On 10/01/2021 17:50, tom ehlert wrote:
there is simply no DOS application needing even 100 MB.
making more than 4 GB available won't change this.
applications needing more then 4GB would probably benefit more from
multiple cores.
You may not know it, but I still use DOS to this day in an industrial
setting. At our company we have a DOS program that actually controls
hundreds of remote machines with tens of embedded devices in each
machine in real time.
It's an old program for sure, much modified and amended, but it started
as a windows program but converted early on to DOS since it was simply
much easier to do all this in DOS. When you are talking to processors
running at 2MHz that must interpret and respond to complex communication
protocols without sacrificing the job they really need to do you have
protocols with very precise and tight turnaround times and timeouts. Yes
I could write drivers for every windows version that comes out (and only
a driver could handle this) but windows (and even Linux) give your
drivers access when they want and sometimes that is not enough.
With DOS on a modern machine I can handle dozens of these communications
in real time with nano-second turnaround times and the program doesn't
even hiccup.
However, to improve speed I also keep a lot of data in memory. One core
with unlimited RAM will run circles around multiple cores with not
enough RAM, and at one client I am already getting close to 2GB of data
that I want instant access to.
Andreas
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