On Wed, Feb 22, 2023 at 11:30 PM Lars Brinkhoff <lars@nocrew.org> wrote:

> Clem Cole wrote:
> > MIT had a modified a.out format for the NU machine ports - that might
> > have been called b.out.  CMU had macho which again was an extended
> > a.out but even more flexible.
>
> Digital Research's GEMDOS also used a modified a.out format (at least as
> found on the Atari ST), pretty much the original PDP-11 format with
> 32-bit addresses.
>

MIT's PCC ports to various micros, especailly x86, also used b.out that was
quite similar to a.out.

Warner