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  • Hex Decompilers for PIC

    - by Chathuranga Chandrasekara
    I've faced to a problem with a PIC Micro controller. I have a micro-controller programmed by me long time ago and I lost the relevant source code and the schematic diagrams. Now I need to invert the value of a port. I can do this using some NOT gates but it is a big hassle to do so. or alternatively I will need to write the whole program back. I don't expect to see the code back in PIC C or MikroC. Having an understandable assembly code would be sufficient. So do anyone has any experience on a good HEX decompiler that I can use for this purpose? Any comments based on your experience? :)

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  • Portable way to determining of printer is physical or virtual

    - by Mud
    I need direct-to-printer functionality for my website, with the ability to distinguish a physical printer from a virtual printer (file). Coupons.com has this functionality via a native binary which must be installed by the user. I'd prefer to avoid that. SmartSource.com does it via Java applet: Does anybody know how this is done? I dug through that Java APIs a bit, and don't see anything that would let you determine physical vs virtual, except looking at the name (that seems prone to misidentification). It would be nice to be able to do it in Java, because I already know how to write Java applets. Failing that, is there a way to do this in Flash or Silverlight? Thanks in advance. EDIT: Well deserved bounty awarded to Jason Sperske who worked out an elegant solution. Thanks to those of you who shared ideas, as well as those who actually investigated SmartSource.com's solution (like Adrian).

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  • Mouse for programmer

    - by aku
    We have discussed keyboards. But take a look at the small piece of plastic to the right (or left :) ) of your beloved keyboard! This humble creature helps you to draw nice forms, and click all around the web. A real programmers mouse must be precise and comfortable, so which mouse would you make a companion to your keyboard? Currently I'm in love with this fat member of mice family: Natural wireless laser mouse 6000

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  • What's the coolest machine you've ever worked on?

    - by mxg
    What's the most exotic, coolest, unique, or interesting machine you've worked on? Most of us work on machines with x86 architectures using some Windows or Linux variant. I'm sure there are those of you out there who are working on or have worked on machines with experimental architecures, or operating systems. Maybe you worked on a machine that has some sigificance in the history of computing. I'd be interested to hear about it. I'm sure others reading SO will as well. EDIT: I appreciate all of you who took some time to talk about their experiences with interesting or unusual machines. I enjoyed reading your answers. Although it wasn't my intent to get nostalgic, I see that theme amongst the responses.

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  • Flushing writes in buffer of Memory Controller to DDR device

    - by Rohit
    At some point in my code, I need to push the writes in my code all the way to the DIMM or DDR device. My requirement is to ensure the write reaches the row,ban,column of the DDR device on the DIMM. I need to read what I've written to the main memory. I do not want caching to get me the value. Instead after writing I want to fetch this value from main memory(DIMM's). So far I've been using Intel's x86 instruction wbinvd(write back and invalidate cache). However this means the caches and TLB are flushed. Write-back requests go to the main memory. However, there is a reasonable amount of time this data might reside in the write buffer of the Memory Controller( Intel calls it integrated memory controller or IMC). The Memory Controller might take some more time depending on the algorithm that runs in the Memory Controller to handle writes. Is there a way I force all existing or pending writes in the write buffer of the memory controller to the DRAM devices ?? What I am looking for is something more direct and more low-level than wbinvd. If you could point me to right documents or specs that describe this I would be grateful. Generally, the IMC has a several registers which can be written or read from. From looking at the specs for that for the chipset I could not find anything useful. Thanks for taking the time to read this.

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  • How to detect default printer properties from browser?

    - by Annan
    Regardless of if this is a good idea or not, is it possible to detect printer attributes from the browser? The idea is that you want to print out a brochure that's selling something. Depending on different things such as if the printer is black&white/colour, high/low resolution, laser/inkjet, printing to a file, etc, you want to print out the page differently. For example you might choose different text colours or fonts, different image sizes, etc. My initial thoughts are: ActiveX, Flash, Java, Silverlight, browser plugins. Kudos if it's possible in javascript. I'm interested in all ways to do this, cross browser or not. Please no reasons about why this shouldn't be done ^_^

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  • Physical Cores vs Virtual Cores in Parallelism

    - by Code Curiosity
    When it comes to virtualization, I have been deliberating on the relationship between the physical cores and the virtual cores, especially in how it effects applications employing parallelism. For example, in a VM scenario, if there are less physical cores than there are virtual cores, if that's possible, what's the effect or limits placed on the application's parallel processing? I'm asking, because in my environment, it's not disclosed as to what the physical architecture is. Is there still much advantage to parallelizing if the application lives on a dual core VM hosted on a single core physical machine?

