Biography of David Lindauer
work I do a mix of embedded systems and windows programming.
Our embedded systems these days run on windows CE and the
programs usually are designed to run either on CE or on the desktop
depending on compiler settings. Mostly I am concerned with
networking devices together via TCP/IP, or making devices like gateways
to a frontend or web servers in C/C++. Sometimes I've also been
on a tangent working various Visual Basic or C# projects. The
work is loosely part of the field called 'building automation' - it is
more on the 'building protection' side of that.
involved with web development both at the GUI level and at the backend
level, because we do our device configuration through web interfaces.
Although we basically rolled our own simple backend instead of
using one of the standard platforms.
I'm involved with
encryption, xml, and various other technologies. I do
participate in a Saas project but not as a major contributor.
But still, I have a little taste of what is involved.
this job I had some time to work on various personal projects, and
before that I worked another embedded systems job in the development of
manufacturing equipment. We added touch screen controls to our products
back in the 80's. It is a fact that Steve Jobs saw the results
of that work while buying manufacturing equipment for his plant...
but more of a rumor that perhaps seeing that work helped shape
certain designs that have become somewhat ubiquitous in some of the
devices he has had built. No I didn't start that rumor but
I thought it was interesting...
I did graduate from college
with a bachelor's degree in Electrical Engineering... I spent a
year or so on coursework for the Master's but when push came to shove
didn't finish the project work I was to do so never got the Master's.
To be honest I was somewhat relieved about that...
I was uneasy about the box having a Master's was going to put me in.
working here I've done various things in my spare time, a lot of work
was done with the CC386 compiler and tool chain for example.
CC386 was an amalgamation of tools that I found on the web, and I
spent a lot of time making them work together and improving the C
compiler from its original rather buggy ability to parse K&R C
compatible programs. I had written the run-time library from the
ground up, however.
This compiler saw a lot of use, and
some people contributed major efforts in pointing out bugs. There
were some feature requests as well; one year I added far pointers to
this 32-bit compiler so that a professor could use it to teach his
students operating systems.
As CC386 was originally an
MSDOS compiler I ended up supporting targeting virtually every major
DPMI system that had been developed. A contributor who has
been a friend for a long time helped early on with that but
writing a command line shell that would select the compiler options
associated with the various DPMI platforms; a variant of that is still
a part of Orange C.
One contributor passed a lot of C
programs through CC386 to find issues, suggested improvements to the
code generation especially for floating point, and also contributed bug
fixes to the libraries. Toward the end he also helped me
improve the preprocessor to be standards-compliant. I did have a
version of CC386 that would generate 68020 code and people were
interested in that as well.
I also worked on a PPP TSR for MSDOS
back before broadband was readily available. Kind of a fun
little project, however, hard to debug because there was such a wide
range of modems being used by the users.
There was also the GRDB
debugger. (which stood for 'Get Real Debugger' - a play on words
as this is a 'real mode' debugger) This is a jacked-up MSDOS
debugger that has everything including the kitchen sink. At the
end it also had support for 32-bit and DPMI programming, as well as
support for the so called 32-bit real mode. It even had a symbol
table, and a helper utility that will populate it from the map files
from various assemblers of the day.
Again it saw a lot of
use, even gaining some traction in the BIOS community. One of
the bios developers had some major feature requests and bug fix
requests for me... I think I added SSE instructions to the list
of instructions it would assemble and disassemble for him. By
that time GRDB already supported MMX. I think the last
thing major thing I did with GRDB was make it work with a serial port
in addition to working with the PC's monitor - this for a company that
wanted to give it to customers of an embedded board they were
producing. Hey, I netted a free board out of it :)
done a lot of other stuff in my free time including a simple OS.... one
of my favorites is the 68020 simulator written in x86 assembly. Not very efficient, but fun! It of course had a built-in debugger, no symbol table though.
eventually I grew tired of some major issues with the CC386 source code
and also wanted to branch into code optimizations, which CC386 simply
didn't do. And I wanted to support embedded systems better, as
well as design a system where all the pieces were designed to work
together and some other things as well.
C was born. It has been around for a while now, with the
preliminary work being started back in the 2006 time frame. It
has been maturing over the years.
The only major thing Orange C
inherited from CC386 was the IDE, but even so there were major rewrites
to it. Orange C can generally do everything CC386 did, with one
exception: I haven't implemented far pointers. As there
was a period where I supported both CC386 and Orange C, I was also
finding ways to improve the Orange C compiler when people suggested
ways to improve CC386.
In my spare time I've meditated, and I
like to eat out; I used to do nearly every meal out but not so
much any more. But I still go out on weekends, or sometimes for
a salad in the evenings. And I've never married, which is why I
can still affort to spend time on Orange C :)