Hi I'm using a gnu X-compiler (2.95.3) (Linux to VxWorks Intel). I have a device driver that maps memory to a device. It uses packed structures to aid this, in that the packed structures maps exactly to what the hardware expects. The only way I can attempt to mimic this using the X-compiler is to use the -fpack-struct compiler option. But this I assume would affect all structures in the file being compiled. It's turns out to be a lot of work to try and split the structures out of the files in question. Is there any way of making the compiler only pack the structures that require packing? I think that my only option at the moment is to access the hardware registers directly (by offsets). The other way is clever but not very portable??? Thanks Phil
