ModelSim and filename length limit

[Altera_Forum]

Hi, 

 I'm currently trying to simulate the Hard memory controller example, and the files in "vhdl/submodules" are very long. For some reason modelsim fails to read any of the files with filenames greater than 83 characters !?? I'm running Quartus/modelsim under Windows XP 64 bit, a work colleague has Windows 7 64 bit, and modelsim has no problems reading the same files !  Any help would be much appreciated  Thanks  Lee

[Altera_Forum]

put your project into a subfolder directly over a HDD for example D:\ms

[Altera_Forum]

--- Quote Start ---  put your project into a subfolder directly over a HDD for example D:\ms\  --- Quote End ---    Hi, just tried that, still the same.  Lee

[Altera_Forum]

Transcript is :- 

 # -- Loading package STANDARD # -- Loading package TEXTIO # -- Loading package std_logic_1164 # -- Compiling entity ddr_uniphy_hc_example_sim_e0_if0_id_router # -- Compiling architecture RTL of ddr_uniphy_hc_example_sim_e0_if0_id_router # Model Technology ModelSim ALTERA vcom 10.1d Compiler 2012.11 Nov 2 2012 # -- Loading package STANDARD # -- Loading package TEXTIO # -- Loading package std_logic_1164 # -- Compiling entity ddr_uniphy_hc_example_sim_e0_if0_addr_router # -- Compiling architecture RTL of ddr_uniphy_hc_example_sim_e0_if0_addr_router # Model Technology ModelSim ALTERA vcom 10.1d Compiler 2012.11 Nov 2 2012 # ** Error: (vcom-7) Failed to open design unit file "./..//submodules/ddr_uniphy_hc_example_sim_e0_if0_c0_csr_translator_avalon_universal_slave_0_agent_rdata_fifo.vho" in read mode. #  # No such file or directory. (errno = ENOENT) # ** Error: C:/altera/13.0/modelsim_ase/win32aloem/vcom failed. # Error in macro ./run.do line 11 # C:/altera/13.0/modelsim_ase/win32aloem/vcom failed. # while executing # "vcom "$QSYS_SIMDIR/submodules/ddr_uniphy_hc_example_sim_e0_if0_c0_csr_translator_avalon_universal_slave_0_agent_rdata_fifo.vho" " # ("eval" body line 42) # invoked from within # "com" # invoked from within # "if {[file exists msim_setup.tcl]} { # source msim_setup.tcl # dev_com # com # # the "elab_debug" macro avoids optimizations which preserves signals so tha..."

[Altera_Forum]

If I shorten "ddr_uniphy_hc_example_sim_e0_if0_c0_csr_translator _avalon_universal_slave_0_agent_rdata_fifo.vho" to "ddr_uniphy_hc_example_sim_e0_if0_c0_csr_translator _avalon_universal_slave_0_agent_r.vho" (83 characters) it finds it !

[Altera_Forum]

Windows XP has a limit on the total pathname length of 250 chars, not on the filename length. The pathname includes the starting "C:\" and null and the end of the path.

[Altera_Forum]

--- Quote Start ---  Windows XP has a limit on the total pathname length of 250 chars, not on the filename length. The pathname includes the starting "C:\" and null and the end of the path.  --- Quote End ---    Thanks to both you (dave_59) and Taz1984, I forgot to rename the vho file back to its original name, after doing this all files are now found if I move the sim project to say c:\ms\ to minimise total pathname length :-)  Many Thanks  Lee

[Altera_Forum]

See this Thread:- 

 alteraforum.com/forum/showthread.php?t=37564

[Altera_Forum]

Thanks, made interesting reading, same problem I had, I also can't believe the filenames have to be so long either !

[Altera_Forum]

Yep, not only did they leave their brains at home on the day that they created those long filenames but there was an astonishing lack of testing.