The conversion from decimal to binary occurs in the library that interprets input (from a ASCII encoded file or the user at the console). The x87 does not handle BCD at all. At this point forward, the number is represented internally by 80 consequetive bits in IEEE form. That is, sign bit, followed by 63 bits of mantissa and 16 bits of signed exponent. These are not BCD coded because they are not in base 10 anymore.
Furthermore, it would be foolish to store the number if BCD because of the inordinate amount of {stack, register, cache} space wasted, plus it helps to handle International number representation at the OS level (i.e. the French switch the comma and decimal point, group differently, etc.) thus freeing the application code from needing to worry about it.
An adaptation of this should be part of some "P2P" boilerplate FAQ that gets posted at the top of every such article with "READ THIS FIRST" in big letters.
In fact, your analogy is pretty bad, because 19" monitor at 1600x1200 with 16.7 million colors is not resolute enough and lacks the color depth of human vision. You can STILL see individual pixels, and 8 bits is not enough order of magnitude for each channel (the eye can perceive a 1:1000 contrast _difference_, so 10 bits [11 for green] for each component would be the minimum)
Nothing fancy about this card... other than the true 24-bit/48 kHz sampling rate and digital I/O support if you need it. It's about $100 depending on where you get it, but it makes up for the extra price with lots of connectivity and crisp, pure sound (crazy THD, it's in the manual somewhere)
I have a ESS Maestro 2E (Actually a canyon3d chip) and the linux drivers allow you to open the/dev/dsp device 4 times with hardware mixing supports (hint, add the module option dsp_order=2). It's quite nice.
Very wicked, but you had to a) know the type of system and b) the viewer the person was using. This sort of technique, using data to act as code is clever and quite real. In fact, there is nothing different between this and those URL hacks for IIS; data appears where it wouldn't normally be expected and it can be leverage into code space and executed.
However, in the case of JPEG, considering its block oriented format it would be quite difficult to engineer a buffer overflow condition.
You can still use virtual hosts on servers. That is not required by HTTP 1.0 (it is by 1.1) but all your popular browsers since 5 years ago give the information anyway.
But if they choose to use Gecko to render HTML for a HUD, or use RTLinux as a platform for some embedded device, they should be all worried because we're going to get to see how the rest of the system works?
News flash, we wouldn't even know about it to begin with. And if it were my software and I knew they were using it, I wouldn't care enough to pay a lawyer to push that issue. They're not making money off me, just safely landing planes.;)
And how would knowing that RTLinux is used for some control system help make it somehow less secure? If I knew that they were running Solaris I could find hacks to blow that door open. If they felt comfortable with choosing GPL over propietary code somewhere, they obviously had a good reason. If they never intended to distribute the product, then they can keep secret any changes they made to make it hardened from evildoers and such. Where's the problem? At least they could make the changes to begin with. GPL doesn't restrict that.
Hmmm... no. If it's a tiny little bit, then after looking at how BillyBob did it in his GPL'd proggy, you figure out how to WRITE IT YOUR-FUCKING-SELF.
People are so goddamned lazy.
Oh and there's the alternative. "Hey BillyBob, we'll give you $5000 dollars if you release the code to us under an unrestricted license." My personal favorite.
If the security of the system is then pendant upon whether or not the OS (or the application in question) is open or closed source, this distinction becomes irrelevant. Consider that the required ability to access the system to compromise said components cannot be any less difficult either way. At this point, anything is possible. While you might believe a closed source component is more difficult to compromise, amazing things can be done with disassemblers and knowledge of APIs (I've had to do it myself). Furthermore, the mere fact that it is closed source makes it even more enticing to hack, in the sense that there would be less reason to suspect something is wrong! The false sense of security it lends makes it a more valuable target, and thus spend time analyzing.
Think about it another way, does the open or closed source nature of software affect in any way the distribution or propogation of viruses?
Let's just ignore the fact that in EVERY version of Netscape Communicator, Quit meant close every Netscape-related window. The only difference is that in 4.X, if you did "Quit" because you launched Composer by accident, it would ask you "Do you really want to close all windows and exit Netscape?" As a Netscape user I learned pretty quickly to use CTRL+W instead of the file menu to close things, to avoid that.
Maybe they should just bring that back with an option to turn it off. Hell, there's probably a user.prefs thingie to turn it _on_.
Turtle Beach Santa Cruz and... Hercules Fortissimo II
Good, solid gaming cards based on the excellent CS4236 chipset. If you want an audio card that rocks harder be willing to spend money on something like an Envy24 based chipset (like the Midiman Dio 66). They are the highest fidelity imaginable, but they lack gaming features. If you need gaming on top of ultra-connectivity, the Terratec DMX line was a popular choice but they've got WDM driver model issues.
