IRQ settings & Win2000

Kirk wrote on 2/17/2002, 4:16 PM
I'm running Win 2000. I looked, and on interrupt 9 : MS ACPI compliant system, MPU compatible MIDI device, ESS Maestro PCI audio drive, Matrox Dual Head video, Tx Inst. OHCI device controller, VIA USB UniversalHost controller, Another VIA USB universal host controller, and Win 2000 Promise Ultra 100 IDE controller. That's 8 different things. Is this compromising video performance or rendering ability? Or is this normal? I understand that Win 2000 directs these resources automatically or something, and that you can't change things without disenabling ACPI and reinstalling. I'm not much of a techie, I of course like all of us want to get the most out of what I've got, and make sure I'm not missing an easy performance gain out of a simple allocation error! Advice appreciated.

Comments

way2slo wrote on 2/17/2002, 4:40 PM
there is 2 ways to do it.
first, if u fresh install win2k, on first start up blue screen, when it ask for F6 hit to install 3 party drive, hit F5 instead of F6, then it will show standard pc mode then select it and do normal install.
if u have win2k installed already. go to the device manager and chosse computer type, go to properties, and update driver.Choose "List Devices" then find standard mode, rebbot and your computer will go throught the process of finding your hardware again.
i prefer fresh install win2k. either way should work.
P.S. when u shut of ur pc either win2k or xp under standard mode, u have to shut it off manually.
bw wrote on 2/17/2002, 6:03 PM
I think an even better solution us to do fresh install to another drive or partition,say about 4 Gigs. 2000 lets you install any where. Only load the programs and devices you need for editing. Internet access is not really necessary and virus protection not needed on this drive. When I did this dropped frames became a thing of the past, audio and preview are much smoother. I still have a couple of IRQ conflicts and IRQs 2&7 are not being used. I had to change cards in slots to get the Firewire card on its own IRQ.
Cheers, Brian
MacMoney wrote on 2/17/2002, 6:35 PM
Hey Guys I found this on the Cakewalk.net group
I've done this and It works,with NO PROBLEMS on my Win2k systems so try this at your own risk
I hope this helps

George Ware

ACPI
Although ACPI is designed to allow easy integration of power
management and PCI Bus resources, we have seen numerous cases where disabling ACPI as improved performance and eliminated resource conflicts. Please note that you will need to have all of your device drivers present when doing this, as Windows will re-enumerate your hardware and prompt you for the drivers.
The following lists steps to remove ACPI from your system.
1. Open Device Manager from Control Panel - System - Hardware - Device Manager
2. Go to Computer tab and select the "ACPI enabled PC" option that you have there
a. Select Properties
b. Go to Driver tab
c. Press Update Driver...
3. "Welcome to Upgrade Device Driver" wizard opens up, press next to the first question. From the next page select "Display a list of the known drivers for this device so that I can choose a specific driver"
4. Select "Show all hardware of this device class"
5. From "(Standard computers)" select "Standard PC"
6. After the new driver has been installed press reboot
7. After reboot Windows XP redetects all of your hardware and installs device drivers again for them.
8. After reinstalling device drivers open Device Manager once again and open Computer tab and look if you have two "Standard PC" devices there. If you do have a look at the properties of both "Standard PC" devices and remove the one which has "driver not installed" in the Device Status screen
9. You are done and ACPI is no longer in use with Windows XP
Further information regarding IRQ sharing in Windows XP can be found
at the Microsoft website at:
<http://support.microsoft.com/support/kb/articles/Q252/4/20.ASP>

billybk wrote on 2/18/2002, 6:45 AM
Here is a link to a Microsoft support web page detailing the
recommended way of changing from ACPI to Standard PC and why:

http://support.microsoft.com/default.aspx?scid=kb;EN-US;q237556

Billy Buck
Control_Z wrote on 2/18/2002, 7:21 PM
I wouldn't disable ACPI unless you have a good reason to. From what I've seen, the ratio is about 100 to 1 of people that have actually solved a video problem by doing it. And out of those a large percentage was probably due to the fact they had to reinstall their OS to do it. Or at least ALL their drivers.

DV is just way too slow a data rate to be affected by the extra couple of microseconds it takes to have everything on the same IRQ.