Re: Datamation, May 1972

Paul Koning wrote: > Interesting. From around 1975 or so (...) A few years later (...) > Not long after, Lippold Haken created a keyboard that's continuous rather > than discrete (think of a keyboard like the fingerboard of a violin); a > successor of that is still

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

On Thu, Nov 17, 2016 at 7:54 PM, Al Kossow wrote: > MFM? Yes. > If nothing else, there are a few domestic > 8466 chip pulls on eBay for $13 that maybe you could decap or push a > bitstream into. > A DP8466 by itself won't help, because the ECC polynomial gets loaded into

Re: Doug Englebart - mouse!

On Thu, Nov 17, 2016 at 03:53:33PM -0500, Noel Chiappa wrote: > Noel (who was an early Wikipediast, until the Marching Morons arrived) I hear Venus is very nice this time of year. mcl

Re: Double Buffer RK11-C

> From: Ethan Dicks > I haven't even made an inventory of it. What would I look for to know? Check out the module utilization chart, either in the RK11-C Engineering Drawings, or here: http://gunkies.org/wiki/RK11_disk_controller (at the top of the section "RK11-C Board chart/count

Re: Double Buffer RK11-C

On Thu, Nov 17, 2016 at 10:09 PM, Noel Chiappa wrote: > > Subject: Does anyone actually have a KT11-B? > > Date: Fri Sep 30 19:04:47 CDT 2016 > > > the ones shown in the images show it to be (mostly) an RK11-C. > > ... > > I say "mostly" because there

Double Buffer RK11-C

> Subject: Does anyone actually have a KT11-B? > Date: Fri Sep 30 19:04:47 CDT 2016 > the ones shown in the images show it to be (mostly) an RK11-C. > ... > I say "mostly" because there appear to be extra cards on the right hand > end; whether those are some sort of

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

On 11/17/16 3:07 PM, Eric Smith wrote: > On Thu, Nov 17, 2016 at 3:59 PM, dwight wrote: > >> Do you have working hardware? >> > > No, only a drive that 48-bit ECC. MFM? For a while, I was collecting ISA controllers that weren't adaptec, wd, dtc, or omti for the

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

On Thu, Nov 17, 2016 at 5:49 PM, Chuck Guzis wrote: > Perhaps there's something useful here: > http://reveng.sourceforge.net/ > I wrote something like that back in the mid-1990s, though not as polished. The problem is the exponential increase in search space. Polynomials

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

On 11/17/2016 02:59 PM, dwight wrote: > Do you have working hardware? > > A lot can be deduced by using simple data, like all 0's > > and different data lengths. Perhaps there's something useful here: http://reveng.sourceforge.net/ I've used the code for oddball floppy CRCs. --Chuck

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

On Thu, Nov 17, 2016 at 3:59 PM, dwight wrote: > Do you have working hardware? > No, only a drive that 48-bit ECC. I don't know whether it used a National Semiconductor based controller, but it doesn't use the Western Digital polynomial, so NS is my first guess. If it used

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

Do you have working hardware? A lot can be deduced by using simple data, like all 0's and different data lengths. Dwight From: cctalk on behalf of Eric Smith Sent: Thursday, November 17, 2016 2:33:36 PM To:

Re: Datamation, May 1972

and http://www.computerhistory.org/collections/catalog/102651543 On 11/17/16 2:51 PM, Al Kossow wrote: > http://www.worldcat.org/title/illiac-suite-for-string-quartet-1957/oclc/3866433 > >

Re: Datamation, May 1972

http://www.worldcat.org/title/illiac-suite-for-string-quartet-1957/oclc/3866433

Re: Datamation, May 1972

On 2016-Nov-17, at 2:26 PM, Al Kossow wrote: > On 11/17/16 2:20 PM, Paul Koning wrote: >> Maybe an earlier ILLIAC? > > correct. > > https://en.wikipedia.org/wiki/Illiac_Suite From that link, ILLIAC Suite / String Quartet No. 4 is a 1957 composition by the ILLIAC I, programmed by Lejaren A.