I hate to say but at least 85% of the people here are viewing this site from Windows. More of us have XWindows-based boxen to play with that the readers of other sites but we don't usaully consider buying expensive (consumer) graphics cards for them because no one will make any games for them to begin with. So I for one, knowing this chipset was brand new, did not expect it.
Your IT dept. isn't outsourced, is it. When we leave stuff like that up to them, they tend to just reimage the box, thereby destroying all your documents without even checking first.
You can imagine that none of my Windows boxen are under "maintenance". Brutes.
It's also amusing to call the networking group and when they start asking questions like "which OS?", I say "linux", and you can immediately see the sweat on their forehead through the phone.
Using an open source application in a Classified project does not make the program Classified. It makes the "method of usage" Classified. Or, if the participants in that project decided to modify the source for use in a Classified application, they would not be bound to release these changes unless the Open Source Application was under the GPL or a similar license. Or they could just not tell anyone and no one would know anyway, with the changes being released at a later date when the material becomes declassified.
Well, it IS 3d, technically, being a height map. You have two values associated with two parameters (frequency and time), so a 3 dimensional plot is not what you need (thats one value with 3 paramters). You just need interleaved rows, or pretend that the imaginary parts are all zero, which turns out to sound okay.
No... what he had was a parametric plot versus time where the Y-axis is the left-speaker voltage and the X-axis is the right-speaker voltage (or vice versa, just rotate 90 degrees). So if you have two in-phase tones at the same frequency, you get a circle. Anything else, and you get tons of cool rotoscopish type effects.
if you did what I did and fed them a bunch of bogus information about yourself. In fact, I think I listed my neighbors' phone number and adderss (with a different zip code).
Slashdot Mirror
The conversion from decimal to binary occurs in the library that interprets input (from a ASCII encoded file or the user at the console). The x87 does not handle BCD at all.
At this point forward, the number is represented internally by 80 consequetive bits in IEEE form. That is, sign bit, followed by 63 bits of mantissa and 16 bits of signed exponent. These are not BCD coded because they are not in base 10 anymore.
Furthermore, it would be foolish to store the number if BCD because of the inordinate amount of {stack, register, cache} space wasted, plus it helps to handle International number representation at the OS level (i.e. the French switch the comma and decimal point, group differently, etc.) thus freeing the application code from needing to worry about it.
An adaptation of this should be part of some "P2P" boilerplate FAQ that gets posted at the top of every such article with "READ THIS FIRST" in big letters.
Wait a minute... wait a minute... let me think:
THEN THEY SHOULDN'T BE USING A FUCKING HTTP SERVER!
Like, duh! (hint hint, https)
In fact, your analogy is pretty bad, because 19" monitor at 1600x1200 with 16.7 million colors is not resolute enough and lacks the color depth of human vision. You can STILL see individual pixels, and 8 bits is not enough order of magnitude for each channel (the eye can perceive a 1:1000 contrast _difference_, so 10 bits [11 for green] for each component would be the minimum)
The Midiman Delta Dio 2448:
Buy it here, perhaps
Nothing fancy about this card... other than the true 24-bit/48 kHz sampling rate and digital I/O support if you need it. It's about $100 depending on where you get it, but it makes up for the extra price with lots of connectivity and crisp, pure sound (crazy THD, it's in the manual somewhere)
I have a ESS Maestro 2E (Actually a canyon3d chip) and the linux drivers allow you to open the /dev/dsp device 4 times with hardware mixing supports (hint, add the module option dsp_order=2). It's quite nice.
What was their pitch?
I'm interested.
Do any of you remember the double free zlib bug?
Very wicked, but you had to a) know the type of system and b) the viewer the person was using. This sort of technique, using data to act as code is clever and quite real. In fact, there is nothing different between this and those URL hacks for IIS; data appears where it wouldn't normally be expected and it can be leverage into code space and executed.
However, in the case of JPEG, considering its block oriented format it would be quite difficult to engineer a buffer overflow condition.
You can still use virtual hosts on servers. That is not required by HTTP 1.0 (it is by 1.1) but all your popular browsers since 5 years ago give the information anyway.
But if they choose to use Gecko to render HTML for a HUD, or use RTLinux as a platform for some embedded device, they should be all worried because we're going to get to see how the rest of the system works?
;)
News flash, we wouldn't even know about it to begin with. And if it were my software and I knew they were using it, I wouldn't care enough to pay a lawyer to push that issue. They're not making money off me, just safely landing planes.
