V
Valentin Tihomirov
constant BIT_TIME: time := 1/9600 sec;
???
???
J
Jim Lewis
In your example, sec is associated with
9600, so you actually wrote 1/time which
will not work.
Try this:
constant BIT_TIME: time := (1/9600) * 1 sec;
You may not need the parentheses, but it is more
readable with them.
Cheers,
jim
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Lewis
Director of Training mailto:[email protected]
SynthWorks Design Inc. http://www.SynthWorks.com
1-503-590-4787
Expert VHDL Training for Hardware Design and Verification
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9600, so you actually wrote 1/time which
will not work.
Try this:
constant BIT_TIME: time := (1/9600) * 1 sec;
You may not need the parentheses, but it is more
readable with them.
Cheers,
jim
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Lewis
Director of Training mailto:[email protected]
SynthWorks Design Inc. http://www.SynthWorks.com
1-503-590-4787
Expert VHDL Training for Hardware Design and Verification
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
J
Jonathan Bromley
YES! SUCCESS! I caught Jim Lewis out!!!
Bad plan. 1/9600 is evaluated as an integer, yielding
the value 0.
How about
constant BIT_TIME: time := 1 sec / 9600;
This will work because 1 sec == 10^15 fs, and arithmetic
on physical units is always scaled to the base unit,
which is fs in the case of time.
That comes close to paying you back for catching me
out with a cunning type conversion at your tutorial
in Lyon
--
Jonathan Bromley, Consultant
DOULOS - Developing Design Know-how
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Doulos Ltd. Church Hatch, 22 Market Place, Ringwood, Hampshire, BH24 1AW, UK
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The contents of this message may contain personal views which
are not the views of Doulos Ltd., unless specifically stated.
Bad plan. 1/9600 is evaluated as an integer, yielding
the value 0.
How about
constant BIT_TIME: time := 1 sec / 9600;
This will work because 1 sec == 10^15 fs, and arithmetic
on physical units is always scaled to the base unit,
which is fs in the case of time.
That comes close to paying you back for catching me
out with a cunning type conversion at your tutorial
in Lyon
--
Jonathan Bromley, Consultant
DOULOS - Developing Design Know-how
VHDL * Verilog * SystemC * Perl * Tcl/Tk * Verification * Project Services
Doulos Ltd. Church Hatch, 22 Market Place, Ringwood, Hampshire, BH24 1AW, UK
Tel: +44 (0)1425 471223 mail: (e-mail address removed)
Fax: +44 (0)1425 471573 Web: http://www.doulos.com
The contents of this message may contain personal views which
are not the views of Doulos Ltd., unless specifically stated.
J
Jim Lewis
How about
Good point.
Serves me right for typing without thinking.
You have a long memory. I will have to remember not
to what I did at FDL again - if only I could remember
what it was.
Cheers,
Jim
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Lewis
Director of Training mailto:[email protected]
SynthWorks Design Inc. http://www.SynthWorks.com
1-503-590-4787
Expert VHDL Training for Hardware Design and Verification
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Good point.
Serves me right for typing without thinking.
That comes close to paying you back for catching me
out with a cunning type conversion at your tutorial
in Lyon
You have a long memory. I will have to remember not
to what I did at FDL again - if only I could remember
what it was.
Cheers,
Jim
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Lewis
Director of Training mailto:[email protected]
SynthWorks Design Inc. http://www.SynthWorks.com
1-503-590-4787
Expert VHDL Training for Hardware Design and Verification
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~