From mboxrd@z Thu Jan 1 00:00:00 1970 From: imp@bsdimp.com (Warner Losh) Date: Sat, 20 May 2017 15:05:29 -0600 Subject: [TUHS] Unix with TCP/IP for small PDP-11s In-Reply-To: References: Message-ID: On Sat, May 20, 2017 at 2:40 PM, Johnny Billquist wrote: > On 2017-05-20 20:18, Warner Losh wrote: > >> >> >> On Sat, May 20, 2017 at 4:46 AM, Johnny Billquist > > wrote: >> >> On 2017-05-20 04:00, Warner Losh > > wrote: >> >> https://ia601901.us.archive.org/10/items/bitsavers_decpdp11u >> lLTRIX112.0SPDSep84_870730/AE-X370C-TC_ULTRIX-11_2.0SPD_Sep84.pdf >> > ulLTRIX112.0SPDSep84_870730/AE-X370C-TC_ULTRIX-11_2.0SPD_Sep84.pdf> >> >> Looks like it requires MMU, but not split I/D space as it lists >> the >> following as compatible: M11, 11/23+, 11/24, 11/34, 11/40 and >> 11/60. It >> does require 256kb of memory. See table 2, page 6 for details. >> >> >> >> Uh...? Where do you see that there is any TCP/IP support in >> Ultrix-11? If any was done by someone else, there is no saying that >> it would be usable on a machine without split I/D. To be honest, >> I've never seen any mention of TCP/IP on any machine without split >> I/D space. I guess it could be done, but it would be a rather big >> headache... >> >> >> I read the sources to see the TCP/IP support was there (that's the bit >> about adding Berkeley Sockets). I see nowhere that it's excluded for the >> non I/D machines, but haven't tried it first hand. I got interested not >> because of the PDP-11, but because I have an old Rainbow that recently >> started running Venix (v7-based version) and was trolling around for >> some way to do TCP/IP to it (though w/o readily available ethernet >> cards, I'm not sure it is a viable project). >> > > You do know that the Rainbow is not a PDP-11, right? Only since '84 when I bought mine... They are both small memory boxes, though, and something that can run in a 256kB machine should be able to run on a 892kB machine... I have bits of mch.c/low.s from Venix that I can leverage for the port to the Ultrix kernel to the 8088 that's inside the Rainbow it would be running on. Warner -------------- next part -------------- An HTML attachment was scrubbed... URL: