On 7/28/17 4:56 AM, Henk Gooijen via cctalk wrote:
> I knew most of the commands (starting with @) plus the options by heart,
@ == "Master Space"
UW-Milwaukee's first big system was a Univac 1106, which was traded in for
an 1100/80 after I left. Just picked up some operator manuals that came o
On 7/28/17 8:10 AM, Al Kossow via cctalk wrote:
> I think one of the people who designed it has popped up on vcfed.org but it
> isn't
> coming up in a search.
here is the thread
https://groups.google.com/forum/#!topic/comp.os.cpm/yCo7ptRjmeI
On 7/28/17 10:02 AM, Dominique Carlier via cctalk wrote:
> Maybe I'm wrong, I always believed that the J3 connector was an RS-232 port.
> Here it is:
>
> http://www.zeltrax.com/classiccmp_forum/04.jpg
That also shows there is a firmware cartridge :-(
On 7/28/17 10:49 AM, Dominique Carlier via cctalk wrote:
>> That also shows there is a firmware cartridge :-(
>>
>
> Is it specifically a bad thing from your point of view ? Why ? Do you think
> eproms could be damaged over the years?
it will just make the firmware more difficult to dump
http://www.tape-replacement.com/support/lucent-at-t-5ess/
I've seen M4 Data 9914V drives configured for 48v and At&T part numbers
https://en.wikipedia.org/wiki/5ESS_Switching_System
On 7/30/17 11:53 AM, Pete Lancashire via cctalk wrote:
> Anyone know the spec s for the tape drives in a ESS5 exc
On 7/31/17 9:53 AM, william degnan via cctalk wrote:
> DE-Oxit?
>
over an entire board?
seems like a really expensive solution to a simple problem
has anyone ever determined what the real active ingredient is in that stuff?
On 9/29/11 6:58 AM, Shoppa, Tim wrote:
> Probably from an Ontel OP-1 system in the late 70's or very early 80's.
>
> The OP-1 was somewhere between a configurable terminal and a dedicated word
> processor depending on firmware and peripherals installed. Peripherals did
> include 8" floppies in
They canceled my order as well, just after sending me a message wondering if I
wanted the keyboard
I hope they just relist it
On the other hand, this isn't the same as your unit, the connectors on the back
are in a different
place and I don't see the 9 pin keyboard connector so this may be a co
On 8/1/17 8:41 AM, Al Kossow via cctalk wrote:
> I hope they just relist it
jackass relisted it for $1000, still w/o keyboard
www.ebay.com/itm/142462575631
Another stillborn project?
I don't see any software to make the Beaglebone talk Unibus
On 8/1/17 9:39 AM, Toby Thain via cctalk wrote:
> I just saw this a few minutes ago...
>
> https://trmm.net/Unibus
>
>
> --Toby
On 8/1/17 10:49 AM, Noel Chiappa via cctalk wrote:
> Any guesses as to what's going on?
sellers not getting the prices they wanted.
On 8/1/17 11:25 AM, jim stephens via cctalk wrote:
>
>
> I would not void a closed
> sale either if I couldn't help it. But that's just me.
Like I say most people agreed up until this year.
I've had more bad deals or people just canceling my bid and closing
auctions with 'item no longer avail
On 8/1/17 10:36 PM, Ulrich Tagge via cctalk wrote:
> Looks like I was wrongly under the impression, that there is no way to
> reformat, disks to work in an RX02.
There is no way to low-level format disks on a DEC RX01 or RX02. The hardware
doesn't support it in the controller
inside the DEC d
nk or MFM disk."
So you have to have a single-density IBM formatted disk which the RX02 can
convert
On 8/2/17 7:05 AM, Christian Corti via cctalk wrote:
> On Wed, 2 Aug 2017, Al Kossow wrote:
>> There is no way to low-level format disks on a DEC RX01 or RX02. The
>> hardw
correct
that was how I've always low-level formatted RX02s, using 3rd party controllers.
