
MICROWAY, INC.

PC164 SCREAMER

Processor               Alpha
Processor Speed         300/333/366/400/433MHz
Chip Set                Digital
Video Chip Set          None
Maximum Onboard Memory  512MB
Maximum Video Memory    None
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

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Chassis fan power           J2       Chassis fan power          J22

  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 & keylock        J27

  IDE interface 1            J14       IDE interface LED          J28

  PS/2 mouse port            J15       SROM test port             J32

  Parallel port              J16       32-bit PCI slots         PC1 & PC2

  Floppy drive interface     J18       64-bit PCI slots         SL1 & SL2

  Chassis fan power          J21

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Factory configured - do not alter   J30 pins 9 &         Open
                                               10

     Factory configured - do not alter    J30 pins 15         Open
                                              & 16

     Mini debugger disabled               J30 pins 21         Open
                                              & 22

      Mini debugger enabled                J30 pins 21        Closed
                                              & 22

     Boot option select Windows NT ARC    J30 pins 23         Open
      firmware loaded                         & 24

      Boot option select fail safe boot    J30 pins 23        Closed
      loaded                                  & 24

     Jumper not used                      J30 pins 25         N/A
                                              & 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

