Hi, On Thu, May 30, 2013 at 11:39 AM, Bernd Blaauw <[email protected]> wrote: > > I'm not familiar with any DOS flavor of all that PAE/AWE stuff that > Windows allows for some 32bit drivers and programs.
I'm not really a Windows dude, or at least I don't know much about its internals nor APIs. In case it wasn't obvious, Windows ain't my preference. But do they still support PAE? Did they ever? (Win2k3 perhaps?) I know they had some support, but it seems they "mostly" (or entirely?) dropped that in favor of 64-bit due to "driver bugs". (Yes, I know the kernel uses PAE for NX, but due to licensing [1], you don't always get access to it.) Re: DOS, the only PAE I've ever seen was that unsupported version of DOS/32A [2], and I have no idea if it even works. Even if the extender itself worked (which is somewhat questionable, from what I can tell), there's no guarantee that you could just "drop in" any old Watcom app and expect that to be able to use the full 4 GB, much less 64 GB. (Feel free to prove me wrong, though.) CWSDPMI dude had plans to add PAE eventually [3], but he's always busy, so I guess he never finalized it. (He did some minor hacking around the Christmas [4] holidays but never released anything, at least not to me.) 1. http://www.geoffchappell.com/notes/windows/license/memory.htm 2. http://dos32a.narechk.net/index_en.html 3. (comp.os.msdos.djgpp, Jan 2010): "For those who need more than 4GB, I'll provide some code that allows you to map 5GB+ memory (up to 64GB) into the address space on request." 4. (email, Dec. 2012): "FYI, I will probably build an updated CWSDPMI over the holidays. One of my big memory users has been testing on several new pieces of hardware and has found two new bugs." (Feb. 2013): "New job is keeping me very busy ... too busy to even build a new release of two products that I have people bugging me about." ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Freedos-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freedos-devel