On 8/2/17 9:46 AM, Jay West wrote:
> Eric (via AEK) wrote
> --
> "RX02 format uses single-density address fields even for double density. The
> RX02 can "reformat" standard single-density i
On 8/3/17 7:10 AM, Rick Bensene via cctalk wrote:
> I've found much the same with ESDI drives...they tend to die just sitting,
> and it's not stiction that seems to be the culprit...they simply quit working.
That isn't good news. I still have about 100 drives that came out of Apollo's
develop
On 8/4/17 7:07 AM, Christian Corti via cctalk wrote:
> If you really want a non-rotating media, then I
> suggest that you use SATA SSDs.
Can you actually buy SATA PHYs in small quantities now
or even SATA to PATA bridges?
I remember looking for them in the past and either not
being able to buy
On 8/3/17 2:45 PM, Curious Marc via cctech wrote:
> Wow, that's mighty impressive. I knew about your FPGA 360/65 project but had
> never seen your website before.
There is also a simulation book in the works in cooperation with 'vaxman'
http://www.analogmuseum.org/english/about_me/
https://ww
On 8/4/17 7:37 AM, Phil Blundell via cctalk wrote:
> ASSPs like TI's TUSB9260
which turns up a big fat nothing in a web search
is there a data sheet somewhere?
the 6250 is a SATA 2 to USB using an 8051 core, but I suspect you
can't get the code for that.
one of the common pata-sata bridges fr
On 8/4/17 7:44 AM, systems_glitch via cctalk wrote:
> There are indeed cheap SATA -> IDE bridge ICs.
yup, I'm running around 50 of them in my upgraded XServe RAIDs
when I converted to 1tb 2.5" SATA-2 drives in 2015.
the cheap bridges are actually based on the 20330
you can find a real data sheet if you search for JM20330_datasheet_v2.5.pdf
hard enough
some discussions of their use with ssd trim
https://forum.thinkpads.com//viewtopic.php?t=115329
On 8/4/17 8:08 AM, Al Kossow via cctalk wrote:
>
>
https://halsoft.wordpress.com/2008/06/02/the-next-generation-key-punch-the-ibm-5280/
http://www.computerhistory.org/collections/catalog/102675777
i'll see what's there..
On 8/4/17 9:04 AM, Jason T via cctalk wrote:
> On Fri, Aug 4, 2017 at 7:15 AM, Christian Corti via cctalk
> wrote:
>> So, we
On 8/4/17 9:20 AM, Al Kossow via cctalk wrote:
> https://halsoft.wordpress.com/2008/06/02/the-next-generation-key-punch-the-ibm-5280/
>
> http://www.computerhistory.org/collections/catalog/102675777
>
> i'll see what's there..
>
weird, it doesn't look like
On 8/4/17 10:34 AM, Phil Blundell via cctalk wrote:
> On Fri, 2017-08-04 at 09:17 -0800, David Bridgham via cctalk wrote:
>>
> So my question is: do industrial SD cards exist?
>
> Yes they do. Most of the big card manufacturers have an "industrial"
> range, for example:
>
> https://www.sandisk
comm utils, and DE/RPG
I'll see if I can get to those this weekend.
On 8/4/17 9:23 AM, Al Kossow via cctalk wrote:
>
>
> On 8/4/17 9:20 AM, Al Kossow via cctalk wrote:
>> https://halsoft.wordpress.com/2008/06/02/the-next-generation-key-punch-the-ibm-5280/
>>
>> http:
On 8/4/17 11:14 AM, Warner Losh via cctalk wrote:
> most SD cards can easily handle 100-200 writes
The issue would be things like the swap partition on a unix disk
or whatever the equivalent is under RSX
and we do have a 5285
http://www.computerhistory.org/collections/catalog/102633515
I need to see if that floppy in the picture is still in the left-hand drive
On 8/4/17 11:34 AM, Al Kossow via cctalk wrote:
> I just uploaded GA21-9353-1_5280_Functions_Reference_Manual_Apr81 w/o OCR
&
On 8/4/17 9:23 AM, Al Kossow via cctalk wrote:
> weird, it doesn't look like I scanned these. I thought I did..
