M
Mike Brannigan
Gladiator said:This is the issue I am talking about.
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3044&p=2
This post seems to sum it up pretty nicely.
http://www.hardforum.com/showthread.php?t=1210609&page=4
OK - so the memory mapping issue is the one of mapping video memory into RAM
to protect it from snooping during DRM playback.
This cases issues on memory constrained systems and 32-bit platforms.
One solution would be to go 64-bit as a 32-bit process is allowed the full
4GB address space unlike the 2GB limit on 32-bit (changeable to 3GB just via
switches on boot.ini on an XP system etc).
I realize that saying move to a 64-bit OS and a 4GB or better RAM system may
seem excessive but unfortunately the larger amounts of RAM in high end
graphics cards coupled with the implementation of DRM (as required by the
media industry) has caused this issue to arise.
It is all a bit of a catch 22 - that unless the media industry back tracks
fully from DRM them Microsoft must make a secure method of enabling playback
(and the locked memory mapped way is the current solution in terms of
performance and functionality).
Are you aware of this issue still being relevant on a x64 system with x64
Vista and 4+GB of RAM and 1GB graphics card? - I have not seen it myself.