[Svardos-users] SvarDOS: own command interpreter soon

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Mateusz Viste mateu****@viste*****
Wed Nov 24 18:38:16 JST 2021


Hello all,

Currently SvarDOS uses the FreeCOM shell as its command.com intepreter. 
FreeCOM is nice and all, but quite memory-hungry. Its XMS-swapping 
capability mitigates this in part, but pre-386 machines do not have XMS.

This is the main reason that led me to starting a dedicated command 
interpreter for SvarDOS. I work on this since over a month now, and 
should be able to release a "preview" version before the end of this 
week. It is named SvarCOM, and its main goal is to be tiny, so it can 
run on an 8086 machine with 256K of RAM still leaving much memory to 
applications (in such setup, FreeCOM consumes about 30% of memory, which 
is hardly acceptable). SvarCOM's resident size is under 2K.

More information here:

https://osdn.net/projects/svardos/svn/view/svarcom/trunk/svarcom.txt?view=markup

https://osdn.net/projects/svardos/svn/view/svarcom/trunk/freecom.txt?view=markup

Of course SvarCOM won't replace FreeCOM right away. I plan to include it 
first as an alternative package, and only once it is thoroughly battle 
tested and no obvious bugs are left, it may become the default SvarDOS 
shell.

The functional preview release is too be published very soon.
Stay tuned. :)

Mateusz



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