From: b4@gewt.net (Cory Smelosky)
Subject: [TUHS] 2.10
Date: Thu, 20 Nov 2014 23:55:58 -0500 (EST) [thread overview]
Message-ID: <alpine.GSO.2.03.1411202351250.646@gewt.net> (raw)
In-Reply-To: <CAC20D2OsAL=mduWBiorqDSbm6f=dHQwVqww9Kwgk7dXTPeLUeg@mail.gmail.com>
On Thu, 20 Nov 2014, Clem Cole wrote:
> I don't think the BSD networking code in 2.10 worked on systems with only
> 256K bytes of memory. The kernel is too big even without networking and a
> lot of work was done to push things out of the kernel. [The 17th bit (split
> I/D) really only mattered for user space, the kernel mapped things around -
> but with only 18 bits of address map there is not much space]. Adding
> networking and in particular the space for the mbuf's becomes a real issue.
>
It's unsupported; see my email where I pasted the "HCL" from 2.10's
GENERIC config.
>
> Here are some thoughts..
>
> 1.) Easiest/Cheapest solution might be to front end the system with an RPi,
> Intel Edison or the like and run the IP stack on it and then use one or
> more serial ports from the micro to 11.
>
Well, 2.10 has SLIP, but it'd certainly be easier to implement a simple
userland tool to talk to a frontend!
> 2.) See if you can dig up an old copy of the 3 COM's first product - UNET -
> which was the original TCP/IP for V7. It's old and not very sexy, but the
> kernel requirements are minimal and if all you want it telnet & FTP that
> will work.
>
That I am pretty sure I DO NOT have source for.
> 3.) If you have real hardware, see if you can find an old Able "Enable"
> board which will allow you to put 4Megs of memory in an 40 class processor
> (you get a cache plus a new memory MAP with 22 bits of address like the 45
> class processors). I had 2.X working on that years ago (and wrote a
> USENIX paper on it). The Enable board support was in the BSD 2*
> distributions (I put there) but I doubt its been tried in many years.
>
That sounds like a neat board. Betting it's a bit hard to find, though.
;)
> 4.) Ultrix-11 should boot on a 40 class system, but I do not remember if on
> the 18 bit machines you could configure networking. Armando might
> remember if Fred ever made that work. If any one could have or would have,
> it would have been Fred. As I said, there just is not a lot of space and
> frankly there is not going to be a lot of space left for user programs.
>
I'd check but I'm pretty sure I don't have Ultrix-11 sources. :(
> Clem
>
> PS I remember running V6 on 11/34 with 48K bytes of memory for a few months
> as our memory for that system was back ordered. It was slow, but it worked
> and we were happy. It was our machine!!
>
What were you using for paging/swapping on that?
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
next prev parent reply other threads:[~2014-11-21 4:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-21 1:32 Jacob Ritorto
2014-11-21 1:56 ` Nick Downing
[not found] ` <CA+oaVqwGKiOPKm8Bz62Z0s9dEYiAbTXR9=WrQyjqGFX-uaYmjQ@mail.gmail.com>
2014-11-21 3:25 ` Jacob Ritorto
2014-11-21 3:36 ` Cory Smelosky
2014-11-21 4:02 ` Cory Smelosky
2014-11-21 4:43 ` Clem Cole
2014-11-21 4:55 ` Cory Smelosky [this message]
2014-11-21 5:46 ` Clem Cole
2014-11-21 6:07 ` Cory Smelosky
2014-11-26 6:28 ` [TUHS] BerkNet Erik E. Fair
2014-11-26 6:48 ` Cory Smelosky
2014-11-27 16:42 ` Mary Ann Horton
2014-11-29 16:38 ` Clem Cole
2014-11-26 18:24 ` Clem Cole
2014-11-26 18:35 ` Dan Cross
2014-11-26 20:03 ` Clem Cole
2014-11-26 18:26 ` Dave Horsfall
2014-11-21 6:13 ` [TUHS] 2.10 Jacob Ritorto
2014-11-21 13:06 ` Clem Cole
2014-11-21 15:37 Noel Chiappa
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