Xilinx: How to save all invalid constraints to a file?

M

MM

Guest
I saw a console message today generated by either ISE or PlanAhead offering
me to run some command to save all invalid constraints to a file. I can't
find this information in any of the reports or user guides... Could someone
point me in the right direction please? And I am not asking why they
couldn't just generate the damn file instead of asking me to do so!


/Mikhail
 
"d_s_klein" <d_s_klein@yahoo.com> wrote in message
news:8bc41a80-0d1f-4416-9917-a1d624cb69cf@h37g2000pro.googlegroups.com...
What you are looking for may be in the process properties for
'Generate Post-Place & Route Static Timing' - the step just before
PlanAhead. (Why is PlanAhead the *last* step in the process? Make me
wonder.)
Click to expand...
No, I don't see an explicit option for that there... If I am looking in the
right place...

/Mikhail
 
On Oct 20, 2:29 pm, "MM" <mb...@yahoo.com> wrote:
I saw a console message today generated by either ISE or PlanAhead offering
me to run some command to save all invalid constraints to a file. I can't
find this information in any of the reports or user guides... Could someone
point me in the right direction please? And I am not asking why they
couldn't just generate the damn file instead of asking me to do so!

/Mikhail
Click to expand...
What you are looking for may be in the process properties for
'Generate Post-Place & Route Static Timing' - the step just before
PlanAhead. (Why is PlanAhead the *last* step in the process? Make me
wonder.)

RK
 
Apparently it was a message in the PlanAhead Tcl Console window and it looks
as follows:

INFO: [HD-Ucf 0] Invalid constraints found, use command
'write_ucf -constraints invalid <file>' to save all the invalid constraints
to a file


/Mikhail
 
So, if anyone is curious, this command is supposed to be typed in the
PlanAhead tcl console. It works quite nicely and generates a file with
invalid constraints from all the constraints files it considers to be
relevant. write_ucf -h produces some basic help information.

/Mikhail
 
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