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<blockquote type="cite">Timothe,
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<div>This list that you published an excerpt from, it it available
online somewhere? </div>
<div><br>
</div>
<div>I am curious to understand what the DEC options NH14 and TR01
were?</div>
<div><br>
</div>
<div>Are they listed there as well?</div>
<div><br>
</div>
</blockquote>
<br>
<br>
<img src="cid:part1.01020100.09050405@ieee.org" alt=""><br>
<br>
I don't have info on the NH04...but we know that N* is "pulse height
analysis equipment". But if we look elsewhere, we<br>
find:<br>
<img src="cid:part2.00040106.08090001@ieee.org" alt=""><br>
<br>
So the NH14 is a dual 12-bit Analog-Digital converter, built by
DEC's computer special systems group in Merrimack, NH.<br>
Probably designed for the PDP-9 and used on the PDP-15; the DW15
would be an I/O Bus interface module.<br>
<br>
API probably isn't what you think. It's likely "Automatic Program
Interrupt" - that is, you can get an interrupt on<br>
conversion done rather than polling.<br>
<br>
The TR01 isn't listed, but it would be a magtape controller or
transport. Probably the latter. The TR02 went EOL in 1973, so<br>
the TR01 would be earlier than that. From the age, likely 7-track,
perhaps 200 BPI. But those are guesses. <br>
<br>
Note that a DEC part number is a 4-2 or 2-5-2 format. The suffix
can make a big difference, even if it's blank.<br>
<br>
I didn't work with either device mentioned.<br>
<br>
I don't remember where I found my copies of the OML. (Though I
sometimes wish I'd saved the unedited copies that I once had.)<br>
<br>
<br>
<div class="moz-cite-prefix">On 27-Feb-16 16:24, Mattis Lind wrote:<br>
</div>
<blockquote
cite="mid:CABr82SJENEfNZxDE1z6AoSXV-2OSLKd53GSVM1iM3tDdGgemug@mail.gmail.com"
type="cite">
<div dir="ltr">Timothe,
<div><br>
</div>
<div>
<div><br>
</div>
<div>This list that you published an excerpt from, it it
available online somewhere? </div>
<div><br>
</div>
<div>I am curious to understand what the DEC options NH14 and
TR01 were?</div>
<div><br>
</div>
<div>Are they listed there as well?</div>
<div><br>
</div>
<div>/Mattis</div>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-02-27 21:27 GMT+01:00 Timothe Litt
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:litt@ieee.org" target="_blank">litt@ieee.org</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div class="h5">
<div>On 27-Feb-16 14:19, Bob Supnik wrote:<br>
</div>
<blockquote type="cite">Thanks, Tim. Burroughs made a
lot of fixed head disks at the time. I can't
identify the model, but the IA2 (see page 7-4 of the
B6700 Hardware Handbook, on bitsavers) seems like a
possibility. It has 7552 sectors per surface vs
8000, but Burroughs sectors were longer than DEC
sectors (180 x 8b = 1440b vs 32 x 36b = 1152b), so
perhaps DEC format had more sectors per track. <br>
<br>
While the 18b- and 36b-groups used the same disk
buyout, they went to different vendors for drums.
The Type 24 and RM09 came from Vermont Research; the
RM10B from Bryant. <br>
<br>
/Bob <br>
<br>
On 2/27/2016 12:00 PM, <a moz-do-not-send="true"
href="mailto:simh-request@trailing-edge.com"
target="_blank">simh-request@trailing-edge.com</a>
wrote: <br>
<blockquote type="cite">Message: 3 <br>
Date: Sat, 27 Feb 2016 09:31:59 -0500 <br>
From: Timothe Litt<a moz-do-not-send="true"
href="mailto:litt@ieee.org" target="_blank"><litt@ieee.org></a>
<br>
<a moz-do-not-send="true"
href="mailto:To:simh@trailing-edge.com"
target="_blank">To:simh@trailing-edge.com</a> <br>
Subject: Re: [Simh] RB09 == RD10 <br>
Message-ID:<a moz-do-not-send="true"
href="mailto:56D1B35F.3040206@ieee.org"
target="_blank"><56D1B35F.3040206@ieee.org></a>
<br>
Content-Type: text/plain; charset="utf-8" <br>
<br>
On 27-Feb-16 08:23, Bob Supnik wrote: <br>
<blockquote type="cite">>Max Burnet gave me a
pointer from some old price lists, showing that
<br>
>the RD10 had very similar specs to the RB09.
