SSM wrote:
> Hello All,
> 
> I am using C51 and my code runs on Infineon controller.
> For company policy reason I am not revealing the exact controller and sorry
> about that.
> I would like to improve the speed. I was using the large memory model for
> this compiler
> and now I use small memory model. This has improved speed a lot.
> I would like to know if there are some more such settings for this compiler
> to improve the speed.
> Thank you in advance.
> 
> Best regards,
> Shailendra
> 
> 

  read the section of the manual on making the code smaller and faster.

you may use intrinsics which map c statements to asm instructions
this can improve speed in modules which r cycle instensive e.g. most
processor haver leading count zero instruction ( there will be a
corresponding multi nstructiont for the same ) u can use intrinsic to
replace this code . this will give u codesize as well as speed

SSM wrote:

> Hello All,
> 
> I am using C51 and my code runs on Infineon controller.
> For company policy reason I am not revealing the exact controller and sorry
> about that.
> I would like to improve the speed. I was using the large memory model for
> this compiler
> and now I use small memory model. This has improved speed a lot.
> I would like to know if there are some more such settings for this compiler
> to improve the speed.
> Thank you in advance.

# Read the assembler output, and start to learn the code the compiler
creates for given constructs. ie understand your tools
# Focus on the code blocks, where you know speed matters.
# Use in-line assembler, but only as a last resort.
# Increase the CPU clock speed, or move to a newer infineon model, like
the 868 or 888 variants ?
-jg

On Mon, 15 May 2006 18:16:26 +0200, the renowned Rene Tschaggelar
<none@none.net> wrote:

>SSM wrote:
>
>> Hello All,
>> 
>> I am using C51 and my code runs on Infineon controller.
>> For company policy reason I am not revealing the exact controller and sorry
>> about that.
>> I would like to improve the speed. I was using the large memory model for
>> this compiler
>> and now I use small memory model. This has improved speed a lot.
>> I would like to know if there are some more such settings for this compiler
>> to improve the speed.
>> Thank you in advance.
>
>Sure.
>1) throw out floating point
>2) use smaller datatypes, eg byte
>    instead of integer where appropriate
>
>Rene

Using statics may make it faster. 


Best regards, 
Spehro Pefhany
-- 
"it's the network..."                          "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

SSM wrote:

> Hello All,
> 
> I am using C51 and my code runs on Infineon controller.
> For company policy reason I am not revealing the exact controller and sorry
> about that.
> I would like to improve the speed. I was using the large memory model for
> this compiler
> and now I use small memory model. This has improved speed a lot.
> I would like to know if there are some more such settings for this compiler
> to improve the speed.
> Thank you in advance.

Sure.
1) throw out floating point
2) use smaller datatypes, eg byte
    instead of integer where appropriate

Rene
-- 
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net

Hello All,

I am using C51 and my code runs on Infineon controller.
For company policy reason I am not revealing the exact controller and sorry
about that.
I would like to improve the speed. I was using the large memory model for
this compiler
and now I use small memory model. This has improved speed a lot.
I would like to know if there are some more such settings for this compiler
to improve the speed.
Thank you in advance.

Best regards,
Shailendra