Swad Posted November 27, 2005 Share Posted November 27, 2005 We're writing a new FAQ for 10.4.3. Here are a few of the questions that need answer to: What is PAE and why do I need it? What is NX/XD and why do I need it? What is SSE3 and why do I need it? Please post to this thread and answer these! We'll take the best answers and compile them into one big post of FAQ-goodness. If you have any other questions that you've seen a lot that need to be here, let us know! Link to comment Share on other sites More sharing options...
TribesMan Posted November 27, 2005 Share Posted November 27, 2005 Wikipedia SSE3 NX bit Wikipedia Something about PAE: Microsoft has recently introduced their ESP solution named DEP (Data Execution Prevention) with Service Pack 2 for XP and Service Pack 1 for Windows 2003. DEP relies on a hardware extension provided by Intel/AMD built on top of PAE (Page Addressing Extensions). PAE was initially created to overcome the 4GB limit resulting from 32 bit wide memory management. It effectively increases the affected data structures to cover additional bits in order to be capable of addressing beyond the 4GB boundary. Furthermore, the extended data structures contain a special NX bit, that is not used otherwise during "normal" PAE mode (reserved bit). The NX bit is used to mark pieces of data (particularly the stack and the heap) as readable but non executable, thus preventing data on an overflowed stack from being executed. The NX flag can be enabled and disabled per application, and it's only currently available on some 64 bit CPUs (regardless of the OS being 32 bits or 64 bits). Microsoft software DEP takes another approach, preventing the so-called SEH exploit (using a buffer overflow to overwrite an exception handler's address pointer in order to take control). Microsoft software DEP does not provide non executable code pages but SEH exploit protection only! I hope this will help you. Link to comment Share on other sites More sharing options...
Swad Posted November 28, 2005 Author Share Posted November 28, 2005 Thanks TribesMan. Are there any other questions that we should have on there for the time being? Link to comment Share on other sites More sharing options...
humasect Posted November 28, 2005 Share Posted November 28, 2005 "Why doesn't my keyboard and/or mouse work with 10.4.3 when it did with 10.4.1?" (because it/they is/are ps2) "Can I update to 10.4.3 from 10.4.1? (both patched)" Link to comment Share on other sites More sharing options...
ghost98 Posted November 28, 2005 Share Posted November 28, 2005 Any one know how to get a Sigmatel 9223 working on 10.4.3. I have everything working perfect excpept sound. It's driving me nuts! Thanks Link to comment Share on other sites More sharing options...
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