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From: Rugxulo <rugxulo AT gmail DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: CPMI memory
Date: Wed, 23 Mar 2011 15:15:48 -0700 (PDT)
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hi,

On Mar 23, 2:14=A0am, Ster DOT  DOT  DOT  AT aol DOT com wrote:
>
> maybe this is not the right place ...
> but I also want USB 3.0
> will it work with XP and my old DOS-programs ?

I'm no software engineer nor tech dude, so I don't know. I honestly
don't even know if Windows supports USB 3.0 yet, and the newest
machine I have access to (barely a month old) doesn't have it, AFAICT.

> you can get external HDs with 2TB and USB 3.0 =A0for <$200 these days =A0=
!

My newest "loaned" machine "only" has 1 TB. But I don't think XP can
support such big drives, sadly. Not sure about 1 TB, but I think I
heard 2 TB wouldn't work. Anyways, on a semi-related note, doesn't
FAT32 max out at 2 TB anyways? Yeah, I think that's why some people
want to get rid of the MBR in favor of GPT or whatever. (Some people
also want to kill BIOS in favor of EFI. Ugh, DOS is doomed.)

> while processor speed no longer seems to increase

Clock speed, no, but the raw speed does. Moore's Law isn't valid
anymore. They never did ramp up the Pentium IV to 10 Ghz like they
thought. Prescott was way too hot, barely got to 3.8 Ghz I think.
(They went back to Pentium-M to create the Core architecture.) You
can't run higher than that without liquid nitrogen, apparently. So no,
you'll probably not see higher than that. Latest aforementioned
machine of mine is 3.2 Ghz dual core. Yes, it's definitely faster than
older models. If you get the latest / greatest from Intel, you'll
definitely see a difference. They haven't rested on their laurels,
things have definitely been sped up. But as you know, since raw clock
speed has reached a barrier, everything is multicore now, which means
multithreading (i.e. non-DOS friendly).

> why do we need Windows at all , can't everything be done in DOS ?
> it should be upgraded, though.
> 64bit

No V86 mode, needed for backwards compatibility with 16-bit stuff
unless you want to emulate in software (slow). But VT-X (if available)
might help. Oh, forgot to mention in other post, XP Mode originally
*required* VT-X, but apparently even MS wised up to the fact that a
lot of Intel cpus still don't have it, so they "fixed" that, heh.

> boot from micro-SD

BIOS can probably already fake it as a normal HD anyways.

> no 1MB-limit

raw BIOS, EMS, XMS, VCPI, DPMI, unreal mode.

> long filenames

ROM-DOS 7 or any with appropriate driver (DOSLFN, StarLFN, etc).

> browser (I never used Arachne)

elinks, lynx, Arachne all work ... if your network card is supported
(unlikely). But none of them support the more complicated, modern tech
stuff (e.g. Javascript, Flash).

> is protected mode really required
> complicates things

Required? Yes, technically, you can't use certain features without it.
But people also "want" it for safety against crashing programs so they
don't take down the whole machine. Sure, I agree, you can live without
it (kinda), but most don't want that risk.

> can I have my HD and OS inividually encrypted ?
> That should fool any virus attack

Don't know, Linux has some optional encryption available for things
like that, but I've never used such. Honestly, your best bet is
probably just using Linux + DOSEMU (or VirtualBox if you can be bugged
into creating your own FreeDOS image).