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

   ALPHAPC 164

   Processor        Alpha                                         
   Processor Speed  300/333/366/400/433MHz                        
   Chip Set         Digital                                       
   Video Chip Set   None                                          
   Maximum Onboard  512MB                                         
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            1024KB                                        
   BIOS             Unidentified                                  
   Dimensions       305mm x 244mm                                 
   I/O Options      32-bit PCI slots (2), 64-bit PCI slots (2),   
                    floppy drive interface, IDE interfaces (2),   
                    parallel port, PS/2 mouse port, serial ports  
                    (2)                                           
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/C-D/34061-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Chassis fan power |    J2    | Chassis fan      |   J22    |
   |                   |          | power            |          |
   |-------------------+----------+------------------+----------|
   | Power connector   |    J3    | Speaker          |   J23    |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J4    | Reset switch     |   J24    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   J4A    | Halt connector   |   J25    |
   |-------------------+----------+------------------+----------|
   | IDE interface 2   |   J13    | Power LED &      |   J27    |
   |                   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | IDE interface 1   |   J14    | IDE interface    |   J28    |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | PS/2 mouse port   |   J15    | SROM test port   |   J32    |
   |-------------------+----------+------------------+----------|
   | Parallel port     |   J16    | 32-bit PCI slots |  PC1 &   |
   |                   |          |                  |   PC2    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   J18    | 64-bit PCI slots |  SL1 &   |
   | interface         |          |                  |   SL2    |
   |-------------------+----------+------------------+----------|
   | Chassis fan power |   J21    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              |  Label   |  Position  |
   |------------------------------------+----------+------------|
   |>> | Factory configured - do not    | J30 pins |    Open    |
   |   | alter                          |  9 & 10  |            |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    | J30 pins |    Open    |
   |   | alter                          | 15 & 16  |            |
   |---+--------------------------------+----------+------------|
   |>> | Mini debugger disabled         | J30 pins |    Open    |
   |   |                                | 21 & 22  |            |
   |---+--------------------------------+----------+------------|
   |   | Mini debugger enabled          | J30 pins |   Closed   |
   |   |                                | 21 & 22  |            |
   |---+--------------------------------+----------+------------|
   |>> | Boot option select Windows NT  | J30 pins |    Open    |
   |   | ARC firmware loaded            | 23 & 24  |            |
   |---+--------------------------------+----------+------------|
   |   | Boot option select fail safe   | J30 pins |   Closed   |
   |   | boot loaded                    | 23 & 24  |            |
   |---+--------------------------------+----------+------------|
   |>> | Jumper not used                | J30 pins |    N/A     |
   |   |                                | 25 & 26  |            |
   |---+--------------------------------+----------+------------|
   |>> | Flash BIOS update enabled      |   J31    | Pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Flash BIOS update disabled     |   J31    | Pins 1 & 2 |
   |   |                                |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       16MB       |    (4) 1M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |     32MB (A)     |    (4) 1M x 36     |    (4) 1M x 36     |
   |------------------+--------------------+--------------------|
   |     32MB (B)     |    (4) 2M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |     64MB (A)     |    (4) 2M x 36     |    (4) 2M x 36     |
   |------------------+--------------------+--------------------|
   |     64MB (B)     |    (4) 4M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |    128MB (A)     |    (4) 4M x 36     |    (4) 4M x 36     |
   |------------------+--------------------+--------------------|
   |    128MB (B)     |    (4) 8M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |    256MB (A)     |    (4) 8M x 36     |    (4) 8M x 36     |
   |------------------+--------------------+--------------------|
   |    256MB (B)     |    (4) 16M x 36    |        None        |
   |------------------+--------------------+--------------------|
   |    512MB (B)     |    (4) 16M x 36    |    (4) 16M x 36    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |             Size              |             J1             |
   |-------------------------------+----------------------------|
   |             16MB              |           Closed           |
   |-------------------------------+----------------------------|
   |           32MB (A)            |            Open            |
   |-------------------------------+----------------------------|
   |           32MB (B)            |           Closed           |
   |-------------------------------+----------------------------|
   |           64MB (A)            |            Open            |
   |-------------------------------+----------------------------|
   |           64MB (B)            |           Closed           |
   |-------------------------------+----------------------------|
   |           128MB (A)           |            Open            |
   |-------------------------------+----------------------------|
   |           128MB (B)           |           Closed           |
   |-------------------------------+----------------------------|
   |           256MB (A)           |            Open            |
   |-------------------------------+----------------------------|
   |           256MB (B)           |           Closed           |
   |-------------------------------+----------------------------|
   |           512MB (B)           |            Open            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Note: Board can be installed with either 1MB or 2MB of     |
   | cache. The size of the chips is unidentified.              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |          Size          |                J30                |
   |------------------------+-----------------------------------|
   |          1MB           |    Pins 11 & 12, 13 & 14 open     |
   |------------------------+-----------------------------------|
   |          2MB           | Pins 11 & 12 open, 13 & 14 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE SPEED CONFIGURATION                  |
   |------------------------------------------------------------|
   |           Speed            |              J30              |
   |----------------------------+-------------------------------|
   |            9ns             |  Pins 17 & 18, 19 & 20 open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |           Speed            |              J30              |
   |----------------------------+-------------------------------|
   |           300MHz           |   Pins 3 & 4, 5 & 6 closed    |
   |----------------------------+-------------------------------|
   |           333MHz           |   Pins 3 & 4, 7 & 8 closed    |
   |----------------------------+-------------------------------|
   |           366MHz           |       Pins 3 & 4 closed       |
   |----------------------------+-------------------------------|
   |           400MHz           |   Pins 5 & 6, 7 & 8 closed    |
   |----------------------------+-------------------------------|
   |           433MHz           |       Pins 5 & 6 closed       |
   +------------------------------------------------------------+