I did, it's under "528x" but OS X collation puts it with 3 digit part numbers
(grrr..)
I just uploaded a bunch of ACS 8600 documentation to bitsavers, but the Users
manual I
have is preliminary from 1982. Does anyone have a later version that has the
missing
chapters (esp the schematics Appendix)?
the terminals pop up on eBay every so often. I picked up a couple in poor
physical
condition as donor machines for the one clean one I've found
On 8/5/17 10:56 PM, Eric Smith via cctalk wrote:
> With Intel devices, there is a special "seed module" and procedure that can
> be used to recover bubb
On 8/7/17 7:08 AM, william degnan via cctalk wrote:
> I agree. I keep meaning to archive my software
dumping the firmware and character generator would be a good thing to do as well
On 8/9/17 8:32 AM, Josh Dersch via cctalk wrote:
> On Wed, Aug 9, 2017 at 8:00 AM, Rod Smallwood via cctalk <
> cctalk@classiccmp.org> wrote:
>
>> Hi Lis
>>
>> It looks like RX8 SEL is not asserted due to the device address not being
>> set up on the DIP switches.
>>
>> Anybody know what they sh
On 8/9/17 9:23 AM, Josh Dersch wrote:
> The manual I linked contains configuration details for the RX01, RX8E and
> RX11. See page 2-10.
yea, just pulled the manual and realized that, sorry.
it is device code 75
http://homepage.divms.uiowa.edu/~jones/pdp8/man/rx01.html
On 8/9/17 9:24 AM, Al Kossow via cctalk wrote:
>
>
> On 8/9/17 9:23 AM, Josh Dersch wrote:
>
>> The manual I linked contains configuration details for the RX01, RX8E and
>> RX11. Se
On 8/10/17 1:29 AM, Christian Corti via cctalk wrote:
> On Wed, 9 Aug 2017, Chuck Guzis wrote:
>> I'll try again--it doesn't matter if the Qume 242 (I've got one)
I have a pretty strong dislike for the Qume drives, the 242 in particular
seems to like to eat the top side of media.
The design of
On 8/10/17 9:25 AM, camiel.vanderhoeven--- via cctalk wrote:
> My workhorse 8" drives are some Ye-Data half-height ones. I still have about
> a dozen of them as NOS.
Glad they work out for you. Fairlight people like them, so I've been giving
them away to them.
I wont' try to recover anything
www.vcfed.org/forum/showthread.php?55277-Selecting-an-8-quot-floppy-drive
for someone else's opinion of the Qume PsOS
On 8/10/17 9:57 AM, Al Kossow via cctalk wrote:
>
>
> On 8/10/17 9:25 AM, camiel.vanderhoeven--- via cctalk wrote:
>
>> My workhorse 8" drives
www.ebay.com/itm/263105671822
If any of the people who bid against me on these are on the list,
here are the disk images.
http://bitsavers.trailing-edge.com/bits/Altos/Altos_8000_Family_disk_images/8600_Floppy_Images_Aug2017/
You're welcome.
do you have the software?
On 8/10/17 2:21 PM, Gary McGill via cctalk wrote:
> Anyone interested in Emerald 3x twin emulation? This is a card for a PC,
> with software and cable to connect from card to 3x twinax cable, to allow a
> PC to emulate a 5251 terminal on a 3x computer.
>
> Email off lis
On 8/11/17 5:40 AM, Dominique Carlier via cctalk wrote:
> Hi all,
>
> I continued my investigations about the power supply if the 8406 subsystem.
> Here is what I observe:
>
> With the PSU in charge, I mean with a disk drive connected but without the
> +24V :
> +5V -5V +12V -12V: OK
> If I con
On 8/11/17 12:12 PM, Mattis Lind via cctalk wrote:
> There is a very nice MFM-emulator by David Gesswein.
It works very well. I've dumped several hundred 5" drives with it
which resulted in added support for many different controllers in
his decoder.
8" shugart interface drives are rising on t
On 8/12/17 3:21 AM, Mattis Lind via cctalk wrote:
OK. There haven't been that many replies. The other route is to try to
reverse engineer the boards.
