Sender:	root AT delorie DOT com
Message-ID:	<35498E9A.8E2E0835@usa.net>
Date:	Fri, 01 May 1998 08:58:02 +0000
From:	J P Morris <b52g AT usa DOT net>
Organization:	IT-HE
MIME-Version:	1.0
To:	opendos AT delorie DOT com
Subject:	Re: multitasking/multithreading programming examples
References:	<199805010039 DOT XAA16722 AT lince DOT las DOT es>

Rafa Gawenda wrote:
> 
> On Thu, 30 Apr 1998 12:15:45 +0100, Matthias Paul wrote:
> 
> >> DR Open DOS doesn't have threads. [...]
> >
> >On 386 with more than 4 Mb of RAM installed and EMM386 /MULTI=ON
> >in [D]CONFIG.SYS, the memory managers of Novell DOS 7, OpenDOS 7.01,
> >DR-OpenDOS 7.02, and DR-DOS 7.02+ all provide hardware virtualization
> >(multiple virtual DOS machines), pre-emptive multitasking, and
> >multithreading (if  Vladivar  has been enabled by a client
> >like TASKMGR loaded as a multitasker).
> 
> What is Vladivar?

Vladivar was the codename for the memory manager used in NWDOS
and after, i.e. OpenDOS.

The DRDOS 6 memory manager was called Smirnoff, but it was ditched for
Vladivar, because a rewrite was needed for the multitasking.  (Hence the
current memory manager is technically in version 1.xx, even though it is
called version 3.xx.)

Matthias is probably referring to Vladivar as emm386 in multitasking
mode, because it can also run in singletasking mode.

> 
> --
> Rafa Gawenda, <rgawenda AT pobox DOT com>
> PGP: (1024/BD2D5E31) A2 89 82 BC 8A B3 B7 10  35 36 68 A9 28 8C 65 88

-- 
* JP Morris        aka DOUG the Eagle (Dragon)  -=UDIC=-     *
* b52g AT usa DOT net         Author of the U6 developer's kit      *
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