DIGITAL EQUIPMENT CORPORATION

ALPHASTATION 500

Processor                  Alpha
Processor Speed            266/300/333MHz
Chip Set                   DEC
Video Chip Set             None
Maximum Onboard Memory     512MB
Maximum Video Memory       None
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

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Chassis fan power          J1        Floppy drive               J38
                                       interface

  Cache fan connector        J3        PS/2 mouse port            J39

  Diagnostic port            J4        Serial port 1              J40

  Front panel                J5        Serial port 2             J40A
  connector

  SROM port                  J24       Parallel port              J41

  Media adapter unit         J32       External SCSI              J42
  connector                            connector

  Audio card connector       J36       Riser slot                 SL1

  SCSI interface             J37

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Factory configured - do not           J2           Unidentified
      alter

  »   Front panel button set as             J6         Pins 1 & 2 closed
      reset switch

      Front panel button set as halt        J6         Pins 2 & 3 closed
      switch

  »   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 closed
      disabled

      Flash BIOS write protect              J18        Pins 1 & 2 closed
      enabled

  »   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       Open     Closed     Open      Open      Open       Open
   console

    Floppy      Open      Open     Closed     Open      Open       Open
   loader

  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