wonderful resource for
anyone to use as we continue to evolve the technology provided by the SIMH
system.
The SIMH Steering Group
Clem Cole
Richard Cornwell
Paul Koning
Timothe Litt
Seth Morabito
Bob Supnik
ᐧ
plemented in some VAX, and if yes, what the fix might look like.
>
> I'm reasonably comfortable assuming that the somewhat-related "Meltdown"
> vulnerability doesn't show up in VAX, because that issue requires a
> designer who'd implement page access checking in a
Paul - be careful. All CPU's post the IBM AGS that used branch prediction
are suspect. Russ Robelen (who was the 360/50 lead, worked on 360/90 and
lead AGS) has the speculative executing patent. I tweaked him when it all
came out and said - look at what you did.
What Russ and team are great i
I took most of this off line, but I'll try to close down the discussion, so
we can get back to TUHS history.
Please be careful of your wording as it is easy to get confused
particularly if you never used the original 1/2" tape system you might not
understand the actual terms. The term for reading
William Pechter wrote:
> DEC Tape II was the serial driven TU58.
> The TK50 was CompacTape or something like that. It was the predecessor of
> a number of square tapes...
>
> See DLT on Wikipedia https://en.m.wikipedia.org/wiki/Digital_Linear_Tape
>
> Bill
>
> -----Orig
On Tue, Oct 16, 2018 at 12:57 PM Paul Winalski
wrote:
> The block size is almost certainly 512 bytes.
>
Which is what I said - the block siize is set by the HW.
But ... the issue is trying to get the TK-50 to stream. Hence the
traditional unix: dd ibs=64K obs=XXX | tar xvfp - trick.
This will
#$%^ - they >>weren't<< like DECtape from a reliability standpoint ...
ᐧ
On Mon, Oct 15, 2018 at 5:00 PM Clem Cole wrote:
> Be careful, TK-50 is different than 9-track. It's a streamer tape like
> QIC, 4mm and 8mm. The blocking is done under the covers by the HW
Be careful, TK-50 is different than 9-track. It's a streamer tape like
QIC, 4mm and 8mm. The blocking is done under the covers by the HW and the
blovk size if just how a DMA is done. I recommend that you pre-fetch the
read with dd or double-dd setting ibs=64k, obs=20b and conv=sync and pipe
the
On Tue, Oct 25, 2016 at 10:16 AM, Noel Chiappa
wrote:
> Is there any interest in all this? If so, I can put together a web page
> with
> the V6-verion VTServer source, along with the modified V6 serial line stuff
> (including a short description of the extended stty/gtty interface), etc.
>
Yes p
below...
On Fri, Sep 25, 2015 at 1:00 PM, wrote:
> - Forwarded message --
> From: Chuck Guzis
>
> http://www.eah-jena.de/~kleine/history/languages/ansi-x3dot9
> -1966-Fortran66.pdf
>
> The surprising thing is how spare the ANSI document is: 36 pages,
> including appendices.
>
On Mon, Aug 10, 2015 at 1:00 PM, wrote:
> From: Brent Hilpert
>
> There was also AlgolW, supported on MTS.
>
> As MTS was being mentioned earlier I was going to ask if anyone knew
> whether the AlgolW compiler was included in the available distribution.
>
The sources are available - they were
On Sun, Jul 5, 2015 at 1:00 PM, wrote:
> Having the primary CPU just stall, and have the second CPU normally just
> be idle until a page fault happens on the other hand is something I can see
> how it could be done.
Indeed that is exactly how it was done on the Masscomp MC-500 and I
believe th
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