Lpc2000

heh...

I used to do that! In fact, I was a big proponent of always doing the 
1st project with some 'XYZ-processor architecture' ENTIRELY in 
assembler. With technological life-cycles now measured in months I no 
longer have the luxury of doing this 'old-school' thing anymore.

About the only thing I will do hard-core assembly on is the 
highly-tweaked DSP/signal processing using FPGA cores, or specialized 
DSPs anymore. Squeezing every extra MIPS is usually worth the hassle 
of the extra effort and obtuseness of highly-crafted assembler in this 
case.

In fact, I used to pooh-pooh shrink-wrapped RTOS's! I was of the 
following camp..."I can write my own RTOS, why...I only need that 
infinite while(1) loop, and I am fine!". Now that I have spec'd in a 
bunch of these shrink-wrapped RTOS's, and written drivers, and a bunch 
of other stuff like this; I now find myself recommending 
shrink-wrapped RTOS's, file-systems and communications servers too!

The trick to successful deployment of this off-the-shelf technology is 
to wrapper this stuff so most of the details are hidden to the 
applications developers. All the apps-developers need to know is how 
to write generic C/C++ code in a generic environment like DOS, Linux, 
or Windows!

Ken Wada

--- In lpc2000@yahoogroups.com, Onestone <onestone@b...> wrote:
> Ah but the objective of learnig ARM ASM was to understand the fine 
> details of the instruction set to write my own optimised code, not 
to 
> use C, or somebody elses generic optimisation.
> 
> Al
> 
> kennethwada wrote:
> 
> >
> > The fastest way to use this is to do the following:
> > - Write a small piece of Keil "C" code
> > - Compile with the listing and Assemble source options checked
> > - look at dissassembled code with the "Arm Architeture Reference
> > Manual at your side"
> >
> > I did this, and managed to get some quality assembly language code 
up
> > and operational in an hour or two!
> >
> > Most of my asm code is in the startup. With the Keil tools, there
> > really is very little, or no need to write your own assembler.
> >
> > Ken Wada
> >
> > --- In lpc2000@yahoogroups.com, Onestone <onestone@b...> wrote:
> > > And a lot of time. It's 811 pages long! few days read for a 
decent
> > > novel, but a lifetime for a reference book!
> > >
> > > Al
> > >
> > > Ken Wada wrote:
> > >
> > > > RE:Learning ARM ASM
> > > >
> > > > Hello Chip;
> > > > You need the "Arm Archtitecture Reference Manual"
> > > >
> > > > Ken Wada
> > > >
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