Re: Sunday brain tickler

On 01/08/2017 06:25 PM, allison wrote: > I haven't ground on what it may be but there are four likely > directory/catalog cases. I've certainly seen my share of various filesystems. In fact, I can laboriously reconstruct the original files, there being only 70 1200 byte blocks on the disk. I

Re: Stripping an RA80

On 01/08/2017 01:46 PM, Robert Armstrong wrote: >> Tony Duell wrote: >> R80 the lines are outputs from the drive giving the coding of the ready lamp >> cap > I was always thought that the R80 had to be unit #0 to function, but I > admit that I've never tried anything

Re: Sunday brain tickler

On 01/08/2017 09:09 PM, Chuck Guzis wrote: > On 01/08/2017 04:42 PM, william degnan wrote: >> Inverse 8085? > I don't think so. If it helps, here's the first few lines of the > "directory": > > 000: 00 a1 7a c1 c0 00 00 > 0007: 00 00 00 00 00 00 00 80 1a 02 38 00 > 0013: a1 7a c1 c0 00 00 00

Re: pdp-11 assembly standards

On 1/8/2017 9:10 PM, Brent Hilpert wrote: OK, what was the standard (if there was one) number-base syntax for PDP-11 assembler? Despite all the PDP-11 assembly info on web sites, this seems to be a buried bit of info. One assembler doc uses a prefix of "", another specifies octal as default

Re: Fwd: Stinky screwdrivers

On 01/08/2017 08:16 PM, Al Kossow wrote: > > I sent this out to some friends at the end of December I've got a few large (not the torque-handle thing) from the late 60's Xcelite nutdrivers. They don't smell and they're in fine condition. Must have been a formula change at some point. Reminds

pdp-11 assembly standards

OK, what was the standard (if there was one) number-base syntax for PDP-11 assembler? Despite all the PDP-11 assembly info on web sites, this seems to be a buried bit of info. One assembler doc uses a prefix of "", another specifies octal as default and prefix of zero for decimal (opposite of

Re: Fwd: Stinky screwdrivers

On 1/8/2017 8:16 PM, Al Kossow wrote: Sadly, it looks like the good USA made hand tools will all have their plastic handles crumble eventually though I have two Craftsmen nut drivers I bought in 1975 that are still perfect. How many perished in liquid N2 back in the day. So sad. thanks jim

Re: Sunday brain tickler

Jim, that occurred to me right off the bat, but the disk has only 35 cylinders and is single-sided. No file names in the body text. The text itself isn't proprietary, but merely an early cut of an already-published public report, so I have no problem sharing any part of the disk image. --Chuck

Re: Don't put certain tool handles in with artifacts...acetic acid and butyri...

Yep - -Al I need to separate my Burroughs Xcelite tools somehow form some of the other things. Acetic acid will eat stuff... the Enigma had a green acitate filter in the lid... with the case closed it ate all the metal keytops rings up. It was ghastly! Ed# In a

Fwd: Stinky screwdrivers

I sent this out to some friends at the end of December Forwarded Message Subject: Stinky screwdrivers Date: Thu, 29 Dec 2016 08:51:02 -0800 From: Al Kossow To: Eric Schlaepfer , Kenneth Sumrall CC: Hedley Rainnie

Re: Don't put certain tool handles in with artifacts...acetic acid and butyric acid

> I found this interesting wondering why some tool handles smelled odd. Xcelite is notorious for this

Don't put certain tool handles in with artifacts...acetic acid and butyric acid

Don't put certain tool handles in with artifacts... acetic acid and butyric acid EATS! I found this interesting wondering why some tool handles smelled odd. - Ed Sharpe archivist for SMECC "Tool handles made of Cellulose Acetate Butyrate. A thermoplastic, it offers excellent UV and

Re: Sunday brain tickler

I don't know the names, but the use of extents might be something going on. I highlighted the c4a3 extent. The last two columns maybe cylinder and sector number. There may be a free count going on with the next to the last two bytes 0xff85 for instance in the first stick. Since line 0x000

Re: Unknown keyboard

Kyle Owen writes: > Does anyone have an idea what this keyboard went to? The "here is" key > tells me it's likely a terminal, but the hex key pad is throwing me off. > Pictures here: http://imgur.com/a/zTgR2 On 2017-Jan-08, at 6:17 PM, Brian Walenz wrote: > I've got one in