If it were me, I'd just do a new layout using parts you can still buy today.
On 8/11/17 10:58 AM, Marvin Johnston via cctalk wrote:
I have probably at least 10,000 floppy disks of many flavors (formats,
hard sector, soft sector, various TPI and Tracks/disk, 3.5"/5.25?/8",
etc.)
I've been thinking about this, and you need to organize what you want to
read and get this d
On 8/12/17 6:45 AM, Dominique Carlier via cctalk wrote:
> I did not know this type of case for capacitors
>
> http://www.zeltrax.com/classiccmp_forum/uts40/M2894-63_board03.jpg
the black one in the lower left
it is a tantalum, which are known to short, try removing them
just sold for $1600
http://www.ebay.com/itm/Computer-Connections-Gary-Kildall-Father-of-Personal-Computer-Software-/182705906183
https://motherboard.vice.com/en_us/article/kzakkn/nasa-destroyed-hundreds-of-mystery-tapes-found-in-a-dead-mans-basement-apollo-era
well, a metal scrapper contacted NASA, so I would imagine with him.
at least we know now a little more about where the FOIA request came from
On 8/13/17 4:01 PM,
On 8/13/17 6:34 PM, Steve Malikoff via cctalk wrote:
> Anyway I was wondering if it would be possible to get some accurate and
> detailed scale measurements of the Alto chorded keyset?
I have one that I am cleaning right now, so it is disassembled.
I'll put some info up soon.
http://www.retrotechnology.com/herbs_stuff/drive.html
is more detailed than the
On 8/10/17 1:32 PM, Tom Gardner via cctalk wrote:
> Me too - great rant.
I was looking at this thread
https://forum.kryoflux.com/viewtopic.php?f=3&t=749
And they mention the data they were looking at has AGC applied.
I didn't know any floppies used AGC in their read channel and in particular
I'm trying to find a block diagram or schematic of the logic in the Teac FD-2
On 8/16/17 11:20 AM, Tony Duell via cctalk wrote:
> But I am not so sure about AGC. I've looked at the schematics for
> some 5.25" drives and I can find no AGC circuits. Nor on the Sony
> 3.5" full-height 600rpm drives. So I would not be at all surprised if
> there was no AGC on this Teac.
I su
On 8/22/17 6:34 AM, Nick Allen via cctalk wrote:
> looking
> into Network boot with Carl, but this is not yet a possibility.
Maybe you can get one of the LCM 3mbit PCI-e cards from LCM?
On 8/22/17 8:31 AM, Al Kossow via cctalk wrote:
>
>
> On 8/22/17 6:34 AM, Nick Allen via cctalk wrote:
>> looking
>> into Network boot with Carl, but this is not yet a possibility.
>
> Maybe you can get one of the LCM 3mbit PCI-e cards from LCM?
>
I wish Ken
On 8/23/17 5:17 PM, Kevin Parker via cctalk wrote:
>
>
> http://www.theage.com.au/lifestyle/life-and-relationships/careers-and-money/women-were-the-first-computer-programmers-then-men-crowd
> ed-them-out-20170822-gy1e8r.html
"Nathan Ensmenger has observed"
he's written a whole book on the su
On 8/26/17 7:36 AM, Jay West via cctalk wrote:
> For official bitsavers mirrors, rsyncd has been turned back on (it was off
> while bitsavers was migrated to the new classiccmp server, and during
> testing).
A HUGE thank you to Jay for taking the time to do this. I had about 100,000
pages
in pd
On 8/29/17 1:46 PM, Henk Gooijen via cctalk wrote:
> Does anyone have more info about this (dusty) board:
>
> http://forum.datormuseum.se/data/87681DD5-B816-494C-AA4C-D8DB3FA35406/F7AD48D3-5450-4860-A0C9-23CB7277AC91.jpg
try dumping the eproms and see what the strings say
it looks like a Bri
o, though.
One of my background projects has been trying to collect enough parts to bring
up a Sytek broadband
network, which IBM also sold as their first PC LAN.
