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#11
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Look this up in the MS KnowledgeBase (if your using Win2000) for an
explanation of IRQ sharing (by design): Q252420 And this one for those using WinXP: 314068 In short, here's what it says, and I quote: "In Windows, peripheral component interconnect (PCI) devices can share IRQs. In accord with the Plug and Play capability that is defined by the PCI specification, adapters are configured by the computer BIOS and are then examined by the operating system and changed if necessary. It is normal behavior for PCI devices to have IRQs shared among them, especially on Advanced Configuration and Power Interface (ACPI) computers that have Windows ACPI support enabled." RB "Arny Krueger" wrote in message ... "Lorin David Schultz" wrote in message news:L4yLb.3267$zk.2106@clgrps12 "Andy Peake" wrote in message om... After struggling with this same issue for several months, I was told by a Dell upper level tech support person that I cannot change the IRQ assignments on my notebook. I don't think I can with mine either, but I haven't sweated the issue because it works just fine the way it is (I'm using an MBox with a Sony laptop and external Firewire drive). Makes we wonder if sheets has an actual problem that needs solving, or if his efforts are more of a pre-emptive strike aimed at "potential" problems. I think that some people would be really surprised to hear that the old IBM mainframes, with zillions of I/O devices all over the place, many running fast and furious, routed essentially all I/O through 1 IRQ. They did this with clock speeds as low as 1 MHz or less. |
#13
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(DKID) wrote in message . ..
On 8 Jan 2004 07:52:21 -0800, (sheets) wrote: I have a dell notebook and it's firewire port shares IRQ 11 with: snip (Since I don't use either of these devices.) Any idea how I can accomplish this? Check out a notebook PC company called "M-tech". Their Notebooks have real Pentium 4 processors while most only have "Mobile" processors. They market themselves as Portable Desktops. I think - because of that, you can disable "Power Management" which automatically assigns IRQs. I recommend you call the company personally to check that out. Let us know what you find out? EQ Magazine, January issue, page 26 has the info box IRQs that I mentioned earlier in this thread. It leans toward the AMD processors for better IRQ configs. Peakester |
#14
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Thanks for the tip. Unfortunatley, they only make one model with UXGA
(1600x1200) which I need for authoring my book. Even if it's a better machine, I can't justify the extra dough and their default warranty is a "mail-in" which I don't want to deal with either. Similarly configured with similar warranty, the Dell is $1300 and the m-tech is $2000. -- web: http://www.jazguitar.com Soundclips: http://www.soundclick.com/bands/2/jackzuckermusic.htm "Andy Peake" wrote in message om... (DKID) wrote in message . .. On 8 Jan 2004 07:52:21 -0800, (sheets) wrote: I have a dell notebook and it's firewire port shares IRQ 11 with: snip (Since I don't use either of these devices.) Any idea how I can accomplish this? Check out a notebook PC company called "M-tech". Their Notebooks have real Pentium 4 processors while most only have "Mobile" processors. They market themselves as Portable Desktops. I think - because of that, you can disable "Power Management" which automatically assigns IRQs. I recommend you call the company personally to check that out. Let us know what you find out? EQ Magazine, January issue, page 26 has the info box IRQs that I mentioned earlier in this thread. It leans toward the AMD processors for better IRQ configs. Peakester |
#15
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"Arny Krueger" wrote in message
... I think that some people would be really surprised to hear that the old IBM mainframes, with zillions of I/O devices all over the place, many running fast and furious, routed essentially all I/O through 1 IRQ. They did this with clock speeds as low as 1 MHz or less. Those machines weren't processing 24bit,48k digital audio in real time though. |
#16
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Several folks want to know what the problem is...
The problem is that periodically the FW410 will just stop working and its blue LED will blink rapidly. Hot-plugging does not re-establish the connection. I have to reboot the computer and the fw410, sometimes multiple times before it'll work. Apparently, m-audio flashes the firmware everytime the system boots up and the only docs I can find on the blinking led talk about the firmware not flashing properly. Obviously, this did *NOT* happen in the middle of a session where it was working fine up 'til some point. There must be some other situation that causes this problem but it's not documented and their tech support is unaware of this. "DKID" wrote in message ... On 8 Jan 2004 07:52:21 -0800, (sheets) wrote: I went through something similar last year just to finally give up on the interface/software combo in my laptop. Can you tell me what the problem is? Wwhy you want to move the IRQ? What Firewire interface and DAW software are you using? I have a dell notebook and it's firewire port shares IRQ 11 with: IRQ 11 Dell C840 OK IRQ 11 Intel(R) 82801CA/CAM USB Universal Host Controller - 2482 OK IRQ 11 Intel(R) 82801CA/CAM USB Universal Host Controller - 2487 OK IRQ 11 3Com 3C920 Integrated Fast Ethernet Controller (3C905C-TX Compatible) OK IRQ 11 Texas Instruments PCI-4451 CardBus Controller OK IRQ 11 Texas Instruments PCI-4451 CardBus Controller OK IRQ 11 Texas Instruments OHCI Compliant IEEE 1394 Host Controller OK I'd like to move it over to: IRQ 4 - Com Port IRQ 5 - Modem IRQ 6 - Floppy Controller (Since I don't use either of these devices.) Any idea how I can accomplish this? |
#17
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"Kings_Avenger" wrote in message ... I believe you might see the most improvement by moving the ethernet controller off of irq 11. Avenger. 1) I have no ethernet connection when the problems occur 2) How do I move the IRQ? |
#18
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"Kirk Roy" wrote in message ... I will hazard a guess... If you're not using the com port, modem, or floppy controller see if you can disable them in the bios (I know the bios on my dell latitude doesn't allow this level of control but...). Then, back in windows, go into the device manager and manually change the configuration on the resources tab for the firewire controller. The IRQ is readonly in the resources tab. You might also try removing the firewire controller through the device manager and then restart windows and seeing if it uses an open IRQ when it's found after windows gets going again... Tried that. Comes back at 11. Which windows are you using? xp-pro SP1A |
#19
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#20
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"Sheets" wrote in message
news "Arny Krueger" wrote in message ... I think that some people would be really surprised to hear that the old IBM mainframes, with zillions of I/O devices all over the place, many running fast and furious, routed essentially all I/O through 1 IRQ. They did this with clock speeds as low as 1 MHz or less. Those machines weren't processing 24bit,48k digital audio in real time though. True most of the time, not that it wasn't tried and done. However, with interrupt processing, the biggest challenge is handling lots of interrupts from lots of disparate sources. A large IBM mainframe might handle 10,000s of interrupts per second, and from different competing sources. It might be good to remember that there can be as little as one interrupt per buffer, and that a buffer can hold 100's or even thousands of samples. IOW, an audio stream can involve only a few hundred interrupts per second. |
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