On Tue, Jan 15, 2013 at 12:05 PM, Johnny Billquist <bqt at softjar.se> wrote: I don't think it was, but It's hard to say, as it's just one big binary blob to me. However, would the GEM even fit on a PDP-11? It would not easily self host, but few of the PDP-11 compilers were asked to self host. They started cross compiling from the 10's then from the Vaxen. By the time PDP-11 went EOL, the cross compilers were running on Alpha (and maybe PMAX - again too man beers ago).