[cctalk] Re: QIC replacement tension band
Hi, Do you have some links? I bought https://amzn.eu/d/8CJdyXB and https://amzn.eu/d/j279BI4 but I have the feeling that they are not what I need š. BogDan. dum., 29 ian. 2023, 23:55 Chuck Guzis via cctalk a scris: > On 1/28/23 22:47, BogDan Vatra via cctalk wrote: > > Hi, > > > > Can someone recommend a place where I can buy replacement tension band > for > > QIC(-150) tapes? I known about the boiling trick, sadly I don't have any > > original bands to boil š. > > The ones from Amazon that Al and I suggested are thicker, but they work > just fine on DC-300 sized QIC cartridges. I've even used them on Magnus > SLR carts. > > --Chuck > > >
[cctalk] DLOAD BASIC command for Color Computer 1/2 heritage
Over at the CoCo Mailing List, there's a archeological discussion about the DLOAD BASIC command in older versions of the Color Computer BASIC. It uses the serial port (and no doubt was designed for computer sharing in classrooms or similar), but the questions are around how it was designed and what inspiration is drew from. I infer MS wrote the code, and the protocol includes: P.ACK - Acknowledge - C8 hex. P.ABRT - Abort - BC hex. P.BLKR - Block request - 97 hex. P.FILR - File request - 8A hex. P.NAK - Negative Acknowledge - DE hex. Does that look like any protocol anyone has seen before? Jim
[cctalk] Re: DEC 11/60's
Cool. My wife won't leave me. What did they go for? C On 1/29/2023 2:24 PM, Jerry Wright via cctalk wrote: Message: 4 Date: Sat, 28 Jan 2023 21:54:50 + (UTC) From: Jerry Wright Subject: [cctalk] DEC PDP 11/60'sĀ in need of a new home. To: "cctalk@classiccmp.org" Message-ID: <1945749291.492113.1674942890...@mail.yahoo.com> Content-Type: text/plain; charset=UTF-8 I have 2 of these thatĀ are in need of aĀ new home.Ā These are quite largeĀ 4 racks each.Ā Although the 11/60Ā is only a double rack by itself. Offers. Located In Kent. WA. - Jerry253-569-6041 -These are most likely sold... I do have some DataĀ Generals, and HP 1000's next up. Jerry 253-569-6041
[cctalk] Re: Computer of Thes[e]us
On 1/27/2023 8:31 AM, Liam Proven via cctalk wrote: On Tue, 24 Jan 2023 at 21:26, Doc Shipley via cctalk wrote: This Subject: line is damaging my brain. It's such an old name, the 2nd E has worn right out of it. I mean it is the most commonly-used letter. It was always likely to fail first. Thanks for the chuckle.Ā I admit I created this issue, I copied the name from the previous comment into the subject line under an assumption of correctness (probably not a defensible argument, but it's the one I'm sticking with) -- Jim Brain br...@jbrain.com www.jbrain.com
[cctalk] PKBACK Floppies?
