Hi Peter,
I hope you don't mind but I have downloaded your project and am going to build it using the Raisonance compiler. I have been looking for complete projects written in Keil C to recompile and compare final code sizes and speed. I won't publish the results without permission and will send you the results when I am finished if you would send me you email address to bryanw@amrai.com

Thank you

Bryan Whitton
American Raisonance
877-315-0792

Peter Dannegger wrote:
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Hi Michael,

I must disagree you on every point.
It tells me, that you never used C on the 8051 earnest.

I used assembler several years and now C. And I'm impressed about the compact and fast code, generated with C.
My (still true) comparison results can you found at:

http://www.specs.de/~danni/compars/index.htm


Also you can see a whole project, written in C on:

http://www.specs.de/~danni/ap.../index.htm

I can say, this project in assembler should only about 20% more compact, but 3 times in size of the source code and need 10 times longer to write it. Also harder to understand from another people, which must maintenance projects after you.

Also some times the speed grows on C. E.g. my 32 bit multiplication in assembler was more than 2 times slower, than the library function of the C compiler. And also bigger in size.

Yes, it helps, if you have assembler experience to write also compact C programs. But it need many more experience to write compact and fast assembler programs.

As I started with C, I mixed also assembler and C.
And now I write C only, since I discovered, that fighting against 1µs on every 100µs was not worth the discomfort.



Peter