From mboxrd@z Thu Jan 1 00:00:00 1970 From: lm@bitmover.com (Larry McVoy) Date: Sat, 27 Apr 2013 20:48:13 -0700 Subject: [TUHS] Need a new PDP-11 or VAX? In-Reply-To: References: <20130427224146.GR664@bitmover.com> <20130428013911.GD24560@mercury.ccil.org> Message-ID: <20130428034813.GU664@bitmover.com> The 68020 came close. On Sun, Apr 28, 2013 at 01:38:47PM +1000, Nick Downing wrote: > I think the 68K came fairly close to what you guys are asking for, with its > addressing modes like (a0)+ and so on. it's only 32 bit but that's better > than 16 bit :) the problem I have with 68K is that while the assembly > language is basically orthogonal the machine code is not, there are too > many exceptions in the encoding, which I think was done to save precious > code space. (Kind of like ARM Thumb code -- and by the way you may find ARM > more PDP11-like than the other archs you mentioned). Anyway, some of the > latest 68K such as Dragonball(?) have gone some way towards correcting this > deficiency by not implementing many of the more irregular insns. > cheers, Nick > On Apr 28, 2013 12:00 PM, "John Cowan" wrote: > > > Larry McVoy scripsit: > > > > > What I'd like is a new 64 bit PDP-11. > > > > With a 16-bit instruction stream still, or with wider instructions and > > more registers, almost but not quite entirely unlike the Vax? > > > > -- > > De plichten van een docent zijn divers, John Cowan > > die van het gehoor ook. cowan at ccil.org > > --Edsger Dijkstra http://www.ccil.org/~cowan > > _______________________________________________ > > TUHS mailing list > > TUHS at minnie.tuhs.org > > https://minnie.tuhs.org/mailman/listinfo/tuhs > > > _______________________________________________ > TUHS mailing list > TUHS at minnie.tuhs.org > https://minnie.tuhs.org/mailman/listinfo/tuhs -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com