Some of the floppies Iām recovering data look to be either a multi-part ZIP file, or something. Was this a separate product from PKZIP? Iām not sure if I have a copy of PKZIP in the stuff Iāve recovered thus far. Iāve not pulled them into DOSBOX to try and restore them, so far Iāve just tried to use Stuffit-Expander. Part of the problem is every file has the same name, just on different floppies. Zane
[cctalk] Re: Mechanical Selectric keyboards on video terminals (was Re: Typing class in high school)
On 2023-01-29 12:25 a.m., Chuck Guzis via cctalk wrote: On 1/28/23 20:20, Paul Berger via cctalk wrote: The keyboard on a 1052 is a keypunch keyboard I believe it is the same as the 029.Ā The printer in the 1052 is a keyboardless Selectric with no tab rack and they spaced via a cam on the OP shaft instead of taking a cycle.Ā The ones I saw on a couple 360s (22 and 25) the space cam was so worn it wobbled when it took a cycle, but the customer would never let us do anything with it as long as it worked because they could not do anything with out the console. Was the 1052 more or less durable than the model B adapted for the 1620? With its movable carriage, it always seemed to be in danger of self-destructing--the thing would shake a bit then a carriage return was executed. --Chuck My experience is that they where pretty durable, I never saw a lot of 1052s by the time I started in 1979 there was not a lot of 360s in our branch.Ā I think they did pretty good given that they are the same mechanism as the OP selectric the only thing different in the printer of the 1052 and also the early selectric terminals, was the 1052 and terminals had a capacitor start motor that was stronger than motor in the OP selectric, strong enough that if the mechanism did jam it could tear the teeth off of the motor belt.Ā A 1052 would hammer away pretty constantly printing out the console log, and since it did not have a tab rack, it used spaces to line up the columns on the printout, which is likely why the space clutch and cam where in such bad shape. I don't know how they would compare to a model B that was used as an I/O I never saw any systems that used one.Ā I would imagine that moving the heavy carriage back on something that is printing steady would be a trouble spot.Ā I would image that kind of use would also be hard on the power roll that drives the type hammers into the paper.Ā I don't image they would be very fast, a Selectric could print at 15.5 characters per second and at that speed the cycle clutch never latched it was just one continuous cycle.Ā Selectric I/Os that ran at full 15.5 chars/sec suffered way more problems than ones that printed at a lower speed. IBM later came out with a second Selectric I/O which had the high wear parts beefed up in them and the keyboard was separated from the printer. Ā All of the open transfer contacts where replaced by reed switches and magnets.Ā The filter shaft was driven by a clutched gear running off the OP shaft and magnets against the bails under the keyboard moved magnets to select the character code but I don't recall how it was strobed, but I seem to recall that it was another magnet that was always moved by the filter shaft but was a little behind the magnets for the character reeds.Ā These I/O II units where a lot more robust. Paul.
[cctalk] Re: 3/16ths inch ink ribbon
Thank you! I will let you guys know if it works out :) On Sun, Jan 29, 2023, 5:36 PM Chuck Guzis via cctalk wrote: > On 1/29/23 15:19, Eric Moore via cctalk wrote: > > Hello, I am looking for 3/16ths inch ink ribbon as used on the IBM 029 > > keypunch. > > > > I have one lightly damaged ribbon that is entirely dry. I was told by a > > typewriter restorationist that ribbon re-inking with nylon never works. > > > > Has anyone had much success cleaning and rewetting ink ribbons? The WD40 > > trick on the internet seems like it would gunk up the punch mechanism. > > > > Thanks for any information yall can provide, > > > https://www.aroundtheoffice.com/IBM-026-Keypunch-Ribbon/productinfo/RP-520-IBM/ > > --Chuck > > >
[cctalk] Re: 3/16ths inch ink ribbon
On Sun, 29 Jan 2023, Eric Moore via cctalk wrote: Hello, I am looking for 3/16ths inch ink ribbon as used on the IBM 029 keypunch. I have one lightly damaged ribbon that is entirely dry. I was told by a typewriter restorationist that ribbon re-inking with nylon never works. Has anyone had much success cleaning and rewetting ink ribbons? The WD40 trick on the internet seems like it would gunk up the punch mechanism. Thanks for any information yall can provide, -Eric WD40, or a very light machine oil, not even being an ink, is an emergency fraantic attempt to get through the next couple of hours. And yes, sometimes it will get it working briefly. It'll dissolve some of the dried ink enough to make it work. Nylon ribbons are designed to go through using the same part of the ribbon multiple times. Re-inking will extend that, but the cloth itself still has a finite life. You can extend the ribbon's life but it ain't the same as a new ribbon. Adding more ink is far preferable to just diluting the remaining dried ink. But, it is only a temporary measure, until you can replace the ribbon. There used to be cheap devices specificaally for re-inking ribbons. Just a motor to turn the ribbon shaft to advance it past a saturated pad of ink. https://hackaday.com/2019/04/03/reinking-dot-matrix-printer-ribbons-because-its-fun-okay/ https://retrocomputing.stackexchange.com/questions/4591/how-to-renew-and-re-ink-old-printer-ribbons If you can't find printer ribbon re-inking ink, stamp pad re-inking ink will do. Or even cut open magic markers. BTW, you will have a helluva mess to try to get ink off of everything.
