19 Jun
2019
19 Jun
'19
2:20 p.m.
unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
Help - have a? nice? looking? 11/20? plus? a? weird analog? computer and? a? Nike
guidance? gyro platform? for? AJAX (? 2? gyros loose? need? prints? to? rewire?
correctly)? ? ? in? trade? for? and? extra? ribbon Mike? we? had.
so anyway today's? questions
-? bell labs? UNIX? machine? ?says? 11? or? 11/20
-anyone have schematics or wiring chart? for NIKE AJAX? Gyro Plantform?
Drop offlist? as? not? to? clutter? things
thanks? Ed#
19 Jun
19 Jun
6:23 p.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
My recollection, Unix on the 11 started with the 20 but because of the
limited capabilties, it really was done on the /45.
The three rings or 3 execution levels were not supported on the
original machine.
bb
On Wed, Jun 19, 2019 at 5:20 PM ED SHARPE via cctalk
<cctalk at classiccmp.org> wrote:
unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
Help - have a nice looking 11/20 plus a weird analog computer and a Nike
guidance gyro platform for AJAX ( 2 gyros loose need prints to rewire correctly)
in trade for and extra ribbon Mike we had.
so anyway today's questions
- bell labs UNIX machine says 11 or 11/20
-anyone have schematics or wiring chart for NIKE AJAX Gyro Plantform?
Drop offlist as not to clutter things
thanks Ed#
7:11 p.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On 06/19/2019 08:23 PM, Bob Smith via cctalk wrote:
My recollection, Unix on the 11 started with the 20
but because of the
limited capabilties, it really was done on the /45.
The three rings or 3 execution levels were not supported on the
original machine.
MMU and expanded memory would be a great help in a
multi-user system. The original PDP-11 with 56 KB of memory
was pretty limited. Great for DOS-11 and RT-11, but more
complex OS'es needed more resources.
Jon
7:20 p.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On Wed, Jun 19, 2019 at 9:23 PM Bob Smith via cctalk
<cctalk at classiccmp.org> wrote:
My recollection, Unix on the 11 started with the 20
but because of the
limited capabilties, it really was done on the /45.
The good stuff, yes, but it was still recognizable on the 11/20...
https://github.com/jserv/unix-v1
> unix developed on 11/20 with 20 on panel or
machine that just said pdp/11?
Based on comments from Ken Thompson at his keynote at VCF East this
year, just "PDP-11" (he specifically asked if anyone in the audience
had ever touched _that_ version, no "/20").
The three rings or 3 execution levels were not
supported on the
original machine.
Sure but v1/v2 UNIX was a lot simpler than v5.
-ethan
20 Jun
20 Jun
6:50 a.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On 6/19/19 10:20 PM, Ethan Dicks via cctalk wrote:
On Wed, Jun 19, 2019 at 9:23 PM Bob Smith via cctalk
<cctalk at classiccmp.org> wrote:
V6 will run on an LSI-11/02 with 28KW of memory.
bill
My recollection, Unix on the 11 started with the
20 but because of the
limited capabilties, it really was done on the /45.
The good stuff, yes, but it was still recognizable on the 11/20...
https://github.com/jserv/unix-v1
> unix developed on 11/20 with 20 on panel or
machine that just said pdp/11?
Based on comments from Ken Thompson at his keynote at VCF East this
year, just "PDP-11" (he specifically asked if anyone in the audience
had ever touched _that_ version, no "/20").
The three rings or 3 execution levels were not
supported on the
original machine.
Sure but v1/v2 UNIX was a lot simpler than v5.
9 a.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On 6/20/19 8:58 AM, Jon Elson via cctalk wrote:
On 06/20/2019 08:50 AM, Bill Gunshannon via cctalk
wrote:
Mini-Unix, the non-mmu version.
V6 will run on an LSI-11/02 with 28KW of memory.
28 KW is 56 KBytes, which is the max on most non-MMU CPUs.
Jon 
2:55 p.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On 6/20/2019 11:00 AM, Al Kossow via cctalk wrote:
On 6/20/19 8:58 AM, Jon Elson via cctalk wrote:
Which does also run on a /20, though I have never tried it.
On 06/20/2019 08:50 AM, Bill Gunshannon via
cctalk wrote:
Mini-Unix, the non-mmu version.
V6 will run on an LSI-11/02 with 28KW of memory.
28 KW is 56 KBytes, which is the max on most non-MMU CPUs.
Jon 
2:57 p.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On Thu, Jun 20, 2019 at 2:56 PM Jay Jaeger via cctalk <cctalk at classiccmp.org>
wrote:
On 6/20/2019 11:00 AM, Al Kossow via cctalk wrote:
Mini-Unix is fairly notable in that it doesn't require EIS; so it'll run on
an 11/05 as well. Not fast, mind you...
- Josh
On 6/20/19 8:58 AM, Jon Elson via cctalk wrote:
Which does also run on a /20, though I have never tried it.
On 06/20/2019 08:50 AM, Bill Gunshannon via
cctalk wrote:
Mini-Unix, the non-mmu version.
V6 will run on an LSI-11/02 with 28KW of memory.
28 KW is 56 KBytes, which is the max on most non-MMU CPUs.
Jon 
2:31 p.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On 6/20/2019 9:58 AM, Jon Elson via cctalk wrote:
On 06/20/2019 08:50 AM, Bill Gunshannon via cctalk
wrote:
Don't you ALL wish the the 11 was 18 bits. Not looking at REAL
11 but the schematic, two bits would have not been too hard to add.
Ben.
V6 will run on an LSI-11/02 with 28KW of memory.
28 KW is 56 KBytes, which is the max on most non-MMU CPUs.
Jon
5:20 p.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On Jun 20, 2019, at 5:31 PM, ben via cctalk <cctalk
at classiccmp.org> wrote:
On 6/20/2019 9:58 AM, Jon Elson via cctalk wrote:
You mean like a PDP-7 (the first Unix machine)?
paul
On 06/20/2019 08:50 AM, Bill Gunshannon via
cctalk wrote:
Don't you ALL wish the the 11 was 18 bits. Not looking at REAL
11 but the schematic, two bits would have not been too hard to add.
V6 will run on an LSI-11/02 with 28KW of memory.
28 KW is 56 KBytes, which is the max on most non-MMU CPUs.
Jon
21 Jun
21 Jun
2:01 a.m.
New subject: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?
On 6/20/2019 6:20 PM, Paul Koning wrote:
Nope, the * PDP 11 * from 1971.
It used if I remember right a 16x1 RAM and a 1 bit ADDER was heart of
the ALU. 4 bit wide TTL came out in the next version of the 11.
Reading the development notes for the PDP 11 (bitsavers) makes
interesting reading on just what was planned back then.
XV6 is teaching unix (2006) I just found out about. We now
all can upgrade from PDP11's with 56K of core to PC with 128KB of memory
:) .
Ben.
Don't you
ALL wish the the 11 was 18 bits. Not looking at REAL
11 but the schematic, two bits would have not been too hard to add.
You mean like a PDP-7 (the first Unix machine)? paul
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11 comments
10 participants
participants (10)
-
aek＠bitsavers.org -
bfranchuk＠jetnet.ab.ca -
bill.gunshannon＠hotmail.com -
bobsmithofd＠gmail.com -
couryhouse＠aol.com -
cube1＠charter.net -
derschjo＠gmail.com -
elson＠pico-systems.com -
ethan.dicks＠gmail.com -
paulkoning＠comcast.net