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  • controling individual pins on a serial port

    - by Faken
    I know that serial ports work by sending a single stream of bits in serial. I can write programs to send and receive data from that one pin. However, there are a lot more other pins on the serial port connection that normal aren't used but from documentation all seem to have some sort of function for signalling as opposed to data transfer. Is it possible in any way to cause the other pins that are not used for direct data transfer to be controlled individual? If so, how would i go about doing that?

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  • Android Nexus One - Can I save energy with color scheme?

    - by Max Gontar
    Hi! I'm wondering what color-scheme is more energy-saving for AMOLED display? I've already decided to manage c-scheme according to ambient light, thanks to this post: Somewhat-proof, the link posted by nickf: Ironic Sans: Ow My Eyes. If you read that in a well lit room, the black-on-white will be the most pleasant to read. If you read it in a dark room, the white-on-black will be nicer. But if I want to save battery power, should I use bright content with light background or vice versa? Is it possible anyway (they say it's not)? Thanks!

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  • Windows Mobile 7 corporate device...

    - by Toymaker
    Does anyone know of a Windows Mobile 7 device aimed at business use? I’m looking for something with bar code scanning capability. Psion, hand held, and honeywell only offer 6.5 at the moment. Granted, Windows Mobile 7 just barely came out and these sorts of devices usually lag a bit behind consumer toys...but hopefully someone can help.

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  • DeviceIoControl returning false

    - by Anand
    In my C# code,DeviceIoControl is returning false,the handle is correct DeviceIoControl(deviceHandle, IOCTL_STORAGE_GET_DEVICE_NUMBER, IntPtr.Zero, 0, OutBuffPtr,//&psdn, OutBuffSize, ref dwBytesReturned, IntPtr.Zero);

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  • What I need to know for writing a Camera Component

    - by Delphawi
    I want to write a component that uses 2 webcams (1 integrated in my laptop , the other is a USB webcam) What do I need to know (or have) to build a component to deal with the cameras (capture , record , movement recognition , and other image and video processing) ? and how ? (with C++ or Delphi) I just need to know the concepts and main techniques , any good resources or source codes would be great :) Thank you .

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  • Is there any advantage to having more than 16gb ram on a Windows Dev machine?

    - by Robert Kozak
    Assuming a machine (Dual Quad Core Xeon (2.26GHz) with 24GB RAM) running Windows Server 2008 and Hyper-V. How many VMs can I expect to run at the same time with good performance. Is this overkill? Can you really have too much RAM? Assuming 2GB per VM thats around 16GB for the VMs with 8GB left over for the Main OS and Hyper-V. Sound about right? Edit: Tried to make the question sound less like bragging. Was never my intention. Its a hard question to write.

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  • SRAM Cell Diagram - Can someone explain this a bit more clearly? ( From COMP1917 @ UNSW: Lecture 2 o

    - by Kristina
    I've begun watching a series of first year lectures from the University of New South Wales (UNSW) in Australia, and I'm a bit perplexed by the instructors explanation of how an SRAM gate works. I realize this isn't exactly "programming-related" but since it comes from a series of lectures relating to computing and programming, I thought StackOverflow may be able to help (reddit failed me entirely). In this lecture beginning at around 32:12, Richard (the lecturer) tries to explain how a "latch gate" works within SRAM. Although his students seem to keep up, I feel I'm missing something crucial which is preventing the concept from really "clicking" in my brain. For convenience, I've added the image from the video below: Thanks in advance for any help you can provide, but if this question doesn't fit your view of "programming-related" could you please provide an alternate forum for this in a comment when you cast your close vote? Thanks!

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  • What's your development setup? (Talking right now to my boss)

    - by Flinkman
    How do I tell my boss, that I need endless cpu power to automate my daily job? By the way, what's your setup, now in sep, 2008. How fast disks? How much memory? How many cores? How big screen? (Ok, what the hell are you doing, you may ask. I'm working in multiple environments, vmware. Have couple of build-systems running, for compatibility tests. These build systems are automated. The setup of the build system is also. Is there an another way?) Thanks!

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