DIGITAL EQUIPMENT CORPORATION
=============================

   STARION 400, 500

   Device Type      Mainboard                                     
   Processor        Pentium                                       
   Processor Speed  60/66MHz                                      
   Chip Set         Unidentified                                  
   Video Chip Set   C & T                                         
   Maximum Onboard  128MB                                         
   Memory           
   Maximum Video    2MB                                           
   Memory           
   Cache            256/512KB                                     
   BIOS             Unidentified                                  
   Dimensions       254mm x 218mm                                 
   I/O Options      Floppy drive interface, IDE interface,        
                    parallel port, PS/2 mouse port, serial ports  
                    (2), VGA port, riser slot                     
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/C-D/35178-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose        | Location | Purpose             | Location |
   |----------------+----------+---------------------+----------|
   | VGA port       |   CN1    | PS/2 mouse port     |   CN5    |
   |----------------+----------+---------------------+----------|
   | Parallel port  |   CN2    | Floppy drive        |   CN6    |
   |                |          | interface           |          |
   |----------------+----------+---------------------+----------|
   | Serial port    |   CN3    | IDE interface       |   CN7    |
   |----------------+----------+---------------------+----------|
   | Serial port    |   CN4    | Riser slot          |   SL1    |
   |------------------------------------------------------------|
   | Note: VGA & serial ports are shown for informational       |
   | purposes only. The location may not be exact.              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  C1   | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  C2   | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  C3   | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | CMOS memory normal operation    |  JP2  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | CMOS memory clear               |  JP2  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Monitor type select color       |  JP6  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Monitor type select monochrome  |  JP6  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | ISA to IDE IRQ select IRQ14     |  JP9  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | ISA to IDE IRQ select IRQ15     |  JP9  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | On board video enabled          | JP13  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | On board video disabled         | JP13  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  S1   | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  S2   | Unidentified |
   |   | alter                           |       |              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SIMM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       2MB        |   (2) 256K x 36    |        None        |
   |------------------+--------------------+--------------------|
   |       4MB        |   (2) 512K x 36    |        None        |
   |------------------+--------------------+--------------------|
   |       4MB        |   (2) 256K x 36    |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       6MB        |   (2) 512K x 36    |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       8MB        |    (2) 1M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       8MB        |   (2) 512K x 36    |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       10MB       |   (2) 256K x 36    |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       12MB       |   (2) 512K x 36    |    (2) 1M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SIMM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 2M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       18MB       |   (2) 256K x 36    |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       20MB       |   (2) 512K x 36    |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (2) 1M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 4M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       34MB       |   (2) 256K x 36    |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (2) 1M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (2) 2M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 8M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       66MB       |   (2) 256K x 36    |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       68MB       |   (2) 512K x 36    |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       72MB       |    (2) 1M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (2) 4M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Note: The location of the cache is unidentified. The  |
   |      Starion 400 is upgradable to 256KB of cache and the   |
   |      Starion 500 is upgradable to 512KB of cache.          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 VIDEO MEMORY CONFIGURATION                 |
   |------------------------------------------------------------|
   |        Size        |      Bank 0       |      Bank 1       |
   |--------------------+-------------------+-------------------|
   |        1MB         |        1MB        |       None        |
   |--------------------+-------------------+-------------------|
   |        2MB         |        1MB        |        1MB        |
   |------------------------------------------------------------|
   | Note: The size of the video memory chips is unidentified.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   | Speed |      JP10       |      JP11       |      JP12      |
   |-------+-----------------+-----------------+----------------|
   | 60MHz |   Pins 2 & 3    |   Pins 2 & 3    |   Pins 2 & 3   |
   |       |     closed      |     closed      |     closed     |
   |-------+-----------------+-----------------+----------------|
   | 66MHz |   Pins 1 & 2    |   Pins 1 & 2    |   Pins 1 & 2   |
   |       |     closed      |     closed      |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |            IRQ             |              JP3              |
   |----------------------------+-------------------------------|
   |>>    |          4          |       Pins 1 & 2 closed       |
   |------+---------------------+-------------------------------|
   |      |         10          |       Pins 3 & 4 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |            IRQ             |              JP3              |
   |----------------------------+-------------------------------|
   |>>    |          3          |       Pins 5 & 6 closed       |
   |------+---------------------+-------------------------------|
   |      |         11          |       Pins 7 & 8 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |            IRQ             |              JP3              |
   |----------------------------+-------------------------------|
   |>>   |          7           |      Pins 9 & 10 closed       |
   |-----+----------------------+-------------------------------|
   |     |          5           |      Pins 11 & 12 closed      |
   +------------------------------------------------------------+