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

I'm not looking forward to trying to reverse-engineer 48-bit and 56-bit ECC polynomials. However, they usually tried to choose polynomials with relatively few terms, to minimize the number of XOR gates needed in the hardware. The common "Glover" 32-bit polynomial was: x^32 + x^28 + x^26 +

Re: Fwd: NCD16 images. Was: NCD19 / Xncd19

Fred, could you make these files readable, please On 11/15/16 11:44 AM, Fred Jan Kraan wrote: > > Forgot the URL: http://fjkraan.home.xs4all.nl/comp/divcomp/NCD/ > > Forwarded Message > Subject: NCD16 images. Was: NCD19 / Xncd19 > Date: Tue, 15 Nov 2016 20:42:16 +0100 > From:

Re: Datamation, May 1972

I remember that CDC used to put on a show for Navy brass back in the 60s using, tape drives and printers for the rendition of "Anchors Aweigh". ISTR that it was a 1604 used for this, but may also have been a 3800. The memory dulls with time. I believe there was also a similar rendition of "The

Re: Datamation, May 1972

On 11/17/16 2:20 PM, Paul Koning wrote: > Maybe an earlier ILLIAC? correct. https://en.wikipedia.org/wiki/Illiac_Suite

Re: Datamation, May 1972

> On Nov 17, 2016, at 5:04 PM, Brent Hilpert wrote: > > On 2016-Nov-17, at 1:08 PM, Josh Dersch wrote: > >> I have an LP, "Electronic Music from the University of Illinois" (1967 or >> so): >>

Re: Datamation, May 1972

On 2016-Nov-17, at 1:08 PM, Josh Dersch wrote: > I have an LP, "Electronic Music from the University of Illinois" (1967 or > so): > https://www.discogs.com/Various-Electronic-Music-From-The-University-Of-Illinois/release/349054. > If I recall, they used the U of I's ILLIAC IV in the recording.

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 3:08 PM, Josh Dersch wrote: > > I have an LP, "Electronic Music from the University of Illinois" (1967 or > so): > https://www.discogs.com/Various-Electronic-Music-From- > The-University-Of-Illinois/release/349054. > If I recall, they used the U of I's

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 3:03 PM, Paul Koning wrote: > > This is the piece I mentioned, I believe. https://www.youtube.com/watch? > v=60oxsizDxaQ That's quite eerie sounding!

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 12:44 PM, Kyle Owen wrote: > On Thu, Nov 17, 2016 at 10:10 AM, Paul Koning > wrote: > > > > > Interesting. From around 1975 or so, and worth learning about is the > > music synthesizer developed on the PLATO system at the

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 2:57 PM, Al Kossow wrote: > > > On 11/17/16 12:44 PM, Kyle Owen wrote: > > are there any other > > computer music albums out there? > > yes, check the Warners budget (Nonesuch) label > > > Don't forget "Music From Mathematics" to get your IBM 7090 fix.

Re: Datamation, May 1972

> On Nov 17, 2016, at 4:02 PM, Paul Koning wrote: > > >> On Nov 17, 2016, at 3:57 PM, Al Kossow wrote: >> >> >> >> On 11/17/16 12:44 PM, Kyle Owen wrote: >>> are there any other >>> computer music albums out there? >> >> yes, check the Warners

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 3:01 PM, Cory Heisterkamp wrote: > > Don't forget "Music From Mathematics" to get your IBM 7090 fix. -C > Good catch! I'll see if I can find a copy.

Re: Datamation, May 1972

> On Nov 17, 2016, at 3:57 PM, Al Kossow wrote: > > > > On 11/17/16 12:44 PM, Kyle Owen wrote: >> are there any other >> computer music albums out there? > > yes, check the Warners budget (Nonesuch) label In college I once played some pieces from a recording in the back

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 2:57 PM, Al Kossow wrote: > > > On 11/17/16 12:44 PM, Kyle Owen wrote: > > are there any other > > computer music albums out there? > > yes, check the Warners budget (Nonesuch) label > Cool, thanks! I've heard of Nonesuch before, probably from Rifkin's

Re: Datamation, May 1972

On 11/17/16 12:44 PM, Kyle Owen wrote: > are there any other > computer music albums out there? yes, check the Warners budget (Nonesuch) label

Re: Datamation, May 1972

> On Nov 17, 2016, at 3:44 PM, Kyle Owen wrote: > > On Thu, Nov 17, 2016 at 10:10 AM, Paul Koning > wrote: > >> >> Interesting. From around 1975 or so, and worth learning about is the >> music synthesizer developed on the PLATO system at the

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 10:10 AM, Paul Koning wrote: > > Interesting. From around 1975 or so, and worth learning about is the > music synthesizer developed on the PLATO system at the University of > Illinois by Sherwin Gooch. The hardware is described in great detail >

Re: Doug Englebart - mouse!

> On Nov 17, 2016, at 2:20 PM, Rich Alderson wrote: > > ... > I think arguing "priority" is a pointless exercise. In the real world, the > mouse came to the fore with the Xerox Alto, where its use was inspired by > Engelbart, not Telefunken, and it spread to Lisp

RE: Doug Englebart - mouse!

