7 Jan
2019
7 Jan
'19
9:29 a.m.
From: Fritz Mueller
Oh, one last thing: if anybody else out there has a
real working '11/45
+ RK05 and wants to try this RSTS image, let me know, and I'll send you
a copy (all 2.5MB of it, hah). It'd be interesting to see if this a
really just limited to my machine?
Good idea. Two more along the same lines:
Try running your RSTS image on Ersatz-11, see if it's a simulator issue.
And try bringing up Unix V6 on your machine; if it's a hardware issue with
your machine, it might show with that, too. (I can help with fault analysis
on V6, if _anything_ doesn't work properly.) It will need a single RK pack,
I can help with providing the image, if needed.
Noel
7 Jan
7 Jan
2:59 p.m.
On Jan 7, 2019, at 6:29 AM, Noel Chiappa via cctalk
<cctalk at classiccmp.org> wrote:
Try running your RSTS image on Ersatz-11, see if it's a simulator issue.
I?ll give that a go.
And try bringing up Unix V6 on your machine ... I can
help with providing the image, if needed.
I?ve thought about that; Unix V6 is actually next on my list of OS?s to try. I think I
have seen a fairly detailed set of instructions on building an image from this from the
commonly available distribution tape. But if you have an RK05 image already ready to go,
go ahead and send it over and I?ll give it a try!
It wasn?t clear to me last time I looked that I could build V6 to run off a single pack
without having a second RK05 drive and pack available for swap?
Day gig starts back up today after winter break, so less bandwidth for PDP-11 hacking now
unfortunately!
cheers,
--FritzM.
8 Jan
8 Jan
3:25 a.m.
On Mon, 7 Jan 2019, Fritz Mueller wrote:
It wasn?t clear to me last time I looked that I could
build V6 to run
off a single pack without having a second RK05 drive and pack available
for swap?
I have 2.9BSD on a single RK05 pack *with* a small swap space, it works
very nicely. I have a 11/45 with RK05, RL02 and RX02 in a single cabinet.
Christian
10:47 a.m.
On Tue, Jan 8, 2019 at 2:25 AM Christian Corti via cctalk
<cctalk at classiccmp.org> wrote:
I have 2.9BSD on a single RK05 pack *with* a small
swap space, it works
very nicely. I have a 11/45 with RK05, RL02 and RX02 in a single cabinet.
My experience with 2.9BSD on an 11/24 in the late 80s was that an
install from tape was difficult on a system with an RL02 as the main
disk because the install pulled in so much stuff that you really
needed to juggle two RL02s and mount one as /usr to get the sources
and extras if you wanted to rebuild the kernel. I think if you used
the distro kernel there was enough room to install into 10MB (but
there wasn't room for multiple kernel files sitting around).
If you built a system on a larger configuration, I can see it would be
possible to copy only the necessary bits to an RK05 but I can't
imagine there's much room left.
As I recall, you can fit a full install (sources, man pages...) of
2.9BSD on an RK07 with plenty of room to work.
One of the challenges I had then was my largest PDP-11 at home was an
11/24 with 2MB of RAM (a used KT24 was $600!), RX11/RX01, an RL01 of
my own, and a borrowed RL02. At work, I had access to an 11/24 with 4
RL02 and I could cable in an RK611 with two RK07 as well as a TU80
tape drive. I did the initial install with the work rig, then trimmed
things down to fit on an RL02 to take home.
If I ever start playing with that system again, I want to find a
couple of MS11-PB (M8743) 1MB ECC cards to max it out.
-ethan
10:53 a.m.
On Tue, Jan 8, 2019 at 8:47 AM Ethan Dicks via cctalk <cctalk at classiccmp.org wrote:
I'm wondering how 2.9BSD was with ~1MB of RAM, but say ~40MB of disk. I
have a machine I play with from time to time that's x86 + 892MB of RAM +
40MB disk and was wondering if it would be worth it to try to adjust the
V7ish port I kinda sorta have to it to work with 2.9BSD...
Warner
One of the challenges I had then was my largest PDP-11
at home was an
11/24 with 2MB of RAM.
10:58 a.m.
On Tue, Jan 8, 2019 at 9:53 AM Warner Losh <imp at bsdimp.com> wrote:
On Tue, Jan 8, 2019 at 8:47 AM Ethan Dicks via cctalk
<cctalk at classiccmp.org> wrote:
As I recall, as a single-user machine, 2MB was no problem. Decently
responsive. The only time I ever made the machine wheeze was when
recompiling the kernel. Nothing else I did was fat enough to really
tax it.
-ethan
One of the challenges I had then was my largest
PDP-11 at home was a
11/24 with 2MB of RAM.
I'm wondering how 2.9BSD was with ~1MB of RAM, but say ~40MB of disk. I have a
machine I play with from time to time that's x86 + 892MB of RAM + 40MB disk and was
wondering if it would be worth it to try to adjust the V7ish port I kinda sorta have to it
to work with 2.9BSD...
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cc＠informatik.uni-stuttgart.de -
ethan.dicks＠gmail.com -
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imp＠bsdimp.com -
jnc＠mercury.lcs.mit.edu