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- From: jerry@msi.com (Jerry Shekhel)
- Subject: Re: CBM mention on 12/11/92 Computer Chronicles
- References: <1hv80bINNjkt@uwm.edu>
- Sender: nobody@ctr.columbia.edu
- Organization: Molecular Simulations, Inc.
- Date: Thu, 31 Dec 1992 17:29:59 GMT
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- Message-ID: <1992Dec31.172959.17455@sol.ctr.columbia.edu>
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- Gregory R Block (bloc1469@ee.ee.uwm.edu) wrote:
- :
- : >Don't you think that for some people, VM, MP, DIG, etc., may be worth a few
- : >extra CPU cycles? If real-time response is always the most important thing,
- : >why do all these other OS's bother with all these other things?
- :
- : With VM, it isn't the CPU cycles that drop your performance like a
- : rock...
- :
-
- That's not fair. While it's not swapping, we're talking about a few extra
- CPU cycles. When it is swapping, it's running a heck of a lot faster than the
- equivalent non-VM system under the same load :-)
-
- :
- : And how many real-time OSes _HAVE_ VM? Think about it. Sure, you'll
- : see lots of bloated pigs with it, but...
- :
-
- Yes, yes, yes -- most of them don't. But why is it that you feel that
- real-time response is absolutely more important than VM? Don't you agree
- that it may depend on what you need to use the machine for?
-
- :
- : Take SVGA for example. What is
- : it? Is it 640x480, as the original SVGA cards were, or is it
- : 1024x768? 800x600? Is it a 24-bit pallete instead of a 15-bit one?
- : Is it a truecolor display? Nobody knows.)
- :
-
- VGA is 640x480x4. SVGA is 800x600x4. And there does seem to be a standard
- in SVGA -- Microsoft's SVGA Windows driver supports all SVGA's. The rest
- are extended SVGA, with resolutions up to 1280x1024x8, 800x600x15, and
- 640x480x24. There are several different extended SVGA chipsets, and they
- are not compatible. So what? Load the appropriate driver, and all Windows
- software works automatically. It's just like the Mac world -- all the cards
- are different, but they all work with all Mac software, and nobody cares
- about "standards". Is there some reason why they should?
-
- :
- : >And that much more advantageous!
- :
- : Again, it IS an advantage. But that advantage is greatly reduced by
- : it's NECESSITY. That same advantage exists for nearly all
- : productivity software on the IBM, each coming with its own graphics
- : drivers. On those systems, it's referred to as a pain in the ass, not
- : an advantage.
- :
-
- That's incorrect. If you develop your software for the Windows platform
- (and Windows development is now the majority in the PC world), all you have
- to do is use the Windows API. No worries about graphics hardware, chipsets,
- standards, etc. Your comment is true for DOS software, but not for Windows.
-
- :
- : It doesn't happen on the Amiga. It's real cute to watch stuff on an
- : IBM system running Windows because the sound is nearly NEVER on cue.
- :
-
- I have never seen what you describe. On the other hand, I don't have much
- Windows sound software. I do play background music sometimes, but I guess
- that doesn't have anything to be "on cue" with.
-
- :
- : I don't believe that's the only reason, I never have, and your point
- : below proves it. I do know a good bit about Windows, and frankly, the
- : more I learn about it, the less I like it.
- :
-
- You're well within your rights :-)
-
- :
- : "practically no DOS code is being used". That is NOT _NONE_. And if
- : it wishes to escape the kludges brought from MS-DOS itself, then it
- : MUST be NONE. DOS must be totally unnecessary as anything but
- : bootstrap. You don't use bootstrap code within your OS, do you?
- :
-
- OK. If you run Windows with the FastDisk driver, DOS isn't even used for
- file management. I can't say that no DOS code is being used, because I
- haven't seen the Windows source code, and you can't say otherwise for the
- same reason. However, with FastDisk, Windows manages *all* the hardware
- devices in the system. Tell me, then, how is it still not an OS?
-
- : Greg
- --
- +-------------------+----------------------------+---------------------------+
- | JERRY J. SHEKHEL | Molecular Simulations Inc. | Time just fades the pages |
- | Drummers do it... | Burlington, MA USA | in my book of memories. |
- | ... In rhythm! | jerry@msi.com | -- Guns N' Roses |
- +-------------------+----------------------------+---------------------------+
-