Please do not hold me responsible for any incorrect information that you may find here. I can make no guarantees as to its accuracy. If you find something here that you know is incorrect, or if you would like contribute your own technical revelation or discovery, please don't hesitate to email me (address on the bottom of timmy's home page). It's always appreciated.
This page will be updated as more information comes to hand. Again, any contributions will be appreciated.
If you are
experiencing problems with you hard drives spinning down, click here.
The difference between the v3.2, v3.2A and v7.0A boards?
- Minimum CPU core voltage - 2.5v
- Maximum CPU internal clock speed multiplier - 3.5x*
- Maximum CPU external clock speed - 75 MHz**
* 3.5x is the highest documented setting, however settings up to 5.5x may be obtained by using 3.2a/7.0 settings.
** The v3.2, although it is not documented, individual boards may achieve 83.3 MHz FSB by using 7.0 settings
- Minimum CPU core voltage - 2.2v
- Maximum CPU internal clock speed mutilplier - 5.5x
- Maximum CPU external clock speed - 75 MHz***
*** The v3.2A, although it is not documented, also supports an 83 MHz FSB
- Minumum CPU core voltage - 2.2v
- Maximum CPU internal clock speed mutiplier - 5.5x
- Maximum CPU external clock speed - 83 MHz
- Uses different super I/O chip to the v.3.2 and 3.2A (Making bios updates from previous versions incompatible)
Thanks to David Wilson for providing clarification on this issue.
Q: Does the M571 provide support for Hard Drives over 8.4 GB?
v3.2 & 3.2A - Provides support with bios date 01/06/99 (or later)
v7.0A - Provides support with bios date 01/09/98 (or later)
Cain has had confirmation from PcChips regarding this, although they did not specify which bios versions provided support. In any case, the latest updates do.
Q: System locks up when wav files are played using onboard SoundPro under Windows 95
This is most
likely due to an IRQ conflict. C-Media says that Windows 95 should
allocate IRQs correctly, but we all know that that doesn't happen very often.
Cain did not observe this problem on his M571v7.0A system, and I have not observed it on either of my systems.
Q: General Protection Fault when shutting down Windows 98 (Using onboard SoundPro)
Q: Joystick does not work properly under Windows 98 (Using onboard SoundPro)
Q: "Port already open" error with Windows 95 Dial Up Networking
This is not a problem associated specifically with the M571, however it is a common one. It may be due to Windows 95 not allocating IRQs correctly. Even though no conflicts show up under the Device Manager, your modem may be conflicting with another device. If you encounter this problem, try changing your modem’s IRQ manually in the Device Manager to one that is unallocated. Watch the "conflicting device list" to make sure you are not creating another conflict.
It is always a good idea to place modems on COM 1 and serial mice on COM 2.
Q: The latest Windows 98 video drivers (version 1.13) do not work correctly with Windows 98
Download and unzip the 597v113.zip file from this site. Place 597v113.exe on your hard disk; within the windows folder may be a good place. Call this file from the autoexec.bat by including a line for that purpose, so that the executable will update the VGA BIOS when your system boots.
This page was last modified on 27 September 2002