Hi,
I'm an engineer and a user of DESI-III, a professional-quality
freeware CAD from Belgium, with which I draw mechanical parts for
a product I'm developing.
Since I started using FreeDOS in 2007 I noticed that it was
taking longer for DESI-III to refresh the screen -- an important
point for CAD software, because we must zoom in and out all the
time.
Then a few days ago I noticed that, if the mouse is moved, the
screen refreshes much faster. For instance, the drawing I'm
currently working on would take 11 seconds to refresh, whereas if
the mouse is slightly pushed in any direction while the image is
appearing on the screen, the process takes only 2 seconds, i.e.,
it gets *five* times faster.
Then last night I decided to run Desi-III under MS-DOS. I
reinstalled it in a spare hard drive, and it turned out that the
speed difference is huge. Under MS-DOS the screen redraws so fast
that couldn't measure the time. It must be something below 0.2
seconds for that same drawing, so we are talking about a factor
of *fifty* here.
I had already written to Desi-III's author Hugo Marin about
this. He answered:
It is a surprisingly story you are telling, because IMHO
it has nothing to do with DESI-III but with your
configuration.
[..] DESI-III only calls the mouse on demand, it doesn't
need to call the mouse driver when the screen is
refreshed someway or an other, it only calls the mouse
when it needs displacements or a button detection else
the mouse is "left alone".
Back to FreeDOS, I did some simple testing, such as changing the
mouse driver from CTMouse to Logitech, and changing the mouse
itself, with no results.
If there is any additional test that I could do, please let me
know, and I'll report back ... after Christmas :-)
Desi-III can be downloaded from:
http://users.telenet.be/desi-iii
Regards,
Marcos
--------------------------------
Marcos Favero Florence de Barros
Sao Paulo, Brazil
55-19-3231-8194
fav...@mpcnet.com.br
------------------------------------------------------------------------------
This SF.Net email is sponsored by the Verizon Developer Community
Take advantage of Verizon's best-in-class app development support
A streamlined, 14 day to market process makes app distribution fast and easy
Join now and get one step closer to millions of Verizon customers
http://p.sf.net/sfu/verizon-dev2dev
_______________________________________________
Freedos-user mailing list
Freedos-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/freedos-user
