What is a .LMF file?
A .LMF file is a type of data file specifically used by a software program called Quartus II. Quartus II is a tool used by developers to work on and improve designs that are written in a hardware description language (HDL). These designs are often used in the development of digital circuits and systems.
The .LMF file contains important mapping information. It lists the names and input/output ports of certain logic functions that are part of Quartus II. It also details which cells, components, and modules from other files within the Quartus II environment these functions correspond to. This is particularly useful when a file is being opened or compiled in Quartus II, as it helps replace certain parts of the file with predefined logic functions. This replacement is crucial for enabling specific macrofunctions that are tailored to different families of hardware within the Quartus II software.
Although the primary software that opens .LMF files is Altera Quartus II, it's important to note that this software has been discontinued. Altera, the company that developed Quartus II, was acquired by Intel in 2015. Despite the discontinuation, the .LMF files can still be viewed and edited because they are ASCII text files. This means they are formatted in a simple text format that can be read by any standard text editor. The content in these files is organized as statements, which map various elements like cells from Verilog Quartus Mapping (VQM) files and EDIF Input (EDF) files, modules from Verilog Design (V) files, and components from VHDL Design (VHD) files to the logic functions in Quartus II.
In summary, .LMF files are crucial for mapping specific components and modules to logic functions in the Quartus II environment, facilitating the optimization and analysis of HDL designs. Although the primary software for these files has been discontinued, they can still be accessed using any basic text editor due to their ASCII text format.
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