DIGITAL EQUIPMENT CORPORATION

ALPHA XL

Processor              Alpha
Processor Speed        300/366/433MHz
Chip Set               Unidentified
Video Chip Set         None
Maximum Onboard Memory 512MB
Maximum Video Memory   None
Cache                  Unidentified
BIOS                   Unidentified
Dimensions             330mm x 218mm
I/O Options            32-bit PCI slots (3), CPU slot
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Unidentified               CN1       Unidentified               CN4

  Unidentified               CN2       32-bit PCI slots         PC1 – PC3

  Unidentified               CN3       CPU slot                   SL1

                        USER CONFIGURABLE SETTINGS

                Function                      Label          Position

  »   SCSI autosense enabled                   J21          Pins 1 & 2
                                                              closed

      SCSI autosense & termination             J21          Pins 2 & 3
      disabled                                                closed

  »   CMOS memory normal operation             J22          Pins 1 & 2
                                                              closed

      CMOS memory clear                        J22          Pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      32MB        (4) 2M x 36        None

      64MB        (4) 2M x 36    (4) 2M x 36

      64MB        (4) 4M x 36        None

      96MB        (4) 4M x 36    (4) 2M x 36

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

     128MB        (4) 8M x 36        None

     160MB        (4) 8M x 36    (4) 2M x 36

     192MB        (4) 8M x 36    (4) 4M x 36

     256MB        (4) 8M x 36    (4) 8M x 36

     256MB        (4) 16M x 36       None

     288MB        (4) 16M x 36   (4) 2M x 36

     320MB        (4) 16M x 36   (4) 4M x 36

     384MB        (4) 16M x 36   (4) 8M x 36

     512MB        (4) 16M x 36   (4) 16M x 36

                                                                   [Image]

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Factory configured – do not alter        J5              Open

  »   Factory configured – do not alter        J6              Open

  »   Flash BIOS write enabled                J15           Pins 2 & 3
                                                              closed

      Flash BIOS write disabled               J15           Pins 1 & 2
                                                              closed

  »   Console select primary                  J17           Pins 2 & 3
                                                              closed

      Console select alternate                J17           Pins 1 & 2
                                                              closed

  »   Console secure disabled                 J18           Pins 2 & 3
                                                              closed

      Console secure enabled                  J18           Pins 1 & 2
                                                              closed

                          SROM PROGRAM SELECTION

       Speed           J2       J3       J7       J9       J10      J11

  »     Power up      Open     Open     Open     Open     Open     Closed
        enabled

        MCHK mini     Open     Closed   Open     Open     Open      Open
        console

      MFG mem test    Open     Open     Closed   Open     Open      Open

        Failsafe      Open     Open     Open     Closed   Open      Open
         floppy

         No init      Closed   Open     Open     Open     Open      Open
      mini-console

      Mini console    Open     Open     Open     Open     Closed    Open

[Image]

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Console secure disabled                  J9           Pins 2 & 3
                                                              closed

      Console secure enabled                   J9           Pins 1 & 2
                                                              closed

  »   Console select primary                  J10           Pins 2 & 3
                                                              closed

      Console select alternate                J10           Pins 1 & 2
                                                              closed

  »   Factory configured – do not alter       J15              Open

  »   Factory configured – do not alter       J16              Open

  »   Flash BIOS write enabled                J18           Pins 2 & 3
                                                              closed

      Flash BIOS write disabled               J18           Pins 1 & 2
                                                              closed

                          SROM PROGRAM SELECTION

       Speed           J11      J12      J13      J14      J17      J19

  »     Power up      Closed   Open     Open     Open     Open      Open
        enabled

      Mini console    Open     Closed   Open     Open     Open      Open

        Failsafe      Open     Open     Closed   Open     Open      Open
         floppy

      MFG mem test    Open     Open     Open     Closed   Open      Open

        MCHK mini     Open     Open     Open     Open     Closed    Open
        console

         No init      Open     Open     Open     Open     Open     Closed
      mini-console

                            CPU SPEED SELECTION

  Speed    SW1/1   SW1/2   SW1/3   SW1/4   SW2/1    SW2/2   SW2/3   SW2/4

  366MHz   Off      On      Off     Off     Off     Off      On      Off

  433MHz   Off      Off     On      Off     On      Off     Off      On