There are issue with floating points, DLLs and COM InProc Servers, therefore to achieve maximum compatitibility between 1.X and 64 bit 2.0 MS opted to run it in 32 Bit mode.
Quote from http://blogs.msdn.com/joshwil/archive/2004/10/15/243019.aspx: "The point is, in v1.0 and v1.1 we let you create assemblies that might very well have problems running on a 64bit platform, because of that we have decided that with .Net 2.0 (which is the first version of .Net to support 64-bit platforms natively) there will be an enforced loader policy such that 1.0 and 1.1 apps will be loaded by the 32-bit runtime on the machine. Read more at http://blogs.msdn.com/joshwil/ Stefan http://www.dotnetjunkies.com/weblog/stefandemetz -----Original Message----- From: Unmoderated discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] Behalf Of Shawn Wildermuth Sent: Tuesday, September 06, 2005 10:54 PM To: [email protected] Subject: Re: [ADVANCED-DOTNET] 64bit Windows XP vs 32 bit >From what I understand, there are two JIT'ers in 2.0, one for 64bit and one for 32 bit. IN 1.x, there was never a 64 JIT'er created, and I suspect never will be. Good thing in 2.0 is that write your code once and if it has a 64 bit JIT, it will run in 64 bit...write-once, run-many? Wait, don't tell anyone I said that ;) Thanks, Shawn Wildermuth http://adoguy.com C# MVP, MCSD.NET, Author and Speaker ->-----Original Message----- ->From: Unmoderated discussion of advanced .NET topics. ->[mailto:[EMAIL PROTECTED] On Behalf Of Pardee, Roy ->Sent: Tuesday, September 06, 2005 4:45 PM ->To: [email protected] ->Subject: Re: [ADVANCED-DOTNET] 64bit Windows XP vs 32 bit -> ->Can you say some more about this Shawn? Or give a reference? -> I'm curious why 1.x isn't able to use the large memory... -> ->Thanks! -> ->-Roy -> ->-----Original Message----- ->From: Unmoderated discussion of advanced .NET topics. ->[mailto:[EMAIL PROTECTED] On Behalf Of ->Shawn Wildermuth ->Sent: Tuesday, September 06, 2005 1:38 PM ->To: [email protected] ->Subject: Re: [ADVANCED-DOTNET] 64bit Windows XP vs 32 bit -> ->In 1.x he's right, in 2.0 you should be able to use the large memory. ->It's JIT'd to 64bit code, but not sure whether AMD vs. Intel ->64bit would make a difference. -> ->Thanks, -> ->Shawn Wildermuth ->http://adoguy.com ->C# MVP, MCSD.NET, Author and Speaker -> ->->-----Original Message----- ->->From: Unmoderated discussion of advanced .NET topics. ->->[mailto:[EMAIL PROTECTED] On Behalf Of ->Mark Marlow ->->Sent: Tuesday, September 06, 2005 4:35 PM ->->To: [email protected] ->->Subject: [ADVANCED-DOTNET] 64bit Windows XP vs 32 bit ->-> ->->Hi Gurus, ->-> ->->I am using a 3rd party class library developed / based on the .net ->->runtime. ->->Would it automagically utilize large memory model? The vendor tech ->->support dude claims it would run under "32 bit ->compatability mode" and -> ->->thus be limited to 4GB of memory. ->->This seems odd as one of the promises of .net was ability to run on ->->various processors without needing to recompile. ->->Comments? ->-> ->->- Mark ->-> ->->=================================== ->->This list is hosted by DevelopMentor. http://www.develop.com ->-> ->->View archives and manage your subscription(s) at ->->http://discuss.develop.com ->09/06/2005 04:37:16 PM -> ->=================================== ->This list is hosted by DevelopMentor(r) http://www.develop.com -> ->View archives and manage your subscription(s) at ->http://discuss.develop.com -> ->=================================== ->This list is hosted by DevelopMentor. http://www.develop.com -> ->View archives and manage your subscription(s) at ->http://discuss.develop.com 09/06/2005 04:49:14 PM =================================== This list is hosted by DevelopMentor. http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.10.18/91 - Release Date: 06/09/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.10.18/91 - Release Date: 06/09/2005 =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
