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From:	Andrew Cottrell <andspamtrap DOT aty DOT exemail DOT doty DOT com DOT dot DOT yau AT unknown DOT addr>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Advice on a good refernce book
Date:	Thu, 09 Sep 2004 18:19:16 +1000
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>Its been a little while since I have used C.  I have small project where I
>will be taking a string of positional data from an RS232 port using a
>embedded PC to directing some servo's using a RS232. Its a robotics thing.
>The processor is a 486dx (PC104 format) with about 2meg of flash ram (no
>hard drive) so I won't be running windows.     This is well beyond anything
>that I have done in the past.  Is there a good practical reference that
>addresses the subject and methods?  I have a couple of references but none
>touch the subject.
A starting point would be to look for an RTOS to use and then try to
find a book that uses the RTOS.  As for how to drive a RS-232 port on
an embeded PC104 board then there should be refernces to the RS-232
UART in the manual that came with the PC104 board of it will have a
block diagram that shows which chip includes the uart. 

There are allot of different RTOS's out there. Some cost money and
some are free. Some include support for various PC hardware and some
do not. Some require Borland 4.52, some use VC++ 6.0 and some use
GCC...

As you can see there are allot of choices, but the choice of the RTOS
is the most important item to start with as it will cause you the most
problems. 

I would ask the PC104 supplier what RTOS's are available off the shelf
for free and start with these. Hopefully you can get eCOS or uCOS II
for it.

Andrew

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