This page documents the revisions made to the GBRUTIL. Please consult it to determine if you are running the current version and to see what fixes/enhancements have been made to the program.

The name of the Gerber Compare software was changed to Gerber Util. Other than the XOR operation (compare), GBRUTIL can also perform other boolean operations between two files like AND, OR.

The layer manager was fixed to supports Gerber files that contained over 60 internal layers of paint/scratch.

In some cases, a pop up window will stop the compare process because of mis communication between the GUI and engine. This has been fixed. This fix also improved the speed of the software.

A fix to the XOR engine.

In some cases, a pop up window will stop the compare process because of mis communication between the GUI and engine. This has been fixed. This fix also improved the speed of the software.

When one file, for example, had 3.5 format and another had 2.4, the program failed to finish completely. This has now been fixed..

Custom apertures are now always booleanized before checking file differences.

GBRUTIL had problems with filenames containing spaces and extra periods. It is now fully long filename compatible.

Better, more friendly summary view and reporting: Comparison results are now built right into the jobs list and a View Report button added.

Added multiple-job operations: remove selected, remove all, compare selected, and compare all

Under certain circumstances, the output Gerber file had extra binary data (garbage) after the end of the file (M02).

The XOR comparison engine has been updated to correct bugs reported since the last revision.

A number of unnecessary steps have been removed in the comparison process, resulting in improvements in comparison speed.

Fixes to the long file name support have been made after problems reported by end users traced to very long directory paths.

The progress bar now displays the number of jobs completed -- "job #/# on its title bar".

the "About" dialog now displays licensing information which can be helpful in debugging licensing problems.

If an input Gerber file was selected that was "empty" the program would go into an infinite loop attempting to read the data. This has been fixed.

This version modifies the user interface to allow for a group of files to be compared. In many cases, the designer needs to compare mutliple Gerber files (one per layer) for two designs. This version supports both identical file names (when located in different directories) and different file names.

Fixes a bug when the user specifies two different files that have the same file name but are located in different diretories. [reported by LSI Logic]

Fixes a bug in the output data when very large complex boundaries were encountered. Boundaries with greater than 4096 vertices were previously corrupted in the output. [reported by LSI Logic]

this enhances the call to GBRVU so that when viewing the XOR (difference) data with one of the input files: 1) input files are a single solid color, 2)XOR file is displayed last so it is not covered by the input file.

corrects an error that occured when comparing two polygons with very large vertex count - the resulting high count output polygon was clipped -- the new output formatter now correctly supports very high vertex count polygons. (Reported by LSI Logic)

this is the initial beta release. It does not include the ability to offset the coordinates of the two input files. You must install GBRVU/W version 2.63H (or later) first, in order to use GBRUTIL.