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NTVDM speed (or lack thereof) (Announce)

posted by Rugxulo Homepage, Usono, 16.02.2011, 02:24

> EDIT: http://www.drdos.com/products/drdos703.htm "Single User, $35.00,
> Buy Now"
Sorry about that, better safe than sorry. :-P

(BTW, rr, was it intentional or not to leave me as moderator? IIRC, you went out of town quite a while ago, and even I mostly forgot well after that, but I never was courageous enough to ever bother with anything. Well, I've seen you do similar corrections here on rare occasion, so I hope I didn't overstep my bounds. But either way is no sweat off my back.)

> From what I had tried the best perfomr DR-DOS task manager. E.g. I maneged
> to run 2x Quake, DN, and something else and switch between. Taks run
> on backgroud. You can adjust time slices for foreground/background
> tasks. But it's binded to drdos emm386.exe which has some
> compatability issues/bugs.
It has some weird keyboard issues when loaded, moreso if DPMI is "off". I've even had some apps hang with it, perhaps even Mpxplay and NDN (can't remember). Also, don't forget, hard limited to 64 MB per task, which can be somewhat annoying in modern times (and that's whether you use a separate XMSv3 or not). Maybe most of us don't care (I don't majorly), but it's still a limit to be wary of. GCC optimizations can easily eat up that much (and multitasking while compiling is definitely more pleasant than waiting for the dumb thing to finish, too slow!!).

> I don't know how havily it depends.

Pretty heavily, and actually I think it's documented somewhere that EMM386.EXE has several binaries/drivers embedded in itself (oddly enough), possibly even old code from MS and Quarterdeck (presumably legal, heh).

> Maybe Japheth could add some missing fuction but as we don't know
> what and what it do. If you want to try it here's the complete drdos:
I don't think Japheth can work miracles. Well, he's definitely a DOS saint, but still .... :-D No, seriously, it's too weird and closed source. Even OpenDOS never released it, honestly probably because they don't have the licenses from various people to do so. (As mentioned, EMM386 uses some weird proprietary code.)

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