An update on this -- I think it has something to do with the
sel_a[0:7] net. When declared as:
wire [7:0] sel_a;
Then Xilinx is ok with it, but I get an assertion in icarus. When declared as:
wire sel_a [0:7];
then Xilinx flags an error, but Icarus gives a different assertion.
Matt
O
Got another one for you. I am now using the latest git version as of
this morning. I get the following assertion when trying to compile
the attached files. They are short, but I put them in a tarball. The
code shouldn't do anything useful yet, but I believe it is
syntactically correct. The co
Randall Nortman wrote:
> On Mon, Jun 18, 2007 at 10:46:31AM -0700, Steven Michalske wrote:
>> Putting a LC filter on the output of the bridge rectifier will help
>> you out.
>
> I looked briefly at LC filters to handle 120Hz ripple. Requires some
> pretty large, expensive inductors
I think he
On Jun 18, 2007, at 11:33 AM, Randall Nortman wrote:
> On Mon, Jun 18, 2007 at 10:46:31AM -0700, Steven Michalske wrote:
>> Putting a LC filter on the output of the bridge rectifier will help
>> you out.
>
> I looked briefly at LC filters to handle 120Hz ripple. Requires some
> pretty large, exp
> I looked briefly at LC filters to handle 120Hz ripple. Requires some
> pretty large, expensive inductors if I'm not mistaken. Seems cheaper
> in both board space and money to have more capacitance.
Are you trying to filter the 120Hz ripple, or just block the switcher
ripple? Using a small in
On Mon, Jun 18, 2007 at 10:46:31AM -0700, Steven Michalske wrote:
> Putting a LC filter on the output of the bridge rectifier will help
> you out.
I looked briefly at LC filters to handle 120Hz ripple. Requires some
pretty large, expensive inductors if I'm not mistaken. Seems cheaper
in both b
On 6/17/07, Stephen Williams <[EMAIL PROTECTED]> wrote:
>
> Your example below is within the skills of Icarus Verilog, but
> there was a very recent fix for exactly this problem. According to
> my git logs, it was committed 6/11/2007, which is *after* the very
> last snapshot. So try the current gi
Putting a LC filter on the output of the bridge rectifier will help
you out.
The ferrite bead to decouple the large caps, not sure if that would
help as much as the LC filter and some ceramics and maybe some
tantalums.
Be careful with over sizing switching power supplies, what is the
m
On Jun 18, 2007, at 11:12 AM, Randall Nortman wrote:
> I am
> over-designing the power supply to provide at least 1.5A at 70C. I
> will
> take an efficiency hit by over-designing that much, but I don't think
> I'd feel comfortable with less margin.
Maybe not. My experience with switchers is t
On Mon, Jun 18, 2007 at 10:48:52AM -0500, John Griessen wrote:
> Randall Nortman wrote:
> > On Sun, Jun 17, 2007 at 08:53:37PM -0400, Dan McMahill wrote:
> > [...]
> >> Personally I avoid aluminum electrolytics like the plague.
>
> > And I'm in the unfortunate situation of designing for 70C ambie
It's about time to praise whoever is responsible for the improved
autonumber dialog (remove existing numbers, globbing, autoslotting(!))
This constitutes a major improvement of geschem usage.
Thanks for coding!
---<(kaimartin)>---
--
Kai-Martin Knaak
Universitä
On Mon, 18 Jun 2007 10:05:40 -0400, John Luciani wrote:
> I believe there is --skip-m4 switch now. I am not sure when it was
> added.
This skips M4, but not the default newlib. Anyway, I can live with a
script that temporarily renames the library dirs. They won't be
permanenty removed, because
On Jun 18, 2007, at 9:48 AM, John Griessen wrote:
> Randall Nortman wrote:
>> On Sun, Jun 17, 2007 at 08:53:37PM -0400, Dan McMahill wrote:
>> [...]
>>> Personally I avoid aluminum electrolytics like the plague.
>
>> And I'm in the unfortunate situation of designing for 70C ambient,
>> natural ai
Randall Nortman wrote:
> On Sun, Jun 17, 2007 at 08:53:37PM -0400, Dan McMahill wrote:
> [...]
>> Personally I avoid aluminum electrolytics like the plague.
> And I'm in the unfortunate situation of designing for 70C ambient,
> natural air convection for cooling.
That temp means some expensive
On 6/18/07, Kai-Martin Knaak <[EMAIL PROTECTED]> wrote:
>
> I'd like gsch2pcb to completely ignore the standard footprint library.
> Instead, only our local collection of footprints should be used as they
> are checked to comply to the design rules of our local pcb fab.
>
> Last time I asked on thi
I'd like gsch2pcb to completely ignore the standard footprint library.
Instead, only our local collection of footprints should be used as they
are checked to comply to the design rules of our local pcb fab.
Last time I asked on this list, the only way was to manually move the
libs to some oth
I think the power supply pins in this standard library symbol are
reversed -- pin 11 is V+ and 4 is V-, and all the standard-footprint
quad opamps I've seen have it the other way. Fortunately, the pin
label attribute is not visible on the symbol, just the number, so the
designer is at least encour
That temp range looks like something you might seen in an automotive engine
control application, so you might look for suppliers who work in that
industry.
Dave
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Randall Nortman
Sent: Sunday, June 17, 2007
On Sunday 17 June 2007 20:53, Dan McMahill wrote:
> Or better yet, use ... For tantalums in
> switchers, it used to be the case that you should derate the voltage by
> 2x since you can get uneven voltage drops in the dielectric under
> transient conditions.
Tantalums should also be "Surged Ra
19 matches
Mail list logo
