First off, my apologies to the pdp-8 aficionados on the list. While I used
8's back in the day there's a lot I don't know about them.
I'd like to understand *exactly* what hardware tss/8 needs to run.
My understanding is that it will only run on an 8/I with the following
options
KT08/I timesharing option
MC8/I memory option
KE8/I multiply divide option
I'm curious because I wrote up a simple pdp-8 verilog description which
runs FOCAL and I think it would be fun to run tss/8 also.
I'd like some pointers to documents which describe the options needed and
details about them.
Certainly all of the IF/DF extended memory is needed, since last time I ran
tss/8 we had 32k. I'm guessing that this is covered in the MC8/I documents.
I'm curious if the KE8/I is the same as the EAE.
And I've never seen a description the KT08, all though I can guess what
it does (traps any 6xxx as well as halt and switch register access at
a minimum, but anything else?)
Also, if there is a better list for this sort of question please let me know.
I've never read alt.pdp8.whoknowswhat but maybe I should.
-brad
All:
I just came across a Tandy printer (DMP105, 26-1276) and I'm
having problems finding a ribbon for it. The OEM replacement catalog number
is 26-1288 which I believe can be used on the DMP-106, too. I'm wondering if
anyone has knows of a suitable replacement or a consistent source for dot
matrix printer ribbons for "classic" printers. The ribbon itself looks to be
in good condition so I guess I could re-ink it, in which case, what's the
best ink for that?
Thanks.
Rich
Rich Cini
Collector of classic computers
Lead engineer, Altair32 Emulator
Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/>
http://highgate.comm.sfu.ca/~rcini/classiccmp/
Web site: <http://www.altair32.com/> http://www.altair32.com/
/***************************************************/
I know the "right" answer to this one--you drive 220/330 ohm
terminated loads with 7438-type OC drivers. But, going a bit afield
>from "correct", can one drive a single 220/330 ohm terminated load at
the end of a 3m length of ribbon cable at 1 MHz using plain old totem-
pole STTL output? How about an LSTTL or HCT totem-pole driver?
You can assume that the receiver is a 74LS14.
Thanks,
Chuck
Hi Folks,
Am I imagining things or was there a discussion very recently about Texas
Instruments' little baby? Whilst browsing ebay uk last week I found one
that was NIB so naturally I had to have it :) The seller works 5 minutes
>from my weekend home so it was even better.
Pictures will be up once I've taken them. Serial is #384 so does anyone
know how many escaped from Ti Labs? Or did they use a random serial
numbering scheme.....
Ta,
--
adrian/witchy
Binary Dinosaurs creator/curator
www.binarydinosaurs.co.uk - the UKs biggest home computer collection?
I am not a Coco collector, but I noticed this on the local (Montreal)
Craigslist, and figured it might be of interest to people here. Note,
I have no connection to the seller.
http://montreal.craigslist.org/sys/243510966.html
Joe.
Just wanted to check before I toss them :
I have a 5V 25A and a +/- 15V 3A linear powersupply that were part of
some CDC machine ( early seventies i guess ). If anyone needs them...
Location : Zurich Switzerland
Jos Dreesen
>
>Subject: Re: Paper tape supply, was Re: paper tape for GNT 4601
> From: David Griffith <dgriffi at cs.csubak.edu>
> Date: Sat, 02 Dec 2006 15:54:02 -0800 (PST)
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>
>Sidenote: how hard would it be to make a paper tape reader and punch from
>scratch? The idea is to have a lightweight unit for playing with my
>SBC6120 and perhaps Altair reissue/clone (if and when I get one).
>
A reader is fairly simple matter lookup the OAE [oliver audio engineering]
reader design.
However the punch is a mechanical project. The only kitted one was the
Heath (H10 I think) punch reader and that was not very reliable or light.
Allison
> The whole line of
> 20 years of IBM muscle computers is basically gone. The same is true
> for the Burroughs and Univac machines of the same era.
It is MUCH worse for Burroughs and Univac. IBM was sold in such high numbers
that the probability of some surviving was higher. Both Burroughs and Univac
had an active "scorched earth" policies for systems in the field to keep
them out of the hands of resellers. I don't know of any Burroughs 5xxx/6xxx
systems or Univac 1100's that still exist.
John's Univac III is about the biggest old Univac system that I know of.
There is also a disproportionate number of large scientific computers that
have survived vs business systems. There much fewer in CHM's collection.
I've been selling some stuff on ebay and have found a number of people who
aren't aware that this listserver exists. Basically, I'm referring them to the
ClassicCmp website and they can view the archives and decide if they want to
join. It was eyeopening to see that people who have a big interest in this stuff
weren't aware of this listserver!
I wonder if a link to the Vintage Computer Marketplace would be appropriate to
put on the ClassicCmp home page?
I was recenlty given a copy of the "A Quick Reference to HP Time-Shared
BASIC" Printed 9/1969. It's a pamphlet-sized doc. If anyone would like a
copy and it does not already exist on the Internet I will make a PDF and
put it up on my web site. The system associated with the guide is the
Hewlet-Packard 2000A.
Bill D