And how would knowing that RTLinux is used for some control system help make it somehow less secure? If I knew that they were running Solaris I could find hacks to blow that door open. If they felt comfortable with choosing GPL over propietary code somewhere, they obviously had a good reason. If they never intended to distribute the product, then they can keep secret any changes they made to make it hardened from evildoers and such. Where's the problem? At least they could make the changes to begin with. GPL doesn't restrict that.
Hmmm... no. If it's a tiny little bit, then after looking at how BillyBob did it in his GPL'd proggy, you figure out how to WRITE IT YOUR-FUCKING-SELF.
People are so goddamned lazy.
Oh and there's the alternative. "Hey BillyBob, we'll give you $5000 dollars if you release the code to us under an unrestricted license."
My personal favorite.
Its two seperate two-way motherboards in a single 1U. It even has two seperate power switches and power supplies in the back.
Heh. I was fooled the first time I saw that too.
If the security of the system is then pendant upon whether or not the OS (or the application in question) is open or closed source, this distinction becomes irrelevant. Consider that the required ability to access the system to compromise said components cannot be any less difficult either way. At this point, anything is possible. While you might believe a closed source component is more difficult to compromise, amazing things can be done with disassemblers and knowledge of APIs (I've had to do it myself). Furthermore, the mere fact that it is closed source makes it even more enticing to hack, in the sense that there would be less reason to suspect something is wrong! The false sense of security it lends makes it a more valuable target, and thus spend time analyzing.
Think about it another way, does the open or closed source nature of software affect in any way the distribution or propogation of viruses?
Mozilla is basically an OS running on top of an OS /me ducks
  At least it's smaller than EMACS...
Let's just ignore the fact that in EVERY version of Netscape Communicator, Quit meant close every Netscape-related window. The only difference is that in 4.X, if you did "Quit" because you launched Composer by accident, it would ask you "Do you really want to close all windows and exit Netscape?" As a Netscape user I learned pretty quickly to use CTRL+W instead of the file menu to close things, to avoid that.
Maybe they should just bring that back with an option to turn it off. Hell, there's probably a user.prefs thingie to turn it _on_.
I'm going to have to remember that term. That's an excellent way to describe our funky date style.
Turtle Beach Santa Cruz and...
Hercules Fortissimo II
Good, solid gaming cards based on the excellent CS4236 chipset.
If you want an audio card that rocks harder be willing to spend money on something like an Envy24 based chipset (like the Midiman Dio 66). They are the highest fidelity imaginable, but they lack gaming features. If you need gaming on top of ultra-connectivity, the Terratec DMX line was a popular choice but they've got WDM driver model issues.
I hate to say but at least 85% of the people here are viewing this site from Windows. More of us have XWindows-based boxen to play with that the readers of other sites but we don't usaully consider buying expensive (consumer) graphics cards for them because no one will make any games for them to begin with. So I for one, knowing this chipset was brand new, did not expect it.
Your IT dept. isn't outsourced, is it. When we leave stuff like that up to them, they tend to just reimage the box, thereby destroying all your documents without even checking first.
You can imagine that none of my Windows boxen are under "maintenance". Brutes.
It's also amusing to call the networking group and when they start asking questions like "which OS?", I say "linux", and you can immediately see the sweat on their forehead through the phone.
Using an open source application in a Classified project does not make the program Classified. It makes the "method of usage" Classified. Or, if the participants in that project decided to modify the source for use in a Classified application, they would not be bound to release these changes unless the Open Source Application was under the GPL or a similar license. Or they could just not tell anyone and no one would know anyway, with the changes being released at a later date when the material becomes declassified.
Well, it IS 3d, technically, being a height map. You have two values associated with two parameters (frequency and time), so a 3 dimensional plot is not what you need (thats one value with 3 paramters). You just need interleaved rows, or pretend that the imaginary parts are all zero, which turns out to sound okay.
No... what he had was a parametric plot versus time where the Y-axis is the left-speaker voltage and the X-axis is the right-speaker voltage (or vice versa, just rotate 90 degrees). So if you have two in-phase tones at the same frequency, you get a circle. Anything else, and you get tons of cool rotoscopish type effects.
J. Harrison, where can I download your plugin?\
if you did what I did and fed them a bunch of bogus information about yourself. In fact, I think I listed my neighbors' phone number and adderss (with a different zip code).
Uh oh.
What company do (did) you work for? Oak Hill VA is where my crib is @
LOL
ohhhh man...just put it all the waste inside a vessel that looks just like a small version of the building, and, well, you know what I mean.