[cctalk] Re: Mac System 7.1 or 7.5 question
>> That sounds like a floppy disk written by PC Exchange. RESOURCE.FRK would >> contain any resource fork for any file in that folder, so at the root >> \RESOURCE.FRK\DESKTOP would probably have been the equivalent of the Desktop >> folder. > Thanks Cameron, that jogs a few old brain cells, and sounds right. Initially I thought this had something to do with FASTBACK on MS-DOS, which made zero sense, as I was finding them on FASTBACK backup floppies. Then I realized some of the floppies were just simple data floppies. > > Iām finding Google has limited knowledge of some of this stuff. Searching Google for anything related to the classic Mac OS has become more and more useless (along with everything else Google is getting more and more useless for). All you get nowadays is little-m macOS. Sometimes I have luck searching for "System 7.x" but that won't work for Mac OS 8 and 9. :/ -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- Shell scripting: the ultimate open source software.
[cctalk] Re: 3/16ths inch ink ribbon
On 1/29/23 15:19, Eric Moore via cctalk wrote: > Hello, I am looking for 3/16ths inch ink ribbon as used on the IBM 029 > keypunch. > > I have one lightly damaged ribbon that is entirely dry. I was told by a > typewriter restorationist that ribbon re-inking with nylon never works. > > Has anyone had much success cleaning and rewetting ink ribbons? The WD40 > trick on the internet seems like it would gunk up the punch mechanism. > > Thanks for any information yall can provide, https://www.aroundtheoffice.com/IBM-026-Keypunch-Ribbon/productinfo/RP-520-IBM/ --Chuck
[cctalk] 3/16ths inch ink ribbon
Hello, I am looking for 3/16ths inch ink ribbon as used on the IBM 029 keypunch. I have one lightly damaged ribbon that is entirely dry. I was told by a typewriter restorationist that ribbon re-inking with nylon never works. Has anyone had much success cleaning and rewetting ink ribbons? The WD40 trick on the internet seems like it would gunk up the punch mechanism. Thanks for any information yall can provide, -Eric
[cctalk] Re: QIC replacement tension band
On 1/28/23 22:47, BogDan Vatra via cctalk wrote: > Hi, > > Can someone recommend a place where I can buy replacement tension band for > QIC(-150) tapes? I known about the boiling trick, sadly I don't have any > original bands to boil š. The ones from Amazon that Al and I suggested are thicker, but they work just fine on DC-300 sized QIC cartridges. I've even used them on Magnus SLR carts. --Chuck
[cctalk] Re: Mac System 7.1 or 7.5 question
> On Jan 29, 2023, at 11:23 AM, Cameron Kaiser via cctalk > wrote: > >> Iām looking at some 3.5ā floppies from about 1995, so probably about the >> time I got my first Mac. >> Am I correct that System 7 used A:\RESOURCE.FRK\DESKTOP as the Resource Fork >> data? MacOS 12.5 doesnāt appear to use it. :-) >> A bunch of the floppies Iām looking at have this, including ones that appear >> to be PC Backups. > > That sounds like a floppy disk written by PC Exchange. RESOURCE.FRK would > contain any resource fork for any file in that folder, so at the root > \RESOURCE.FRK\DESKTOP would probably have been the equivalent of the Desktop > folder. Thanks Cameron, that jogs a few old brain cells, and sounds right. Initially I thought this had something to do with FASTBACK on MS-DOS, which made zero sense, as I was finding them on FASTBACK backup floppies. Then I realized some of the floppies were just simple data floppies. Iām finding Google has limited knowledge of some of this stuff. Zane
[cctalk] QIC replacement tension band
Hi, Can someone recommend a place where I can buy replacement tension band for QIC(-150) tapes? I known about the boiling trick, sadly I don't have any original bands to boil š. Thanks. Regards, BogDan. P.s. I found on Amazon a few alternatives, but they are quite thick (1.5mm) while the original ones are much thiner.
