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New Database File Type

L-Edit 16 and up supports a second database file type called OpenAccess. As a result, L-Edit 16 does not automatically read in the CNF defaults file (ledit.tdb) and does not start with a new cell in a new design file, ready for the user to begin drawing. To work around this problem, CNF IT has updated the shortcuts for starting L-Edit. But, there are still side effects.one can first open the CNF ledit.tdb file. See below for more information.

CNF Files Locations

These directories includes the ledit.tdb file .

Windows

c:\Program Files\MentorGraphics\cnf

Linux

/usr/local/cnf/ledit

Other Linux File Locations

On linux, in the file dialogue you can type in windows equivalent drive letters 'W:' and 'V:' to access your home folder or the lab transfer share.

DO NOT attempt to browse into the top level "/afs" folder. This will lock up L-Edit.

Starting L-Edit and Opening ledit.tdb

On the CNF conversion computers, Korat and Minx, type in: ledit .

On Minx only, the L-Edit command now points directly to the CNF defaults file, ledit.tdb.

(DO NOT attempt to run more than one copy of LEdit at the same time).

Use On Korat, use File - Open to open /usr/local/cnf/ledit/ ledit.tdb from the CNF Files Location mentioned above.

This file is a system file and cannot be updated by users. So, upon starting L-Edit, users will receive the following error message: 

File "...ledit.tdb" can be opened only for reading. Changes to it cannot be saved.

Do you want to open it as Read-Only?

Answer Yes. If users answer "No", L-Edit will not load the CNF default settings and will not start with a new Cell in which to draw. 

When saving the design file for the first time, users will choose Save As from the File menu. In the Save dialog box, users will then need to browse to a location to save the ledit TDB file. In the Linux version of L-Edit, this will be My Computer - W: and then some subfolder of the AFS home folder.

New TDB (Design) File

Re-start L-Edit (MINX Only)

The best way to start a brand new L-Edit design file is to close and re-open L-Edit. Closing and re-opening L-Edit will reload the CNF defaults and start the user with a fresh cell in which to draw.

CreateNewTDBFile (MINX Only)

With the help of Tanner technical support, CNF IT has installed a macro file to assist with the steps of After creating a new TDB design file with the CNF defaults from ledit.tdb.

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file

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Unlike when freshly starting L-Edit, users , you will not get a new cell in which to draw (this would appear to be a bug in L-Edit). Users can instantiate a new cell by either:

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1. Make sure any currently open design files are saved under a unique name.
2. File menu
3. New
4. Design
5. TDB (single-user, single file)
6. Select to browse to a location to save the new TDB file and give the file a name. L-Edit will complain if this dialog is not filled in with a full path to the TDB file.
7. Technology Reference drop box
   1. TDB
   2. from the lower droplist, choose one of the paths containing ledit.tdb... this will most likely be something like "Z:\usr\local\tanner\tannereda\tools\ledit.tdb" on Linux or "C:\Program Files\Tanner EDA\Tools\ledit.tdb" on Windows.
8. Click OK

Unlike when freshly starting L-Edit, users will not get a new cell in which to draw (this would appear to be a bug in L-Edit). Users can instantiate a new cell by either:

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In both cases, the cell name will default to Cell1 and not Cell0. But, users can simply choose to name the new cell Cell0 if so desired.

Instantiating a Cell from an External Library

CNF Libraries are located in /usr/local/cnf/ledit (KoratLinux) .

Unlike the Windows v15 version of LEdit, the window for instantiating a new cell does not allow you to select a library file. The dropdown only allows selection of existing libraries. 

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1. Click the column in the first blank row under "Path". That will highlight that cell.
2. Click the 3 dots to the right of the cell.
3. That opens the "Choose File" window.
4. Browse to the .tdb file containing your library of cells. – CNF cells are in /usr/local/cnf/ledit
5. Click OK
6. Click OK again
7. The new Library will now show in the "Libraries" window. And highlighting that library will show cells contained in that library. The library and its cells will now be listed in the dialogue window for instantiating new cells.
8. To make an instance of a cell, right-click on the cell name in the middle pane of the "Libraries" window and pick Instance.

Viewing Multiple Cells Simultaneously

This is a preference item you can set.

Setup → Application

For "When opening a view of a cell" select "Open a new window" instead of the default "Reuse the active window".