| Author |
Message |
Colonel Forbin
Guest
|
 Posted:
Thu Aug 04, 2005 10:36 pm Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
In article <1123083169.157351.48940@o13g2000cwo.googlegroups.com>,
kmaryan@gmail.com <kmaryan@gmail.com> wrote:
| Quote: |
Keep in mind that much "reverse engineering" is however done by way of
functional specifications. It's often not necessary to compltely look
at all the details of a circuit (or any other system) to be able to
duplicate it. Consider something simple like a CMOS NOT gate:
...
|
And thus was begat Linux... |
|
| Back to top |
|
 |
Jim Thompson
Guest
|
| Posted:
Thu Aug 04, 2005 10:40 pm Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
On Thu, 04 Aug 2005 17:33:41 GMT, forbin@dev.nul (Colonel Forbin)
wrote:
| Quote: | In article <dcpn83$5d5$1@news4.zwoll1.ov.home.nl>,
Skybuck Flying <nospam@hotmail.com> wrote:
One question:
Is that legal ? :)
It's probably legal how can otherwise a company like that exist ?
Legality and opportunity are not equivalent. There are lots of firms,
often located in nations with weak enforcement, who make millions on
copyright/patent infringement.
[snip] |
Anything for a buck....
http://www.semiconductor.com/index.asp?c=4370
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food. |
|
| Back to top |
|
|
Joel Kolstad
Guest
|
| Posted:
Fri Aug 05, 2005 12:15 am Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
"glen herrmannsfeldt" <gah@ugcs.caltech.edu> wrote in message
news:o56dnUtLmZ1eFm_fRVn-jg@comcast.com...
| Quote: | There is a story that when the russians started making ICs
someone decided that 2.5mm is close to 0.1in, so their DIPs
have the pins spaced 2.5mm apart. Maybe close enough for
one pin spacing, but it is cumulative and the result is that
they don't fit in the socket.
|
I can't tell you how many beginners I've seen build footprints for DB-style
connectors and figure that .1" is close enough (and on their grid) to the true
..109" spacing that they'd just go with it... :-) (And with enough of a
ham-firsted approach, even a DB-25 can be made to fit in .1"-spaced holes!) |
|
| Back to top |
|
|
Pooh Bear
Guest
|
| Posted:
Fri Aug 05, 2005 12:15 am Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
Joel Kolstad wrote:
| Quote: | "glen herrmannsfeldt" <gah@ugcs.caltech.edu> wrote in message
news:o56dnUtLmZ1eFm_fRVn-jg@comcast.com...
There is a story that when the russians started making ICs
someone decided that 2.5mm is close to 0.1in, so their DIPs
have the pins spaced 2.5mm apart. Maybe close enough for
one pin spacing, but it is cumulative and the result is that
they don't fit in the socket.
I can't tell you how many beginners I've seen build footprints for DB-style
connectors and figure that .1" is close enough (and on their grid) to the true
.109" spacing that they'd just go with it... :-) (And with enough of a
ham-firsted approach, even a DB-25 can be made to fit in .1"-spaced holes!)
|
Wonderful isn't it ?
Seen the same thing with 0.156" pitch connectors spaced at 0.15". It's ugly !
Graham |
|
| Back to top |
|
|
glen herrmannsfeldt
Guest
|
| Posted:
Fri Aug 05, 2005 12:15 am Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
Colonel Forbin wrote:
(snip)
| Quote: | Legality and opportunity are not equivalent. There are lots of firms,
often located in nations with weak enforcement, who make millions on
copyright/patent infringement.
In the former Soviet Union, trade embargoes on computer technology
often led to reverse engineering sponsored by the government with
large capital investment.
|
There is a story that when the russians started making ICs
someone decided that 2.5mm is close to 0.1in, so their DIPs
have the pins spaced 2.5mm apart. Maybe close enough for
one pin spacing, but it is cumulative and the result is that
they don't fit in the socket.
-- glen |
|
| Back to top |
|
|
Mike
Guest
|
| Posted:
Fri Aug 05, 2005 8:15 am Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
"Skybuck Flying" <nospam@hotmail.com> wrote in message
news:dcpn83$5d5$1@news4.zwoll1.ov.home.nl...
| Quote: |
"Mike" <mike@nospam.com> wrote in message
news:iTYHe.27776$HV1.11355@fed1read07...
