Some items that are not included in the PCB II update guide follow:

    1.  The Configure PC Board Layout screen includes settings for
        configuring the serial port for plotting from PCB.
        Options include:
                Serial Channel 1 or 2
                Baud rate      300, 1200, 2400, 4800, 9600, 19200
                Word Length    7 bits or 8 bits
                Parity         None, Even, Odd

    2.  The local configuration for Create NC Drill File includes
        an option to include a drill for all vias, regardless of via type.
        Previously, you had to select Through, Buried, or Blind vias
        to be included in the drill file.  Now you can select Through,
        Buried, Blind, or All.

    3.  The update guide references a file called ORCADESP.410 to be used
        to update existing DAT files.  The correct name for the file is
        ORCADESP.PCB.

PCB II limitations:

    1.  PCB will only work with SDT 4.10 or later.

    2.  PCB is not able to reliably access files on drives other than the
        one the software is installed on. If necessary, move the STRATEGY,
        DRIVER, and MODULE directories to the drive where your designs are
        stored.

    3.  The drivers for PCB are not compatible with those for the Release
        IV products.  Therefore, they are installed in a separate directory.
        You must be use these with PCB.

    4.  The ESP Configure Layout Tools is not able to read a tool file
        created by PCB.  The PCB Update Guide indicates that it is possible,
        though presently, it is not. (Either your system will hang or ESP
        will just not read the file.)  You overcome this by accessing
        the PCB overlay directly to load the tool file using one of the
        two approaches described below.
        
        DOS APPROACH

        Use this approach from the DOS command line.  The OrCAD program
        must not be running.

        Change to the design directory that PCB will run in.

            Type \ORCADEXE\PCB /C
            
        Now follow the steps in the section called LOADING THE TOOL FILE,
        later on in these instructions.

        ESP APPROACH

        This approach modifies a User Button on the PC Board Layout Tools
        Screen to provide access to the PCB overlay file.  To do this, the
        OrCAD program should be running and ESP should have the correct
        design directory selected.  Go to the PC Board Layout Tools screen.

        Now perform the following steps.

           - Click once on one of the unused User Buttons.  Select Modify 
             from the menu.
           - Select the Button Name Top Line box.  Type in "LOAD TOOL" and
             press <ENTER>.
           - Select the Button Name Bottom Line box.  Type in "FILE" and
             press <ENTER>.
           - Select the Command box.  Type in "\ORCADEXE\PCB" and press
             <ENTER>.
           - Select the Parameters box.  Type in "/C" and press <ENTER>.
           - Now click the OK button.

        That completes the button modification.  To use the button, click
        on it twice.  Now follow the instructions in the following section
        called LOADING THE TOOL FILE.

        LOADING THE TOOL FILE

        Now you can see the configuration screen for PCB.  This screen is
        used by PCB, independent of ESP.  Select PW to enter the PhotoWheel
        Configuration.  The Load Tool File command on this screen causes
        the tool file that you specify next to be loaded.

        The tool file apperture list now displays.  Type QUQ for Quit,
        Update, and Quit.  The tool file apperture list is now part of the
        configuration.