On 8/30/17 8:56 AM, Al Kossow via cctalk wrote:
>
>
> On 8/29/17 1:46 PM, Henk Gooijen via cctalk wrote:
>
>> Does
On 8/30/17 10:05 AM, Guy Sotomayor Jr wrote:
>> One of my background projects has been trying to collect enough parts to
>> bring up a Sytek broadband
>> network, which IBM also sold as their first PC LAN.
>
> Cool! I worked on that (at IBM). ;-)
the PC network tech ref has been up since Fe
On 9/4/17 10:27 AM, Ed via cctalk wrote:
> Macintosh Spartacus Special Bonus Steve Jobs
Each APPL buzzword is a 100x price multiplier
and 1000x if it is in .jp
On 9/5/17 11:09 PM, Chuck Guzis via cctalk wrote:
> The read results have improved considerably.
tension arm servo acting reasonably?
what style arm sensor does your drive have?
I could mail you a skew tape.
On 9/6/17 8:09 PM, Chuck Guzis via cctalk wrote:
> I'm just scratching around looking for ideas.
On 9/6/17 9:20 PM, Chuck Guzis via cctalk wrote:
> If you could spare it for a week or so, I'd be grateful. On the other
> hand, my MCU setup for the drive works great--it reads a tape and
> stashes the data as a .TAP file on an SD card.
The problem you're fighting is things are just a little m
On 9/15/17 12:36 PM, Chuck Guzis via cctalk wrote:
> I recall that he was a bit of a pompous a** on his Usenet postings, but
> you have to realize that the tenor of online conversation was very
My one interaction with him was at a Hackers. insert DRUNKEN between
pompous and a**
I had to fix a key on CHM's keyset today, so I shot a bunch of pictures while
it was apart
http://bitsavers.org/pdf/xerox/alto/Alto_5-Key_Keyset
They spent a lot of money on this. There are two castings of the same material
as the keyboard
and monitors, and two injection molded parts for the key
also a 7970E and a Kennedy 9000.
would like to have these gone before the second week in Oct if someone in
the Bay Area can pick them up and bring a couple hundred bucks with them.
i'm just about out of that space and want to get finished up.
there is also an 11/34A w FPU and cache, RK, RL and T
On 9/28/17 7:21 AM, Geoffrey Oltmans via cctalk wrote:
> Were any earlier MFM/RLL voice coil/servo
> controlled, or were they all stepper drives?
>
Most drives 40mb and up are closed-loop with dedicated
servo surfaces and many have servos that don't work any more.
Maxtor and Atasi are early ex
On 9/28/17 7:38 AM, Mike Stein via cctalk wrote:
> What is it that usually fails when the drive can't read the servo info? The
> data on the platter, or?
I've never dug that far into it beyond fiddling with Micropolis trying to
mechanically get it to
find the servo tracks and calibrate to tra
On 9/29/17 8:48 AM, Jon Elson via cctalk wrote:
> I did a few of these on a lathe years ago. It was a couple minutes job per
> reel.
you are also going to have to cut holes near the hub so that you can get a tape
started
on the takeup reel.
On 9/29/17 11:35 AM, Chuck Guzis via cctalk wrote:
> Does the little Kennedy drive have a vacuum takeup reel?
No, they are tension arm, very similar design to the 7970
I wanted to compare the mechanical design of the 9000 to the 7970
but don't know if I have the time/interest any more.
On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote:
> That "famous" QIC tape unit
Tektronix 405x tapes aren't QIC
They are 3M DC series cartridges, but the encoding is not a QIC standard.
On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote:
> Al is maintaining a set of ROM images for these machines, are tape images
> covered somewhere ?
> Do we have an fixed tape image format, as has been done with Dave's IMD for
> floppies ?
As far as I know, no one has successfully made a copy
On 10/3/17 8:29 AM, Mike Stein via cctalk wrote:
> Sounds like a similar system to what Burroughs used on their cassettes; I
> always thought that they'd be a lot easier to read than the 'normal' formats
> with embedded clock signals and always intended to try to read some of the
> tapes I ha
fyi, just noticed this is up now
http://www.computerhistory.org/events/upcoming/#yesterdays-computer-tomorrow-xerox-alto
On 10/3/17 4:50 PM, Jack Harper via cctalk wrote:
> Question: I understand that most (all?) of the '7970 drives interfaced
> through the HP-IB IEEE-488 bus.
wrong.
full stop.
