8    |                  |          |
   | interface         |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Factory configured - do not     | 30MHZ | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | AT ROM card disabled            | ATRM  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | AT ROM card enabled             | ATRM  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | System/video BIOS normal        | CLRB  |     Open     |
   |   | operation                       |       |              |
   |---+---------------------------------+-------+--------------|
   |   | System/video BIOS clear         | CLRB  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Flash BIOS normal operation     | CLRE  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | Flash BIOS clear                | CLRE  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  CN9  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Flash BIOS upgradable with a    | EFLU  |    Closed    |
   |   | diskette                        |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Flash BIOS not upgradable with  | EFLU  |     Open     |
   |   | a diskette                      |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Password enabled                | EPWD  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | Password disabled               | EPWD  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | On board video enabled          | EVGA  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | On board video disabled         | EVGA  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | I/O controller address select   | IOALT |     Open     |
   |   | 26Eh - 26Fh                     |       |              |
   |---+---------------------------------+-------+--------------|
   |   | I/O controller address select   | IOALT |    Closed    |
   |   | 398h - 398Fh                    |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J1   | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J2   | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J3   | Unidentified |
   |   | alter                           |       |              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (1) 512K x  | (1) 512K x  |    None    |    None    |
   |      |     36      |     36      |            |            |
   |------+-------------+-------------+------------+------------|
   | 6MB  | (1) 1M x 36 | (1) 512K x  |    None    |    None    |
   |      |             |     36      |            |            |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 512K x | (1) 512K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 16MB | (1) 2M x 36 | (1) 2M x 36 |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 20MB | (1) 2M x 36 | (1) 2M x 36 | (1) 512K x | (1) 512K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 24MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 1M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   |  Size  |    Bank 0    |  Bank 1  |   Bank 2   |   Bank 3   |
   |--------+--------------+----------+------------+------------|
   |  32MB  | (1) 4M x 36  | (1) 4M x |    None    |    None    |
   |        |              |    36    |            |            |
   |--------+--------------+----------+------------+------------|
   |  32MB  | (1) 2M x 36  | (1) 2M x |  (1) 2M x  |  (1) 2M x  |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  36MB  | (1) 4M x 36  | (1) 4M x | (1) 512K x | (1) 512K x |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  40MB  | (1) 4M x 36  | (1) 4M x |  (1) 1M x  |  (1) 1M x  |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  48MB  | (1) 4M x 36  | (1) 4M x |  (1) 2M x  |  (1) 2M x  |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  64MB  | (1) 4M x 36  | (1) 4M x |  (1) 4M x  |  (1) 4M x  |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  64MB  | (1) 8M x 36  | (1) 8M x |    None    |    None    |
   |        |              |    36    |            |            |
   |--------+--------------+----------+------------+------------|
   |  68MB  | (1) 8M x 36  | (1) 8M x | (1) 512K x | (1) 512K x |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  72MB  | (1) 8M x 36  | (1) 8M x |  (1) 1M x  |  (1) 1M x  |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  80MB  | (1) 8M x 36  | (1) 8M x |  (1) 2M x  |  (1) 2M x  |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   |  96MB  | (1) 8M x 36  | (1) 8M x |  (1) 4M x  |  (1) 4M x  |
   |        |              |    36    |     36     |     36     |
   |--------+--------------+----------+------------+------------|
   | 128MB  | (1) 8M x 36  | (1) 8M x |  (1) 8M x  |  (1) 8M x  |
   |        |              |    36    |     36     |     36     |
   |------------------------------------------------------------|
   | Note: The location of banks 0, 1, 2 & 3 are unidentified.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Note: The size of the cache modules are unidentified.      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 VIDEO MEMORY CONFIGURATION                 |
   |------------------------------------------------------------|
   |       Size        |       Bank 0        |      Bank 1      |
   |-------------------+---------------------+------------------|
   |       512KB       |        512KB        |       None       |
   |-------------------+---------------------+------------------|
   |        1MB        |        512KB        |      512KB       |
   |------------------------------------------------------------|
   | Note: The location of banks 0 & 1 are unidentified. The    |
   | size of the chips are unidentified.                        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |       Speed        |       25MHZ       |       33MHZ       |
   |--------------------+-------------------+-------------------|
   |       33MHz        |       Open        |      Closed       |
   |--------------------+-------------------+-------------------|
   |       50iMHz       |      Closed       |       Open        |
   |--------------------+-------------------+-------------------|
   |       66iMHz       |       Open        |      Closed       |
   +------------------------------------------------------------+