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Thank you very much for your response
I have already found it. Microchip controller PIC18F4550
VID (Vendor ID) = 0x04D8
PID (Product ID) = 0x0011
Thanks agin
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I have bought FT232BQ USB UART IC , it is mentioned in the data sheet that it supports Isynchronous data transfer mode with an option bit in the EEPROM , but i cant understand how to do so..
what is the max. data transfer rate i could achieve using this IC and how can i acheive it ,, thnx in advance
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ammeer_a wrote: max. data transfer rate i could achieve
isnt that (from the datasheet) "A new EEPROM based option allows the FT232BQ to return a USB 2.0 device descriptor as opposed to USB 1.1. Note : The device would be a USB 2.0 Full Speed device (12Mb/s) as opposed to a USB 2.0 High Speed device (480Mb/s)."
'g'
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yes , but this maximum speed can only be achieved in Isychronous data transfer , and i dunt know how to get this rate ..
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i have made a simple hardware interface consisting of an ADC and am trying to connect it to my labtop through usb,,i searched the net and i found that to access usb i need to have a driver for the device and this is done in kernel mode , unfortunately ,i dunt know how to write a driver although am familiar to c++ and vb codes
if any body can help me to write this driver ,, I need it to allow me to send and recieve bits from the ADC (in serial of course)
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I did a similar thing about ten years ago though I bought an empty PCI card for my circuitry rather than using USB. When I realised I needed to write a driver I looked around and ended up buying a development kit from VToolsD which allowed me to program a driver, based around a sample, using C++.
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Whats ADC?
Wouldnt you be better connecting it to the serial port? You should be able to use the onboard serial driver. To create a USB device you need a lot of hardware first, adn then writing a driver will probably take you about 6 months plus.
Dont underestimate the kernel or attempt to create a driver unless you are seriously committed. There are a lot of pitfalls and it takes a long tine to learn it properly. Morality is indistinguishable from social proscription
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I've got a RAID project to run into.
As you know, MS disk manager provides soft RAID managment such as creating RAID disk array and reconstructing disk image on RAID0 RAID1 RAID5.
Is there any API or DEVICEIOCONTROL code in C++ so I can manage RAID in my APP instead?
modified on Sunday, January 31, 2010 10:36 PM
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dont have idea about APP but if you wanna configure raid in your pc i might be able to help you
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How often should one defrag one's hard disk (or partitions)? Is defragmentation really useful?
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The answer is simply, it depends.
I'm running automatic defragmentation every week for our fileservers and databases.
A drive that's used only for reading don't need it.
A workstation ends up somewhere inbetween.
There are several points with defragmentation:
Reading a file from the disk is faster if it's contiguous. (unless you have a solid state drive)
Less file segments takes less space in the MFT which might make the drive a bit faster.
In the case of a harddisk crash the chance that a recovery tool will be able to save your data is greatly enhanced if the files are contiguous.
Overusing defragmentation is of course pointless as it shortens the life of the disk and everything gets slow during the actual defragmentation.
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Thanks.
Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...
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Defraging your hard disk(or partitions) must be useful. But you cannot do it too often. Once a month is enough, or it will certainly damage the hard disk.
modified 27-May-14 4:55am.
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ThanksMe, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...
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Cool. Thanks.Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...
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Not that often. You should defrag your computer new, after you install the programs you use, and then once every three to six months. If defragmentation is still a serious problem, you should just buy a larger hard drive and clone your current one. Total cost may be around $120 for 500 GB laptop drive or 1TB and associated enclosure to use for cloning.
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I believe that's a Mini PCI[^] socket for e.g. WLAN cards.
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ts a PCI express port, commonly used for modules such as HSDPA and so on. If it IS for a HSDPA card you will also have a SIM holder somewhere on the laptop, possibly in the battery tray.
THis is what an HSDPA module looks like: http://www.option.com/en/products/products/modules/[^]
Morality is indistinguishable from social proscription
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Are you sure? I thought that a mini PCIe slot still had the notch between the two segments of the contact and was smaller than that. I think markkuk was right in calling it the older mini pci port.
3x12=36
2x12=24
1x12=12
0x12=18
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You are correct, since you can see inside the slot you can tell which is which.
Morality is indistinguishable from social proscription
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I have a netbook that has no Optical Drive.
I have a CD that I wish to put onto the netbook. (it is a game that will require access to the cd)
Is it possible to copy the disk to a memory stick and then run it as a psuedo optical drive?
I suspect the drive ID will have to be reassigned, but I cannot for the life of me remember how to do this, and is it even possible for me to make this work?
I may seem a little dim on this but any help would be appreciated.
(I am going on holiday shortly and would like a couple of games that I normally play on my main computer to be on my little 'un)
Cheers
------------------------------------
No Good Deed Goes Unpunished Clare Boothe Luce
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Two discrete option and one hand waving suggestion.
0) Copy the CD to a usb stick/network share/etc as a bunch of files and then run the setup program. This should work unless there's CD check DRM or a crappy installer involved.
1) If 0) fails, rip the CD to an ISO; then use daemon tools. This should handle any bot the most noxious DRM/copy protection schemes.
2) If 1) fails, start looking for how the warez types are installing this one.
3x12=36
2x12=24
1x12=12
0x12=18
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