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?
Version
3.2
- 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
Version
3.2A
- 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
Version
7.0A
- 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?
Information
from Amptron:
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)
See http://www.amptron.com/html/bios.html#pm9100
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.
See http://www.cmedia.com.tw/e_t_faq.htm#cmi8330
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)
Download
updated driver files from C-Media here
(110 Kb) to fix this problem.
See http://www.cmedia.com.tw/e_t_faq.htm#cmi8330
for instructions.
Q:
Joystick does not work properly under Windows 98 (Using onboard SoundPro)
Download
updated driver files from C-Media here
(20 Kb) to fix this problem.
See http://www.cmedia.com.tw/e_t_faq.htm#cmi8330
for instructions.
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.
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This page
was last modified on 27 September 2002