Re: Unknown keyboard

I've got one in the metal case. On the back is a property tag: Teledyne Ryan Aeronautical E.T. "028400a" [<- the 'a' in pen] Gov't I.D. "MDA9729530013" Prop. of "USAF" R-5051-2-REV.5-93 Where the stuff in quotes is from a typewriter, the rest is form boilerplate. There are also some inventory

Re: Sunday brain tickler

On 01/08/2017 04:42 PM, william degnan wrote: > Inverse 8085? I don't think so. If it helps, here's the first few lines of the "directory": 000: 00 a1 7a c1 c0 00 00 0007: 00 00 00 00 00 00 00 80 1a 02 38 00 0013: a1 7a c1 c0 00 00 00 00 1b ff 00 00 001f: 5c 25 15 1b 4c 40 00 00 ff ff 37 05

Re: Sunday brain tickler

Inverse 8085? Bill Degnan twitter: billdeg vintagecomputer.net On Jan 8, 2017 7:38 PM, "Chuck Guzis" wrote: > On 01/08/2017 04:24 PM, Jules Richardson wrote: > > On 01/08/2017 10:03 AM, Chuck Guzis wrote: > >> I'm looking at a sample of what I see as a directory of sorts and >

Re: Sunday brain tickler

On 01/08/2017 04:24 PM, Jules Richardson wrote: > On 01/08/2017 10:03 AM, Chuck Guzis wrote: >> I'm looking at a sample of what I see as a directory of sorts and >> am attempting to decode the file names from it. They're not >> anything as elegant as Rad50, but the encoding has escaped my weary

Re: Sunday brain tickler

On 01/08/2017 10:03 AM, Chuck Guzis wrote: I'm looking at a sample of what I see as a directory of sorts and am attempting to decode the file names from it. They're not anything as elegant as Rad50, but the encoding has escaped my weary brain. Hmm, do you have any clues to go on? Knowledge of

RE: Stripping an RA80

>Tony Duell wrote: >Well, actually I think you own an R80 but don't know it :-) >As I understand it, the R80 had the sort-of SMD interface. 2 cables >(60 and 26 wires). It's not SMD, there are significant differences, but anyway. Can't speak for it being an SMD

RE: Stripping an RA80

>Tony Duell wrote: >R80 the lines are outputs from the drive giving the coding of the ready lamp >cap I was always thought that the R80 had to be unit #0 to function, but I admit that I've never tried anything else. I wonder if that's not true?? The RL02 drive(s) on

Re: More circuit help required please

On 08/01/2017 18:20, "Tony Duell" wrote: >> However, two of us bought units at the same time and the other one has a >> little bridgeboard containing a 74LS244 that sends the RGB signals to a DIN >> socket on the back of the case for an external monitor. I also can't see a

Re: Stripping an RA80

On Sun, Jan 8, 2017 at 6:46 PM, Robert Armstrong wrote: >>Tony Duell wrote: >>R80 the lines are outputs from the drive giving the coding of the ready lamp >>cap > > I was always thought that the R80 had to be unit #0 to function, but I admit > that I've

Re: Stripping an RA80

On Sun, Jan 8, 2017 at 6:20 PM, Robert Armstrong wrote: >>Tony Duell wrote: >>Well, actually I think you own an R80 but don't know it :-) >>As I understand it, the R80 had the sort-of SMD interface. 2 cables >>(60 and 26 wires). It's not SMD, there are

Re: More circuit help required please

On Sun, Jan 8, 2017 at 6:11 PM, Adrian Graham wrote: > On 08/01/2017 17:21, "Tony Duell" wrote: > >>> I photographed both sides of the board and merged the pictures together to >>> make a front/back composite. The trace for the cathodes of the

Re: More circuit help required please

On 08/01/2017 17:21, "Tony Duell" wrote: >> I photographed both sides of the board and merged the pictures together to >> make a front/back composite. The trace for the cathodes of the 3 diodes >> links together on the back of the board and doesn't go anywhere else. The >>

