[fpc-devel] FPC micro controller

Jonas Maebe jonas.maebe at elis.ugent.be
Fri Jul 31 13:29:35 CEST 2009

On 31 Jul 2009, at 13:21, Desmond Coertzen wrote:

> As far as endian is concerned: Integer types i found always to be  
> little
> endian in most pascal compilers by default.

It's big endian on big endian architectures.

> As far as the FPC compiler is concerned, this should not be a  
> concern as it
> seems the decisions regarding the byte order was made and cemented  
> in place
> long ago. But now that you guys mention byte order, are there  
> directives in
> FPC where integer byte orders can be changed?

No, it's always the native byte order of the underlying architecture.

> If language syntax might be extended to provide bit width  
> accessibility for
> MCU's, i think the same methods must be followed throughout FPC: In  
> all
> technical specifications I have come accross, bit 0 is always the  
> least
> significant bit of any word regardless the size of the word. That  
> makes
> things simple.

At least in the PowerPC documentation (both from Motorola and IBM),  
bit 0 is always the most significant bit.


More information about the fpc-devel mailing list