The RC10 manual confirms <br>
>it - same BCD addressing of tracks and
sectors, same number of tracks, <br>
>same sectors per track, same words per
sector (32 x 36b for the RD10, <br>
>64 x 18b for the RB09). So the "RD10s" on
some PDP-9s in the services <br>
>listing are actually RB09s, at least at the
drive level. <br>
> <br>
>I still don't know what an RC09 is.
Alternate name for an RB09? <br>
>Half-sized variant? Another mystery is who
made the actual drive <br>
>mechanism. It precedes DEC's first
internally designed fixed head <br>
>disk, the RF09/RS09, by two years. <br>
</blockquote>
According to the option module list, the RC09 is a
"Control for <br>
Burroughs Disk" The design engineer was J.
Milton. <br>
<br>
That makes sense, as the RC10 was the PDP10
controller for disk and drums. <br>
<br>
FWIW, Family members: the RD10 was made by
Burroughs. The RM10B drum <br>
was by Bryant. SW documentation was removed from
the PDP-10 doc set in <br>
the 80s, but as I wrote previously, I believe the
tech manuals are on <br>
the FS microfiche. The section with the red
stripes on top. <br>
<br>
The drums were notoriously unreliable. Especially
the ones in the Mill, <br>
though things improved when someone realized that
they tended to crash <br>
when semitrailers bumped into the loading dock
above them.... <br>
</blockquote>
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I think this is confusing due to the hierarchy/bundling.
It's not complicated,<br>
I think :-)<br>
<br>
Summary:<br>
<br>
RB09 = RC09 + RD10. (-A for 50 HZ) <br>
Probably salable part number.<br>
<br>
RC09 = Controller <br>
Probably not salable, except perhaps as FS
spare.<br>
<br>
RD10 = Drive<br>
Probably not salable, ditto<br>
<br>
FS probably used the controller on the contract rather
than the bundle. They did that<br>
a lot. Remember that these early drives each had a
dedicated controller. Later (e.g. Massbus<br>
disks), they'd be listed separately. Or the first drive +
controller had a part number,<br>
add-on drives would be listed separately. But in this
timeframe, which they picked<br>
was arbitrary. <br>
<br>
FWIW, in this case, the FS list indicates that the RC09
shipped much later than the rest<br>
of the system. The system shipped in july 65; the RC09 in
jan 69.<br>
<br>
One other bit of trivia from the OML - the RB/RC09 went
status 6 in July of 71. (6 = Obsolete, but<br>
can still be built.) "TPL" = "traditional products line";
I think they were in Salem NH at that time.<br>
<br>
Supporting data:<br>
<br>
The (1974) OML edition that I have lists the RB/RC09 &
RD10. The 'C' would indicate controller<br>
(thanks to Dick Best's semantic part number scheme.) I
would guess that RB decodes to<br>
"Rotating magnetic memory", Burroughs" :-) The coding got
more creative as time went<br>
on as the "good" letters were used by early products.
(E.g. RK for "Rotating Kartridge disk")<br>
<br>
There is also an entry for the RB09 and RB09-A - listed as
"RC09 & RD10" and "RC09 & RD10-A" <br>
The -A are 50 Hz versions. <br>
<br>
There are RC controllers for the 7, 9, 10 & 11. (The
RC11 references the RS64 "65K 16 bit DEC DISK".)<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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