From 87b0d08c0e25360b308fe971396b693814ddc730 Mon Sep 17 00:00:00 2001 From: janwas Date: Sat, 8 Sep 2007 08:07:43 +0000 Subject: [PATCH] new command line parameters: - disable mahaf and thus all physical memory mapping or direct port IO - promise that TSC-based QPC is safe on this system This was SVN commit r5335. --- binaries/system/readme.txt | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/binaries/system/readme.txt b/binaries/system/readme.txt index 96bee50e55..ff212127ea 100755 --- a/binaries/system/readme.txt +++ b/binaries/system/readme.txt @@ -15,4 +15,21 @@ COMMAND LINE OPTIONS: -yres=N set screen Y resolution to 'N' -editor launch the Atlas scenario editor --actorviewer when combined with -editor, launch the Actor Viewer tool \ No newline at end of file +-actorviewer when combined with -editor, launch the Actor Viewer tool + + +Windows-specific: +-wQpcTscSafe allow timing via QueryPerformanceCounter despite the fact + that it's using TSC and it may be unsafe. has no effect if + a better timer (i.e. the HPET) is available. + should only be specified if: + - you are sure your system does not engage in + thermal throttling (including STPCLK) OR + - an "RDTSC patch" is installed + this flag is also useful if all other alternatives are worse + than a potentially risky or slightly broken TSC-based QPC. + +-wNoMahaf prevent any physical memory mapping or direct port I/O. + this disables all ACPI-related code and thus some of the + timer backends. specify this if problems are observed with + one of the abovementioned subsystems.