(errno = ENOENT) in modelsim verilog module

[kasettyram]

# ** Warning: (vsim-3534) [FOFIR] - Failed to open file "input.txt" for reading.
# No such file or directory. (errno = ENOENT) : C:/Documents and Settings/students/My Documents/compare.v(35)
# Time: 0 ns Iteration: 0 Instance: /fileio
# ** Warning: (vsim-3534) [FOFIR] - Failed to open file "output.txt" for reading.

i have included d file in current project work space and also tried opening input.txt by giving the entire path in fopen arguments but still i am unable to open input.txt and getting the above error please help me

 

[ckshivaram]

refer this link , it may be useful
http://www.actel.com/documents/modelsim_FAQ.pdf

 

[yx.yang]

# ** Warning: (vsim-3534) [FOFIR] - Failed to open file "input.txt" for reading.
# No such file or directory. (errno = ENOENT) : C:/Documents and Settings/students/My Documents/compare.v(35)
# Time: 0 ns Iteration: 0 Instance: /fileio
# ** Warning: (vsim-3534) [FOFIR] - Failed to open file "output.txt" for reading.

i have included d file in current project work space and also tried opening input.txt by giving the entire path in fopen arguments but still i am unable to open input.txt and getting the above error please help me

Hi, you need note that: the input.txt should put in the modelsim run-up directory, or when compile the RTL code, you need use some option to indicate modelsim where to find included files. Try to put the file under the modelsim run-up directory first.

 

[Maxwell077]

Check for your file extension is open or not...
You may write the file as input.txt, but OS understood it as input.txt.txt...
It's a common unwanted mistake... Create your file as "input"...