[cctalk] Re: DEC PDP 11/60's in need of a new home.
Wow. Interested pics? Do they have rk07 s On January 28, 2023 4:54:50 PM EST, Jerry Wright via cctalk wrote: >I have 2 of these thatĀ are in need of aĀ new home.Ā These are quite largeĀ 4 >racks each.Ā Although the 11/60Ā is only a double rack by itself. >Offers. Located In Kent. WA. >- Jerry253-569-6041
[cctalk] Re: Mac System 7.1 or 7.5 question
> Iām looking at some 3.5ā floppies from about 1995, so probably about the time > I got my first Mac. > Am I correct that System 7 used A:\RESOURCE.FRK\DESKTOP as the Resource Fork > data? MacOS 12.5 doesnāt appear to use it. :-) > A bunch of the floppies Iām looking at have this, including ones that appear > to be PC Backups. That sounds like a floppy disk written by PC Exchange. RESOURCE.FRK would contain any resource fork for any file in that folder, so at the root \RESOURCE.FRK\DESKTOP would probably have been the equivalent of the Desktop folder. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- Our way is peace. -- Septimus, Son worshipper, Star Trek "Bread & Circuses"
[cctalk] DEC 11/60's
Message: 4 Date: Sat, 28 Jan 2023 21:54:50 + (UTC) From: Jerry Wright Subject: [cctalk] DEC PDP 11/60'sĀ in need of a new home. To: "cctalk@classiccmp.org" Message-ID: <1945749291.492113.1674942890...@mail.yahoo.com> Content-Type: text/plain; charset=UTF-8 I have 2 of these thatĀ are in need of aĀ new home.Ā These are quite largeĀ 4 racks each.Ā Although the 11/60Ā is only a double rack by itself. Offers. Located In Kent. WA. - Jerry253-569-6041 -These are most likely sold...Ā Ā I do have some DataĀ Generals, and HP 1000's next up. Jerry 253-569-6041
[cctalk] Mac System 7.1 or 7.5 question
Iām looking at some 3.5ā floppies from about 1995, so probably about the time I got my first Mac. Am I correct that System 7 used A:\RESOURCE.FRK\DESKTOP as the Resource Fork data? MacOS 12.5 doesnāt appear to use it. :-) A bunch of the floppies Iām looking at have this, including ones that appear to be PC Backups. Zane
[cctalk] QIC tension band replacement
Hi, Can someone recommend a place where I can buy tension bands for QIC(-150) tapes? I known about the boiling trick, sadly I don't have any original bands to boil š. Thanks. Regards, BogDan. P.s. I found on Amazon a few alternatives, but they are quite thick (1.5mm) while the original ones are much thiner.
[cctalk] Re: DEC PDP 11/60's in need of a new home.
On 2023-01-28 16:54, Jerry Wright via cctalk wrote: I have 2 of these thatĀ are in need of aĀ new home.Ā These are quite largeĀ 4 racks each.Ā Although the 11/60Ā is only a double rack by itself. Pictures? Configuration?
[cctalk] Re: Mechanical Selectric keyboards on video terminals (was Re: Typing class in high school)
> -Original Message- > From: Steve Malikoff via cctalk > Sent: 29 January 2023 01:35 > To: General Discussion: On-Topic and Off-Topic Posts > Cc: ste...@malikoff.com > Subject: [cctalk] Mechanical Selectric keyboards on video terminals (was Re: > Typing class in high school) > > Chuck said > > Speaking of keyboards, were there any computer keyboards or typewriter > > keyboards with interposer mechanisms such as used on IBM keypunches? > > I recall that was one thing that had a very different "feel" from a > > typewriter keyboard. It changed my keyboarding style. Welll whilst I didn't know this until yesterday, the IBM 2260 VDU had such a keyboard. There is one for sale on E-Bay https://www.ebay.com/itm/115685064067 and there are nice pictures of the keyboard. Dave
