Re: Byte endianess vs Bit endianess

[John Darrington]

On Mon, Nov 18, 2019 at 05:10:02PM +0100, Jose E. Marchesi wrote:

     Another alternative would be to add the ability to define "endianness
     groups" in Poke structs:
     
     deftype IEEE754_Double =
       struct
       {
         endian
         {
           int<52> fraction @ fraction_offset;
           int<11> exponent @ exponent_offset;
           int<1>  sign @ sign_offset;
         };
       };
     
     That would make the compiler to generate peek/poke instructions assuming
     the whole group shall be written as a discrete integral, endian wise.
     
     wdyt?

This would seem like the right approach to me.  And if this was the
case, then the @ xxx_offset bits would be unnecessary.   It would DTRT
depending on the endianess in effect at the time.

J'