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ACPI (Advanced Configuration Power Interface) (Dec 1996)

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chrisNova777:
Advanced
Configuration
Power
Interface
first introduced in December 1996

https://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface
preceded by APM : http://www.oldschooldaw.com/forums/index.php/topic,4653


--- Quote ---In October 2013, the original developers of the ACPI standard agreed to transfer all assets to the UEFI Forum, in which all future development will take place.[3] The latest version of the standard is "Revision 6.1", which was published by the UEFI Forum in March 2016.[4]
--- End quote ---

chrisNova777:
 


--- Quote ---ACPI is the new power management specification of 1997 (PC97) It intends to save more power by taking full control of power management to operating system and not through BIOS. Because of this, the chipset or super I/O chip needs to provide standard register interface to OS (such as Win95 OSR2) and provides the ability for OS to shutdown and resume power of different part of chip. The idea is a bit similar to the PnP register interface . (plug n play)
--- End quote ---

chrisNova777:
https://www.sweetwater.com/sweetcare/articles/turn-off-acpi-mode-windows-xp/

https://www.sweetwater.com/forums/showthread.php?1804

chrisNova777:

--- Quote ---I was wondering if any of you computer sequencing and audio folks have
come across drivers for gear that wouldn't install correctly.

i.e. a usbmidi interface whereby hardware conflicts in the control panel prevent proper installation of device.

More specifically, in what is called ACPI mode (win2k here), the pc indicates that all drivers are on one interrupt (IRQ 9 in my case), when actually what is happening is that the pc is automatically allocating the interrupts as virtual IRQs. The downside is that you cannot (apparently) change these IRQs manually and if there is an installation problem, then your stuck.

After speaking with a tech from manufacturer of said device, he told me that I should convert to standard PC mode in the control panel of op system. This way the IRQs will go back to being PnP style which are physical not virtual IRQs and they can be manually configured and there are 24.

After doing a little research, I found that they (Microsfot) don't recommend
changing what they call the Hardware Abstraction Layer (HAL) from ACPI to Standard PC and vica versa, and if so, only by reinstalling the op system with Standard PC mode selected:
( http://support.microsoft.com/default.aspx?scid=kb;en-us;Q237556)
And the of course, you must reload the drivers for all your devices.

Can anyone shed light on this???
is it preferable to alot of you folks to operate in Standard PC mode instead of ACPI mode or is the tech giving me an excuse to cover up the fact that their current drivers won't install in my PC, and then is this the definition of incompatibility.

I think that the drivers of devices should be written to be able to adapt to changes in PC architecture, or am I asking too much? I thought this was an interesting question to raise about some details in our platform's background that are often overlooked.
Thanks for listening.
pianimal
--- End quote ---


--- Quote ---As a followup to this,
I recently made the switch from ACPI mode to Standard Mode.
The results were that all my drivers reloaded pretty seemlessly.

Some had to be "guided" to their respective locations, but when complete,
viewing of the IRQ structure revealed the actual IRQ that the devices were using,
and also resolved a host of conflict issues regarding my Midi interface, MOTU audio (PCI) interface as well as USB host controller.

Standard PC mode is definitely the way to go.
--- End quote ---


--- Quote ---Windows 2000 needs to be in Standard Mode for music application. However, you can save yourself a huge headache by backing everything up and upgrading to Win XP Professional! I used to use Win2K recently and was using Standard Mode, but XP is rock solid for music, and I was very skeptical of XP at first. The driver support is excellent as well, and best of all, you don't need to run XP in Standard mode! In fact, some manufcaturers recommend against running XP in Standard Mode.
Everything is working great for me in XP, using Sonar 2 XL, Softsynths such as FM-7, M-Audio Delta 1010 with WDM driver, Emagic AMT 8, etc.
--- End quote ---

chrisNova777:
The pentium 166/200MMX (Oct 1996) were the
last cpus to be released by intel before the ACPI Revolution

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