On 10/3/17 5:03 PM, Alan Perry via cctalk wrote:
> Compaq and WD also worked with CDC to use the Wren II HH drive in the Compaq
> Deskpro 286. I found separate reports
> confirming the Miniscribe HDD in the Portable II and the Wren II in a Compaq
> Deskpro 386 in 1986.
I have two of the CDC d
On 10/3/17 5:39 PM, Alan Perry via cctalk wrote:
> Does CHM have the e-mail on IDE history with Bill Frank, Tony Maggio and
> Ralph Perry listed in the references?
[21] Tony Maggio and Ralph Perry email on CDC Wren II IDE Drive, December 15,
2009
Tom probably has it, I don't recall seeing i
On 10/3/17 5:33 PM, Al Kossow via cctalk wrote:
> I have two of the CDC drives, pn 94208-51 date codes 8749 and 8750
I just popped off one of the logic boards, and it is a slightly longer than
usual board with a WD1015-JM, WD11C00-JU. WD10C20B-JH-05, AND WD2010BJM05-02
On 10/3/17 7:24 PM, Chuck Guzis via cctalk wrote:
> Al has a bunch of 7970 stuff on bitsavers, but not, I think (I
> could be wrong) the manual specific to the B and C models.
I still have several tubs of HP manuals that I haven't gone through and
I remember there were several revisions for the
On 10/4/17 12:34 PM, Fred Cisin via cctalk wrote:
> Martin Bodo had great sales of just such a dead-tree database.
"The Hard Disk Bible" from Corporate Systems Center
On 9/29/17 8:56 AM, Henk Gooijen via cctalk wrote:
> Now I'm looking for 8" mag tapes/reels that will fit!
http://www.ebay.com/itm/311973810676
even a good brand.
On 10/6/17 5:59 AM, Anthony Bennett via cctalk wrote:
> If this is the machine that I am thinking of, it was made by Intel and
> marketed by them as the AS/5.
Itel
https://books.google.com/books?id=ICoe1vr9x3kC&pg=PA96&lpg=PA96&dq=itel+as/5&source=bl&ots=jsweeLSiOi&sig=biw8zHV3wpRKxD3dDrK26NB9
On 10/6/17 3:21 PM, ben via cctalk wrote:
> I have Knuth holding up my sofa.
and he hasn't started screaming yet?
I've starting to collect Hallicrafters and would be interested
On 10/7/17 9:05 AM, Noel Chiappa via cctalk wrote:
> So I have a Hallicrafters S-85 receiver which was my wife's father's, and just
> arrived (he passed away, and they are cleaning out his basement):
>
> http://ana-3.lcs.mit.edu/~jn
On 10/7/17 11:47 AM, Al Kossow via cctalk wrote:
> I've starting to collect Hallicrafters and would be interested
since this list's 'reply' bit me in the ass, I may as well say what I have
S-40
S-62
SX-43
SX-99
SX-100
SX-101
On 10/7/17 1:31 PM, Jerry Weiss via cctalk wrote:
> There wasn’t a head lock.
yes, there is.
It is a 'L' shaped bracket that screws onto the top of the actuator.
Details in the manual
You can tie-wrap the actuator or tape the disk with the cylinder numbers
on it to keep it from moving without
On 10/7/17 2:39 PM, couryho...@aol.com wrote:
> What homed you in collecting Hallicrafters?
A friends SX-43 got me interested in shortwave, and in getting my ticket
when I was in high school. I was given a basket-case SX-115 when I was 17
that I never got going. Apparently, those are worth a
On 10/7/17 4:05 PM, Adrian Stoness via cctalk wrote:
> I've got a sx28 needs to be recapped has allot of humming going on was last
> serviced in the 70s by my dad he got it for free when he was 12 if he could
> carry it home a mile
this is all pretty far off-topic, so I'll leave this with som
On 10/8/17 7:42 AM, dwight via cctalk wrote:
> Most hams today seem to be into 2 meter and not so much long range SW.
