Lpc2000

Initializing the vfp unit is new territory for me. Is there any 
general documentation/guidelines on how to implement floating point 
numbers on lpc's?

thanks in advance,
Leighton

The LPC doesn't have a VFP11 unit, so this is a dead end.

All FP on the LPC is in software, period.

--
Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
CrossWorks for MSP430, ARM, and now AVR processors  

> -----Original Message-----
> From: Leighton Rowe [mailto:leightonsrowe@...m] 
> Sent: 12 January 2005 21:45
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] floating point functionality
> 
> 
> 
> Initializing the vfp unit is new territory for me. Is there 
> any general documentation/guidelines on how to implement 
> floating point numbers on lpc's?
> 
> thanks in advance,
> Leighton
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 
>

At 03:44 PM 1/12/2005 , Leighton Rowe wrote:
>
>Initializing the vfp unit is new territory for me. Is there any 
>general documentation/guidelines on how to implement floating point 
>numbers on lpc's?

What LPC part has the vfp?  I thought they were all ARM7TDMI-S.

--
newell

Ok then. I was browsing thru a an example lpc cstartup file that had 
what looked like vfp config commands, with vfp registers that I 
haven't seen in the arm7tdmi-s core before. So, u may be right about 
the vfp component only being software. Sorry if I confused anyone.

Leighton




--- In lpc2000@yahoogroups.com, Scott Newell <newell@c...> wrote:
> At 03:44 PM 1/12/2005 , Leighton Rowe wrote:
> >
> >Initializing the vfp unit is new territory for me. Is there any 
> >general documentation/guidelines on how to implement floating 
point 

> >numbers on lpc's?
> 
> What LPC part has the vfp?  I thought they were all ARM7TDMI-S.
> 
> --
> newell

--- In lpc2000@yahoogroups.com, "Paul Curtis" <plc@r...> wrote:
> The LPC doesn't have a VFP11 unit, so this is a dead end.
> 
> All FP on the LPC is in software, period.

And with newer versions of GCC, it is certainly usable:
http://groups.google.dk/groups?hl=en&lr=&selm=qdyvd.39%24PN1.23%
40news.get2net.dk

And Nicolas Pitre has said that the softfloat code in GCC 4.0 will be 
even faster:
http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2004-
December/026019.html

Karl Olsen