Compile to non-OS binary

[Amorphorious via Digitalmars-d-learn]

I would like to compile D for the different supported 
architectures only without and OS, C lib, D lib, or GC code. For 
example, as a boot loader or even bios binary.

In fact, it would be very helpful to have switches that disable 
the various "features" of D that I will not use rather than 
having to do any self compilation.

Ultimately LDC and/or GDC will be required for optimized binaries 
with the same limitations. For testing purposes I would also like 
the ability to compile to the OS PE structure.

For example

import BIOS;

void main()
{

   BIOSOut("Hello World");
}


will output