
DIGITAL EQUIPMENT CORPORATION

PRIORIS XL

Device Type         Mainboard
Processor           80486DX/80486DX2/Pentium
Processor Speed     25/33/50(internal)/66(internal)MHz
Chip Set            Unidentified
Video Chip Set      Unidentified
Maximum Onboard     128MB (80486)/512MB (Pentium)
Memory
Maximum Video       1MB
Memory
Cache               128/256KB
BIOS                Unidentified
Dimensions          305mm x 244mm
I/O Options         32-bit PCI slots (3), floppy drive interface, IDE
                    interface, SCSI interface, Wide Ultra SCSI interface,
                    parallel port, PS/2 mouse port, serial ports (2), VGA
                    feature connector, VGA port, CPU slot
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Parallel port              CN1       IDE interface              CN9

  VGA port                   CN2       VGA feature connector      CN10

  Serial port                CN3       5v auxiliary power          P1

  Serial port                CN4       5v power                    P2

  PS/2 mouse port            CN5       3.3v power                  P3

  Ultra Wide SCSI            CN6       32-bit PCI slots         PC1  PC3
  interface

  SCSI interface             CN7       CPU slot                   SL1

  Floppy drive interface     CN8

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     VGA IRQ9 disabled                        J9              Open

      VGA IRQ9 enabled                         J9             Closed

     On board I/O enabled                    J17             Closed

      On board I/O disabled                   J17              Open

     Wide SCSI disabled                      J22              Open

      Wide SCSI enabled                       J22             Closed

     Monitor type select color               J37             Closed

      Monitor type select monochrome          J37              Open

     Password normal operation               J38              Open

      Password clear                          J38             Closed

     BIOS normal operation                   J39              Open

      BIOS recovery mode                      J39             Closed

     BIOS upgrade enabled                    J41             Closed

      BIOS upgrade disabled                   J41              Open

     Boot block enabled                      J50           Pins 1 & 2
                                                              closed

      Boot block disabled                     J50           Pins 2 & 3
                                                              closed

                           SIMM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     8MB        (2) 1M x 36       None           None          None

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

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

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

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

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

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

                        SIMM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

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

     40MB        (2) 4M x 36   (2) 1M x 36        None           None

     48MB        (2) 4M x 36   (2) 2M x 36        None           None

     48MB        (2) 2M x 36   (2) 2M x 36    (2) 2M x 36        None

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

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

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

     72MB        (2) 8M x 36   (2) 1M x 36        None           None

     80MB        (2) 8M x 36   (2) 2M x 36        None           None

     96MB        (2) 8M x 36   (2) 4M x 36        None           None

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

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

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

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

     136MB       (2) 16M x 36  (2) 1M x 36        None           None

     144MB       (2) 16M x 36  (2) 2M x 36        None           None

     152MB       (2) 16M x 36  (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     160MB       (2) 16M x 36  (2) 4M x 36        None           None

     176MB       (2) 16M x 36  (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     192MB       (2) 16M x 36  (2) 8M x 36        None           None

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

     224MB       (2) 16M x 36  (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

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

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

     272MB       (2) 16M x 36  (2) 16M x 36   (2) 1M x 36    (2) 1M x 36

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

     320MB       (2) 16M x 36  (2) 16M x 36   (2) 4M x 36    (2) 4M x 36

     320MB       (2) 16M x 36  (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

     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

  Note: If 80486 module is installed, it will accept up to 128MB.

               VIDEO MEMORY CONFIGURATION

  Note: the size of the video memory is unidentified.

          CPU TYPE SELECTION

       Type               J27

       Intel              Open

  All other types        Closed

                            CPU CARD SELECTION

           Type                      J24                     J25

   Single CPU installed       Pins 1 & 2 closed       Pins 1 & 2 closed

  Multiple CPUs installed     Pins 2 & 3 closed       Pins 2 & 3 closed

[Image]

     CACHE CONFIGURATION

     Size          Bank 0

     128KB      (4) 32K x 8

     256KB      (4) 64K x 8

                        CACHE JUMPER CONFIGURATION

      Size               J8                 J9                 J10

      128KB           Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

      256KB           Pins 2 & 3        Pins 2 & 3      Pins 2 & 3 closed
                       closed             closed

           CPU SPEED SELECTION

        Speed                J12

        25MHz         Pins 1 & 2 closed

        33MHz         Pins 2 & 3 closed

       50iMHz         Pins 1 & 2 closed

       66iMHz         Pins 2 & 3 closed

