Abstract: A method includes receiving a device layout file in a computing apparatus defining a plurality of device structures in a semiconductor device. A foundry truth table designating valid device structures for a fabrication process is received in the computing apparatus. Device structures in the device layout file are designated as supported device structures by comparing the device structures in the device layout file to the valid device structures in the foundry truth table using the computing apparatus. Device structures in the device layout file that do not correspond to valid device structures for the fabrication process are designated as unsupported devices using the computing apparatus. A list of the unsupported device structures is generated using the computing apparatus.

Abstract: Apparatus for feeding fibrous material to a carding machine including a rotatable roll having an exterior cylindrical surface which with first and second surfaces in opposing relationship thereto defines a curved trough converging from an entrance end portion thereof in a direction of travel of the fibrous material through the trough, a tear-off point upstream of an exit end portion of the trough, the radius of curvature of the first and second surface being identical and corresponding to the radius of the first surface, and an imaginary straight line through the tear-off point being in tangential relationship to the second surface and the cylindrical surface.