| Author |
Message |
ALuPin
Guest
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 Posted:
Tue Jan 04, 2005 9:08 pm Post subject:
Procedure exit on global signal |
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Hi newsgroup users,
I am trying to implement the following in my VHDL testbench:
Within a process (without sensitivity list) I call a procedure "wait_delay".
In the most test cases the signal 't_order_burst_data' gets high when
the procedure is left again.
But there are also some cases where it gets high while the loop
in the procedure is busy. I want the procedure to abort then.
But how can I make the signal 't_order_burst_data' visible for the procedure
all the time ?
I would be very thankful for any suggestions.
procedure wait_delay ( signal clock : std_logic;
signal order_burst_data_in : std_logic) is
variable i : natural;
begin
for i in 0 to 4 loop
exit when order_burst_data_in='1';
wait until rising_edge(clock);
end loop;
end wait_delay;
....
process
begin
wait until rising_edge(t_clk);
for m in 0 to 10 loop
wait until rising_edge(t_clk);
wait until t_order_burst_data='1';
wait_delay(t_clk,
t_order_burst_data);
end loop;
t_continue <= '1';
wait;
end process; |
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Duane Clark
Guest
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| Posted:
Tue Jan 04, 2005 9:53 pm Post subject:
Re: Procedure exit on global signal |
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ALuPin wrote:
| Quote: | Hi newsgroup users,
I am trying to implement the following in my VHDL testbench:
Within a process (without sensitivity list) I call a procedure "wait_delay".
In the most test cases the signal 't_order_burst_data' gets high when
the procedure is left again.
But there are also some cases where it gets high while the loop
in the procedure is busy. I want the procedure to abort then.
But how can I make the signal 't_order_burst_data' visible for the procedure
all the time ?
I would be very thankful for any suggestions.
procedure wait_delay ( signal clock : std_logic;
signal order_burst_data_in : std_logic) is
variable i : natural;
begin
for i in 0 to 4 loop
exit when order_burst_data_in='1';
wait until rising_edge(clock);
end loop;
end wait_delay;
|
Have you tried:
wait until rising_edge(clock) or order_burst_data_in='1';
--
My real email is akamail.com@dclark (or something like that). |
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nospam
Guest
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| Posted:
Tue Jan 04, 2005 10:33 pm Post subject:
Re: Procedure exit on global signal |
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ALuPin@web.de (ALuPin) wrote:
| Quote: | Hi newsgroup users,
|
<description of his problem>
| Quote: | I would be very thankful for any suggestions.
|
Another post from a truly prolific information leech bought to you by
Google. |
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Jim Lewis
Guest
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| Posted:
Wed Jan 05, 2005 2:30 am Post subject:
Re: Procedure exit on global signal |
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nospam,
| Quote: | Another post from a truly prolific information leech bought to you by
Google.
Prolific. Perhaps. |
A leech? I don't agree with this. I don't consider those
who post their code and sometimes their simulation results
when they ask a question to be leech.
Of course you are entitled to your own opinion and can
always create a filter to remove the person from your
viewing consideration.
If you consider the exact issue in this case. The
solution required the full use of the wait statement
(Jonathan Bromley's second solution):
for i in 0 to 4 loop
wait until (order_burst_data = '1') or rising_edge(clock);
exit when order_burst_data_in='1';
end loop;
I think the author (AluPin) put enough consideration and
the solution was difficult enough that I feel your
comment is unjustified.
Regards,
Jim Lewis
P.S.
It would be polite and civil if both of you would
put a by-line with your real name.
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Lewis
Director of Training mailto:Jim@SynthWorks.com
SynthWorks Design Inc. http://www.SynthWorks.com
1-503-590-4787
Expert VHDL Training for Hardware Design and Verification
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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Mike Treseler
Guest
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| Posted:
Wed Jan 05, 2005 3:47 am Post subject:
Re: Procedure exit on global signal |
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I'm glad that Google now has free web-based
newsgroup service with reasonably quick posting.
At work, I no longer have access to a real news server.
As for the original posting, it was a good,
on-topic question that provoked an illuminating
posting from Mr Bromley. This group is hardly overloaded
with questions in any case.
-- Mike Treseler |
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nospam
Guest
|
| Posted:
Wed Jan 05, 2005 6:21 am Post subject:
Re: Procedure exit on global signal |
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Jim Lewis <Jim@SynthWorks.com> wrote:
| Quote: | nospam,
Another post from a truly prolific information leech bought to you by
Google.
Prolific. Perhaps.
A leech? I don't agree with this. I don't consider those
who post their code and sometimes their simulation results
when they ask a question to be leech.
|
If you care to check the OPs posting history on Google you will find 10
pages of posts. If you inspect them you will find perhaps two or three
posts to threads which the OP did not originate with a question.
These are the first line of each post in the first page
Hello, does someone know
Hi @ all, is it possible to
Some additional question:
3.what is the advantages and disadvantages of
Some additional thing: "Differential" is the wrong expression. I need
LIBRARY ieee; USE ieee.std_logic_1164.all; LIBRARY work;
Hi, is the following CAM-implementation synthezisable?
hi how do i detect a state change of a signal
Hi, I have a question
Hi everybody, How can I put
Notice a pattern?
Information leech seems an appropriate term for someone who asks but never
answers questions.
My recent observation is that it is an appropriate term for the majority of
people accessing technical groups via google.
Google users seem to regard usenet as a free consultancy service and as
long as there are enough suckers who bother to read and contribute to their
threads it will work for them.
| Quote: | Of course you are entitled to your own opinion and can
always create a filter to remove the person from your
viewing consideration.
|
I am currently kill filing the majority of Google posters, I wish it could
be automated. If you don't want to see usenet turn into a wasteland of
unanswered questions I suggest you do the same. |
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