[TUHS] PDP-11/23+ just restored :)

[TUHS] PDP-11/23+ just restored :)

[asbesto]

Hi there, 

we just restored our PDP-11/23+ rebulding a new PSU around a
normal PC PSU and creating the real time clock needed for some
OS.

we're wondering about what UNIX can eventually run on it :)

http://museo.freaknet.org/en/restauro-pdp1123plus/


bye, 
Gabriele


-- 
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[TUHS] PDP-11/23+ just restored :)

[Dave Horsfall]

On Sun, 13 Sep 2015, asbesto wrote:

> we just restored our PDP-11/23+ rebulding a new PSU around a normal PC 
> PSU and creating the real time clock needed for some OS.
> 
> we're wondering about what UNIX can eventually run on it :)
> 
> http://museo.freaknet.org/en/restauro-pdp1123plus/

11/23?  Should be able to run V6, but not V7 (no sep/id space).  Does it 
have the FPU?  Those variants were damned rare (here in Oz, at least).

The AUUG archives ought to have stuff on it (cough, cough; I ported Unix 
to the thing).

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."
 I'll support shark-culling when they have been observed walking on dry land.

[TUHS] PDP-11/23+ just restored :)

[Pete Turnbull]

On 13/09/2015 10:39, asbesto wrote:
> we just restored our PDP-11/23+ rebulding a new PSU around a
> normal PC PSU and creating the real time clock needed for some
> OS.
>
> we're wondering about what UNIX can eventually run on it :)

You could run 7th Edition; I run that on my 11/23+.  You'd need an 11/73 
or another processor with split I&D space for anything later.

I'm curious as to why you needed a 60Hz clock when your line frequency 
is 50Hz?  All the DEC O/S can run with a 50Hz, as can UNIX.

-- 
Pete

Pete Turnbull

[TUHS] PDP-11/23+ just restored :)

[Pete Turnbull]

On 13/09/2015 11:23, Dave Horsfall wrote:

> 11/23?  Should be able to run V6, but not V7 (no sep/id space).  Does it
> have the FPU?  Those variants were damned rare (here in Oz, at least).

No, you don't need split I&D for 7th Edition, which runs just fine on 
mine.  As demonstrated at the DEC Legacy Event in Windermere a few 
months ago.

http://www.wickensonline.co.uk/declegacy/

See, specifically, the second and third pictures in the 2015 gallery
http://wickensonline.co.uk/declegacy/image/tid/13 and
http://wickensonline.co.uk/declegacy/node/267

-- 
Pete

Pete Turnbull

[TUHS] PDP-11/23+ just restored :)

[Dave Horsfall]

On Sun, 13 Sep 2015, Pete Turnbull wrote:

> > 11/23?  Should be able to run V6, but not V7 (no sep/id space).  Does 
> > it have the FPU?  Those variants were damned rare (here in Oz, at 
> > least).
> 
> No, you don't need split I&D for 7th Edition, which runs just fine on 
> mine. As demonstrated at the DEC Legacy Event in Windermere a few months 
> ago.

Ah; I only saw the 18-bit version, not the 22-bit version...

Thanks.

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."
 I'll support shark-culling when they have been observed walking on dry land.

[TUHS] PDP-11/23+ just restored :)

[John Cowan]

Dave Horsfall scripsit:

> 11/23?  Should be able to run V6, but not V7 (no sep/id space).   

More precisely, it won't be able to run executables with a magic number
of 0411, which demands split I/D.  I don't know offhand which those were.
But split I/D support goes back to V5, according to a.out.h.

-- 
John Cowan          http://www.ccil.org/~cowan        cowan at ccil.org
Does anybody want any flotsam? / I've gotsam.
Does anybody want any jetsam? / I can getsam.
        --Ogden Nash, No Doctors Today, Thank You

[TUHS] PDP-11/23+ just restored :)

[asbesto]

Sun, Sep 13, 2015 at 11:23:35AM +0100, Pete Turnbull wrote:

> I'm curious as to why you needed a 60Hz clock when your line
> frequency is 50Hz?  All the DEC O/S can run with a 50Hz, as can
> UNIX.

oh well, it was just a choice :)

-- 
[ ::::::::: 73 de IW9HGS : http://freaknet.org/asbesto ::::::::::: ]
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