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<div class="moz-cite-prefix">On 09/27/2013 01:32 PM, Thaddy wrote:<br>
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<blockquote cite="mid:52456CD4.3070404@thaddy.com" type="cite">
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Even that is TSR based, not a real multi-tasker.<br>
Under DOS a process can be swapped out and re-activated by a
hardware interupt, either f.e. a timer or the keyboard.<br>
So, at most, co-operative multi-tasking in the sense that multiple
processes can run at the same time.<br>
Because DOS is non-re entrant real multitasking will be very hard
to achieve. It would be done by now ;)<br>
<br>
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<br>
You are probably right. <br>
<br>
But those nice little DOS - Appliances (most vividly I remember one
by Innominate, that in the background acted as a Novel Print server)
seemingly did something very close to preemptive multitasking. <br>
<br>
-Michael<br>
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