Path: utzoo!mnetor!uunet!nbires!isis!udenva!news
From: news@udenva.cair.du.edu (netnews)
Newsgroups: comp.bugs.2bsd
Subject: Re: Help getting BSD2.10 on a system without a 1600 BPI tape...
Message-ID: <9817@duorion.cair.du.edu>
Date: 20 Feb 88 02:32:36 GMT
References: <1445@ncsuvx.ncsu.edu> <3281@lll-winken.llnl.gov>
Reply-To: rneitzel@orion.cair.du.edu.UUCP (RICHARD NEITZEL )
Organization: U of Denver
Lines: 23

In article <3281@lll-winken.llnl.gov> casey@lll-crg.llnl.gov.UUCP (Casey Leedom) writes:
>In article <1445@ncsuvx.ncsu.edu> kdb@cscosl.ncsu.edu (Kevin D. Bond) writes:
>> [Kevin has an 11/23+, but no 1600BPI tape drive to boot 2.10BSD with.]
>my recommendation is that you go with the RD52 route you mentioned last.
> .....
>  However, the really nasty part of this is that none of it will do you
>any good at all since the 11/23+ doesn't have split I&D if I remember
>correctly (unfortunately I don't have my PDP book with me here).  

Yes, you remember correctly, the 11/23+ and 11/23 are pre I&D days CPUs. 
If you want to upgrade to an I&D class CPU, the cheapest is the 11/53, which is
simply an 11/73 with the cache removed. I don't know if DEC will sell you
this as a board however. You should be able to get an 11/73 new or used without
much trouble. Note that there are some hardware problems in the upgrade with
other boards that don't like the 11/73. If you want more info I'll be glad to
help.

I would like to know more about Xinu. Does it support the memory management
features of the LSI-11 series. I understand it was developed for the 11/2,
with the 16-bit addressing scheme. Can I use my 11/73's with their 4 M address
space?

				Richard Neitzel