>
There is a huge base of HF work being done along with real-time mapping
of HF and Tropo propagation, along with all the software defined radio work.
http://www.reversebeacon.
On 10/8/17 3:14 PM, Christian Groessler via cctalk wrote:
> On 10/07/17 03:06, Rick Bensene via cctalk wrote:
>
>> If I recall correctly, these machines used an 8" Micropolis hard disk drive.
there are two versions. the 1981 8560 uses microp 1200, later ones have xebec
1410
and are sasi
070-3
On 10/19/17 9:15 PM, Ed Thierbach via cctalk wrote:
I'd be interested in a classic computing net as well. I have 40 - 10
meters available on HF. Our area is lagging in digital repeater coverage,
so no Fusion or DMR or D*Star for me just yet.
73,
-Ed- AB8OJ
I took an analog VHF/UHF radio and
7 12:12 PM, Paul Koning wrote:
On Oct 20, 2017, at 11:03 AM, Al Kossow via cctalk
wrote:
...
Was looking at the digital repeater modes this morning
http://www.mikemyers.me/blog/2016/2/19/d-star-dmr-fusion-which-is-right-for-you
Pretty disappointing that the most popular ones use proprie
On 10/25/17 11:55 AM, Rich Alderson via cctalk wrote:
> Noel, do have a reference for "some commercial time-sharing system in the
> Boston area"? From Paul Allen's autobiography, the Harvard system was
> followed
> immediately by their move to Albuquerque, where they leased time on the local
>
On 10/24/17 7:40 PM, Kip Koon via cctalk wrote:
> The choice so far it seems is the PDP-11/70. Remember I still have no idea
> beyond some searching on the internet what boards and peripherals a
> PDP-11/70 consists of. For that matter, I don't know what boards and
> peripherals are in the PDP
On 10/27/17 12:16 PM, Chuck Guzis via cctalk wrote:
> I've long had a fantasy about building a core-logic CPU such as the
> Univac Solid State.
I have been told the behavior of Univac magnetic logic was similar to NMOS
which explains why there is an RF power amplifier for the clock driver in
th
On 10/27/17 12:57 PM, Paul Koning wrote:
> That doesn't sound even close.
http://www.ussc90.nl/circ.htm
Ferractors.
While computers now are composed by many integrated circuits containing each
millions of logical units,
processing data with a speed of a few gigabits per second in a parallel
On 10/27/17 1:38 PM, Brent Hilpert via cctalk wrote:
> I wonder if they were just trying to draw an analogy between the inherent
> dynamic operation requirements of magnetic logic and the dynamic operation
> requirements of some (many?) NMOS designs (not really inherent to NMOS).
this was a l
On 10/27/17 2:00 PM, Phil Blundell via cctalk wrote:
> On the subject of NMOS dynamic logic, someone recently pointed out a
> paragraph in the technical manual for a 1990s ARM2-based computer which
> warned of dire consequences, including possibly destruction of the
> chipset, if the circuitry w
On 10/28/17 5:48 AM, william degnan via cctalk wrote:
> Who is DVQ?
>
Bob Rosenbloom. Lives in the Santa Cruz mountains
On 10/29/17 4:59 PM, Kevin Parker via cctalk wrote:
> Maybe we (that's us on this list) need to apply this concept to the scanning
> and archiving and retention of any paper based repositories that still exist.
What a brilliant idea. We could call it "bitsavers"!
On 11/9/17 6:29 AM, Christian Corti via cctalk wrote:
> @Al: you may push it to bitsavers
done
On 11/14/17 6:16 AM, william degnan via cctalk wrote:
> Following top post of this reply...
>
> There is a doc called 709-7090 General Information Manual D22-6508, which I
> don't see in bitsavers (I don't have).
we have it
http://www.computerhistory.org/collections/catalog/102663993
I'll see
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