On Mon, Sep 21, 2015 at 09:15:13AM -0400, Noel Chiappa wrote: > > From: tony duell > > > In some cases it should be possible to write a machine code program > > that executes on 2 processors with wildly different instruciton sets. > > I have this bit set that I was told (or something, the memory is _very_ > vague) that early versions of the KL-10 had this hack; the root block on the > disk was the boot block both the PDP-10 and the PDP-11 front end machine, and > the first instruction or two was very cleverly construced and sent the two > machines different ways. Alas, I looked in the front-end PDP-11 code (in the > KLDCP; directory) and saw no signs of this, so maybe it was an urban legend? > > Noel
Perhaps you are thinking of the 1984 ioccc winner: http://www.ioccc.org/1984/mullender.c http://www.ioccc.org/1984/mullender.hint /P
