
DIGITAL EQUIPMENT CORPORATION

ALPHAPC64

Processor              Alpha
Processor Speed        200/233/275MHz
Chip Set               DEC
Video Chip Set         None
Maximum Onboard Memory 512MB
Maximum Video Memory   None
Cache                  512/1024/2048/4096/8192KB
BIOS                   Unidentified
Dimensions             330mm x 221mm
I/O Options            32-bit PCI slots (4), floppy drive interface, IDE
                       interface, parallel port, PS/2 mouse port, serial
                       ports (2), cache slots (2)
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                Location          Purpose             Location

  Chassis fan               J1             IDE interface         J26
  power

  Chassis fan               J14            Serial port 2         J30
  power

  Reset switch        J3/pins 28 & 30      Serial port 1         J32

  IDE interface       J3/pins 29 & 31      PS/2 mouse port       J34
  LED

  Power LED &             J3/pins          32-bit PCI         PC1  PC4
  keylock             32,34,36,38,40       slots

  Speaker           J3/pins 33, 35, 37,    Cache slot            SL1
                            39

  Floppy drive              J24            Cache slot            SL2
  interface

  Parallel port             J25

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     SROM test connector                      J2              N/A

     Flash BIOS update disabled              J16           Pins 2 & 3
                                                              closed

      Flash BIOS update enabled               J16           Pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     16MB        (2) 512K x     (2) 512K x     (2) 512K x   (2) 512K x 36
                     36            36             36

     16MB       (2) 1M x 36    (2) 1M x 36       None           None

     24MB       (2) 1M x 36    (2) 1M x 36    (2) 1M x 36       None

     32MB       (2) 1M x 36    (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     32MB       (2) 4M x 36       None           None           None

     64MB       (2) 4M x 36    (2) 4M x 36       None           None

     64MB       (2) 8M x 36       None           None           None

     96MB       (2) 4M x 36    (2) 4M x 36    (2) 4M x 36       None

    128MB       (2) 4M x 36    (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

    128MB       (2) 8M x 36    (2) 8M x 36       None           None

    128MB       (2) 16M x 36      None           None           None

    192MB       (2) 8M x 36    (2) 8M x 36    (2) 8M x 36       None

    256MB       (2) 8M x 36    (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

    256MB       (2) 16M x 36   (2) 16M x 36      None           None

    384MB       (2) 16M x 36   (2) 16M x 36   (2) 16M x 36      None

    512MB       (2) 16M x 36   (2) 16M x 36   (2) 16M x 36  (2) 16M x 36

                    CACHE CONFIGURATION

       Size                SL1                 SL2

       512KB              256KB               256KB

        2MB                1MB                 1MB

        8MB                4MB                 4MB

  Note: The sizes of the cache modules are unidentified.

                        CACHE JUMPER CONFIGURATION

       Size         J3/pins 11 & 12    J3/pins 13 & 14   J3/pins 15 & 16

       None             Closed             Closed             Closed

      512KB              Open              Closed             Closed

       1MB              Closed              Open              Closed

       2MB               Open               Open              Closed

       4MB              Closed             Closed              Open

       8MB               Open              Closed              Open

                        CACHE ADDRESS CONFIGURATION

    Size       J15/pins 1 &   J3/pins 3 &    J3/pins5 & 6   J3/pins7 & 8
                    2              4

    512KB         Open           Open           Open            Open

     1MB         Closed          Open           Open            Open

     2MB         Closed         Closed          Open            Open

     4MB         Closed         Closed         Closed           Open

     8MB         Closed         Closed         Closed          Closed

                         CACHE SPEED CONFIGURATION

      Speed         J3/pins 17 & 18    J3/pins 19 & 20   J3/pins 21 & 22

       6ns               Open              Closed             Closed

       8ns              Closed              Open              Closed

       10ns              Open               Open              Closed

       12ns             Closed             Closed              Open

       15ns              Open              Closed              Open

                           CPU DIVISOR SELECTION

    Divisor       J3/pins 1 &    J3/pins 3 &   J3/pins 5 &    J3/pins 7 &
                       2             4              6             8

       2            Closed         Closed        Closed         Closed

       3            Closed         Closed        Closed          Open

       4            Closed         Closed         Open          Closed

       5            Closed         Closed         Open           Open

   6 (200MHz)       Closed          Open         Closed         Closed

   7 (233MHz)       Closed          Open         Closed          Open

       8            Closed          Open          Open          Closed

   9 (275MHz)       Closed          Open          Open           Open

       10            Open          Closed        Closed         Closed

       11            Open          Closed        Closed          Open

       12            Open          Closed         Open          Closed

       13            Open          Closed         Open           Open

       14            Open           Open         Closed         Closed

       15            Open           Open         Closed          Open

       16            Open           Open          Open          Closed

       17            Open           Open          Open           Open