Re: More circuit help required please

> I photographed both sides of the board and merged the pictures together to > make a front/back composite. The trace for the cathodes of the 3 diodes > links together on the back of the board and doesn't go anywhere else. The > front trace from V302 cathode goes straight to R312. The anodes DO

Re: More circuit help required please

On 08/01/2017 16:18, "Mouse" wrote: http://www.binarydinosaurs.co.uk/STCExecutelSyncCircuit.jpg >>> I don't believe it's correct as drawn. For one thing you have V333, >>> an NPN transistor, with the collector grounded (and no -ve supplies >>> on the circuit. >

Re: More circuit help required please

On 08/01/2017 14:06, "Tony Duell" wrote: > On Sun, Jan 8, 2017 at 2:00 PM, Adrian Graham > wrote: > >> You were right, I'd drawn out R335 wrongly and flipped V333. All the anodes >> go via R312 to the collector of V333 along with R309-R311.

Re: More circuit help required please

On Sun, Jan 8, 2017 at 4:18 PM, Mouse wrote: > I also question the way R311/R310/R309 are all different. I would > expect the red, green, and blue circuits to be electrically more or > less identical, and different pulldown values does not fit with that. Well, I

Re: More circuit help required please

>>> http://www.binarydinosaurs.co.uk/STCExecutelSyncCircuit.jpg >> I don't believe it's correct as drawn. For one thing you have V333, >> an NPN transistor, with the collector grounded (and no -ve supplies >> on the circuit. Bipolar transistors are to some extent symmetric under interchange of

Sunday brain tickler

I'm looking at a sample of what I see as a directory of sorts and am attempting to decode the file names from it. They're not anything as elegant as Rad50, but the encoding has escaped my weary brain. The system in question is a Lanier 103 word processor. Here are some samples. Can anyone come

Re: Drum Computers

On 01/08/2017 03:02 AM, Mark Linimon wrote: > - One time a contractor came in to paint the building and despite > instructions, painted the computer room as well. Of course the paint > got in to the Bryant. The folks who worked on it said, well, what > have we got to lose. They pulled the

Re: Drum Computers

On Sat, Jan 07, 2017 at 04:26:25PM -0800, Chuck Guzis wrote: > I'm sure that Paul remembers the CDC 6603 disk drive, made by Bryant > (the big horizontal spindle one with the hydraulic "leak collectors"). I didn't see the Bryant that Rice University had in operation on the R1 Research Computer; I

Re: More circuit help required please

On Sun, Jan 8, 2017 at 2:00 PM, Adrian Graham wrote: > You were right, I'd drawn out R335 wrongly and flipped V333. All the anodes > go via R312 to the collector of V333 along with R309-R311. Base for V333 is > the inverted sync output of the MR9735. R322 is 6.8k >

Re: More circuit help required please

On 08/01/2017 07:31, "Tony Duell" wrote: > On Sat, Jan 7, 2017 at 11:37 PM, Adrian Graham > wrote: >> Evening all, >> >> I wish I had the ability to take a board layout and turn it into a logically >> laid out schematic but as yet I don't.

Re: More circuit help required please

On 08/01/2017 07:31, "Tony Duell" wrote: > On Sat, Jan 7, 2017 at 11:37 PM, Adrian Graham > wrote: >> Evening all, >> >> I wish I had the ability to take a board layout and turn it into a logically >> laid out schematic but as yet I don't.

Vintage computers for sale

Hey, I saw your message to the ClassicCmp making list. I believe I have a KIM-1 to sell you but I'd have to dig it out. Also, most of the machines mentioned in this posting are still available: http://www.vcfed.org/forum/showthread.php?51781-Mulitple-and-divers-computers-for-sale Let me know if

Re: Drum Computers

On 01/07/2017 08:44 AM, Paul Koning wrote: > Not a drum computer but another example of a company not known for > computers that nevertheless built one: Goodyear. A supercomputer > called STARAN, a very odd architecture. Actually based on an earlier > one built at Sanders Associates (a defense

Re: Drum Computers

On 2017-01-07 8:26 PM, Chuck Guzis wrote: On 01/07/2017 08:44 AM, Paul Koning wrote: Not a drum computer but another example of a company not known for computers that nevertheless built one: Goodyear. A supercomputer called STARAN, a very odd architecture. Actually based on an earlier one