"Skybuck Flying" <nospam@hotmail.com> wrote in message
news:dcpefs$gs3$1@news5.zwoll1.ov.home.nl...
Is it common for IC's to be reversed engineered ?
You betcha. http://www.chipworks.com/
One question:
Is that legal ? :)
|
Yes.
| Quote: | Those smiling japanese faces at the end of the document are funnnnny.
|
There's not much funny about racism.
-- Mike -- |
|
| Back to top |
|
|
Nick Maclaren
Guest
|
| Posted:
Fri Aug 05, 2005 1:25 pm Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
In article <11f58u0p0pvdv37@corp.supernews.com>,
Joel Kolstad <JKolstad71HatesSpam@yahoo.com> wrote:
| Quote: |
I can't tell you how many beginners I've seen build footprints for DB-style
connectors and figure that .1" is close enough (and on their grid) to the true
.109" spacing that they'd just go with it... :-) (And with enough of a
ham-firsted approach, even a DB-25 can be made to fit in .1"-spaced holes!)
|
Standard field engineering. "Don't bend the tool - get a bigger
hammer."
Regards,
Nick Maclaren. |
|
| Back to top |
|
|
Skybuck Flying
Guest
|
| Posted:
Sun Aug 07, 2005 8:15 am Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
"Mike" <mike@nospam.com> wrote in message
news:P1CIe.28315$HV1.16719@fed1read07...
| Quote: |
"Skybuck Flying" <nospam@hotmail.com> wrote in message
news:dcpn83$5d5$1@news4.zwoll1.ov.home.nl...
"Mike" <mike@nospam.com> wrote in message
news:iTYHe.27776$HV1.11355@fed1read07...
"Skybuck Flying" <nospam@hotmail.com> wrote in message
news:dcpefs$gs3$1@news5.zwoll1.ov.home.nl...
Is it common for IC's to be reversed engineered ?
You betcha. http://www.chipworks.com/
One question:
Is that legal ? :)
Yes.
Those smiling japanese faces at the end of the document are funnnnny.
There's not much funny about racism.
|
Exactly racism is about hate ;)
Bye,
Skybuck. |
|
| Back to top |
|
|
Richard Tobin
Guest
|
| Posted:
Wed Aug 10, 2005 4:15 pm Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
In article <dcpn83$5d5$1@news4.zwoll1.ov.home.nl>,
Skybuck Flying <nospam@hotmail.com> wrote:
| Quote: | For example when installing microsoft windows it has a license which must be
agreed to,
it says stuff like:
"You may not reverse engineer, decompile, etc"
|
Just because a licence says something doesn't mean it has any legal
force. In the specific case of reverse engineering, many countries
have laws specifically allowing it for certain purposes (e.g. to create
interoperable products).
-- Richard |
|
| Back to top |
|
|
Ben Bradley
Guest
|
| Posted:
Thu Aug 11, 2005 8:15 am Post subject:
Re: Is it common to re-verse engineer an integrated circuit |
|
|
In comp.arch,sci.electronics.design, On Wed, 3 Aug 2005 08:14:03
+0200, "Skybuck Flying" <nospam@hotmail.com> wrote:
| Quote: |
"Mike" <mike@nospam.com> wrote in message
news:iTYHe.27776$HV1.11355@fed1read07...
"Skybuck Flying" <nospam@hotmail.com> wrote in message
news:dcpefs$gs3$1@news5.zwoll1.ov.home.nl...
Hi,
Just a stupid little question.
...
Is it common for IC's to be reversed engineered ?
You betcha. http://www.chipworks.com/
One question:
Is that legal ? :)
|
I dunno, I suspect this one to be a copyright violation:
http://www.chipworks.com/gallery/Z-Waldo.asp
Did they really have the rights to reproduce an image of Waldo? I
wonder how many copies they made? If they get sued and have to pay a
per-copy royalty or penalty, it could get expensive...
-----
http://www.mindspring.com/~benbradley |
|
| Back to top |
|
|
|
|
|
|
FAQ
Memberlist
Register
Profile
Log in to check your private messages
Log in