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

   ALPHASTATION 500

   Processor        Alpha                                         
   Processor Speed  266/300/333MHz                                
   Chip Set         DEC                                           
   Video Chip Set   None                                          
   Maximum Onboard  512MB                                         
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            2MB                                           
   BIOS             Unidentified                                  
   Dimensions       330mm x 218mm                                 
   I/O Options      Floppy drive interface, SCSI interface,       
                    external SCSI connector, parallel port, PS/2  
                    mouse port, serial ports (2), riser slot,     
                    audio card connector, media adapter unit      
                    connector, SROM port                          
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/C-D/34248-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Chassis fan power |    J1    | Floppy drive     |   J38    |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Cache fan         |    J3    | PS/2 mouse port  |   J39    |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Diagnostic port   |    J4    | Serial port 1    |   J40    |
   |-------------------+----------+------------------+----------|
   | Front panel       |    J5    | Serial port 2    |   J40A   |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | SROM port         |   J24    | Parallel port    |   J41    |
   |-------------------+----------+------------------+----------|
   | Media adapter     |   J32    | External SCSI    |   J42    |
   | unit connector    |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | Audio card        |   J36    | Riser slot       |   SL1    |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | SCSI interface    |   J37    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J2   | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Front panel button set as reset |  J6   |  Pins 1 & 2  |
   |   | switch                          |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Front panel button set as halt  |  J6   |  Pins 2 & 3  |
   |   | switch                          |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Secure console disabled         |  J9   |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Secure console enabled          |  J9   |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Primary console enabled         |  J10  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Alternate console enabled       |  J10  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J15  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J16  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Flash BIOS write protect        |  J18  |  Pins 2 & 3  |
   |   | disabled                        |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Flash BIOS write protect        |  J18  |  Pins 1 & 2  |
   |   | enabled                         |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J20  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J33  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J35  | Unidentified |
   |   | alter                           |       |              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIMM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       32MB       |    (4) 1M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 2M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |      128MB       |    (4) 4M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |      256MB       |    (4) 8M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 1M x 64     |    (4) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (4) 2M x 64     |    (4) 1M x 64     |
   |------------------+--------------------+--------------------|
   |      160MB       |    (4) 4M x 64     |    (4) 1M x 64     |
   |------------------+--------------------+--------------------|
   |      288MB       |    (4) 8M x 64     |    (4) 1M x 64     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (4) 2M x 64     |    (4) 2M x 64     |
   |------------------+--------------------+--------------------|
   |      192MB       |    (4) 4M x 64     |    (4) 2M x 64     |
   |------------------+--------------------+--------------------|
   |      320MB       |    (4) 8M x 64     |    (4) 2M x 64     |
   |------------------+--------------------+--------------------|
   |      256MB       |    (4) 4M x 64     |    (4) 4M x 64     |
   |------------------+--------------------+--------------------|
   |      384MB       |    (4) 8M x 64     |    (4) 4M x 64     |
   |------------------+--------------------+--------------------|
   |      512MB       |    (4) 8M x 64     |    (4) 8M x 64     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Note: 2MB cache is factory installed and is not            |
   | configurable.                                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       SROM SELECTION                       |
   |------------------------------------------------------------|
   |     Setting      | J11  | J12  | J13  | J14  | J17  | J19  |
   |------------------+------+------+------+------+------+------|
   |     Power up     |Closed| Open | Open | Open | Open | Open |
   |------------------+------+------+------+------+------+------|
   |   Mini console   | Open |Closed| Open | Open | Open | Open |
   |------------------+------+------+------+------+------+------|
   |  Floppy loader   | Open | Open |Closed| Open | Open | Open |
   |------------------+------+------+------+------+------+------|
   |     Mem test     | Open | Open | Open |Closed| Open | Open |
   |------------------+------+------+------+------+------+------|
   |MCHK mini console | Open | Open | Open | Open |Closed| Open |
   |------------------+------+------+------+------+------+------|
   |   No init mini   | Open | Open | Open | Open | Open |Closed|
   |     console      |      |      |      |      |      |      |
   +------------------------------------------------------------+