From: jos Sent: Thursday, November 17, 2016 9:38 AM > On 17.11.2016 17:18, Murray McCullough wrote: >> Today in the age of pointer-graphics, ie., using a mouse, is a very >> important day: Nov. 17, 1970, Doug Engelbart, of SRI, Menlo Park, CA, >> invented the mouse or granted a patent for

Re: National Semiconductor 48-bit and 56-bit ECC polynomials

Signal boosting (For me, Eric's post landed in the naughty corner) On 16 November 2016 at 00:19, Eric Smith wrote: > Has anyone determined what 48-bit and 56-bit ECC polynomials are used by > the National Semiconductor hard disk controllers? The DP8496/97 allows > choice of

Re: HP 6954A Multiprogrammer

I took the thing apart last night. There is no room for an internal disk drive. I'll take photo's and post them by the weekend. Overall the computer side is mostly a typical 9000/200/300 chassis. The CPU is a unmodified early generation 310 w/1MB+Monochrome. -pete On Wed, Nov 16, 2016 at

DNIX and ABCenix install media disk images.

A guy in Sweden made the effort to image the install media for DNIX 5.3 and 5.12 as well as ABCenix 5.12. https://dl.dropboxusercontent.com/u/96935524/Datormusuem/dnix-imd.tar.bz2 https://dl.dropboxusercontent.com/u/96935524/Datormusuem/ABCnix.tar.bz2 These are for computers made by DIAB (later

Re: Doug Englebart - mouse!

On 11/17/16 10:26 AM, Fred Cisin wrote: > Who has some time to go clean up Wikipedia? > No one Also, the Englebart mouse is two potentiometers mounted at a right angle so it only worked in a confined space. I need to dig my vaccuum-formed case SRI mouse and keyset out and take pictures of

Re: Doug Englebart - mouse!

On Thu, 17 Nov 2016, jos wrote: On 17.11.2016 17:18, Murray McCullough wrote: Today in the age of pointer-graphics, ie., using a mouse, is a very important day: Nov. 17, 1970, Doug Engelbart, of SRI, Menlo Park, CA, invented the mouse or granted a patent for "X-Yposition indictator for a

Re: Doug Englebart - mouse!

On 17.11.2016 17:18, Murray McCullough wrote: Today in the age of pointer-graphics, ie., using a mouse, is a very important day: Nov. 17, 1970, Doug Engelbart, of SRI, Menlo Park, CA, invented the mouse or granted a patent for "X-Yposition indictator for a grahics display." BTW he doesn't know

Re: Datamation, May 1972

> On Nov 17, 2016, at 10:26 AM, Kyle Owen wrote: > >> >> I wish...but there may be an alternative. There is a 1970 book called "The >> Computer and Music" containing 21 articles and documents on the subject. >> Edited by Harry B. Lincoln. It is very possible that the

Doug Englebart - mouse!

Today in the age of pointer-graphics, ie., using a mouse, is a very important day: Nov. 17, 1970, Doug Engelbart, of SRI, Menlo Park, CA, invented the mouse or granted a patent for "X-Yposition indictator for a grahics display." BTW he doesn't know who coined the word 'mouse'. Happy computing!

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 9:39 AM, Al Kossow wrote: > > https://archive.org/stream/kilobaudmagazine-1978-02/ > > I think there is a paper in the DECUS proceedings as well > > > You might be interested in knowing Prentiss is still around and the > original tapes > along with

Re: Datamation, May 1972

On Thu, Nov 17, 2016 at 9:54 AM, Kyle Owen wrote: > Does anyone have a scanned (or hard) copy of this? I'm trying to locate > one, without much success. I'm mostly interested in the article entitled > "Capture and Display of Keyboard Music". > > Thanks! > > Kyle > I

Datamation, May 1972

Does anyone have a scanned (or hard) copy of this? I'm trying to locate one, without much success. I'm mostly interested in the article entitled "Capture and Display of Keyboard Music". Thanks! Kyle

Re: TI 990/189 debugging

9.3V might actually work fine for a TMS9980, even though it's below spec. It's not going to damage the part, so it may be worth a try before modifying the board for 12V to the CPU socket. In NMOS digital parts that predate depletion loads, Vdd needs to be significantly higher than the most

Re: HP Draftmaster RX pen plotter needs love

On 2016-Nov-16, at 11:34 PM, Michael Newton wrote: > That's right, there is a -5v test point that reads zero. From the previous discussion, presumably you mean -12V. > Any guidance? Like if I need to pull parts off and test them, which ones > might I go for? I'm a caveman with electronics.