>> FDO file

FDO file format description

Many people share .fdo files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .fdo file can be edited, converted or printed with. On this page, we try to provide assistance for handling .fdo files.

1 filename extension(s) found in our database.

.fdo - ModelSim Script

The FDO data files are related to ModelSim. FDO file is a ModelSim Script. ModelSim is a multi-language HDL simulation environment by Mentor Graphics, for simulation of hardware description languages such as VHDL, Verilog and SystemC, and includes a built-in C debugger.

Data files
- / -
ModelSim Script related extensions:
SystemVerilog File
SystemVerilog Include File
ModelSim Test Bench Waveform

Naturally, other applications may also use the .fdo file extension. Even harmful programs can create .fdo files. Be especially cautious with .fdo files coming from an unknown source!

Can't open a .fdo file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .fdo file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cdo, ddo, do, edo, fco, fd, fdi, fdk, fdl, fdp, ffo, fo, fod, fro, fso

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Oracle Database Redo Log
Xilinx Text Design Output
VDOLive Media
FlashDevelop Layout File
Gerber Data Object
Xerox Raster Document Object

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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If you have useful information about the .fdo file format, then write to us!

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