Post #2559534
2023-06-28 20:19 UTC
Replies (28)
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@otheorange_tag@mstdn.social 2023-06-28 20:19
@ve7fim@mastodon.social 🥹😍
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@michaelcoyote@mastodon.social 2023-06-28 21:21
@ve7fim@mastodon.social I worked on a product that formatted it's data-files in 80 column virtual punchcards. When they moved the product from GCOS to Unix the datafiles stayed the same.
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@orc@eightpoint.app 2023-06-28 22:37
@ve7fim@mastodon.social Which format is this?
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@kaelef@mastodon.social 2023-06-28 23:04
@ve7fim@mastodon.social Awesome to see “nibble” noted in there. I’ve used that term a couple of times when referring to bits and bytes and have always gotten a blank stare.
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@virtuous_sloth@cosocial.ca 2023-06-29 01:34
@ve7fim@mastodon.social I've worked with a PDP-11 doing data-acquisition but to 6250 bpi 9-track magnetic tape. I guess paper tape spanned punch cards and early magnetic tape?
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@TomF@mastodon.gamedev.place 2023-06-29 01:40
@ve7fim@mastodon.social Reminds me of the console CDs (Sega? Memory is fuzzy here) that had the visible pattern "(C) SEGA Corp" actually burned into the CD, and that pattern had to be read by the console's boot code before it would read the rest of the disk. This wasn't really copy-protection, it was so other companies couldn't publish disks without Sega's permission, because they literally had to put the human-readable word "SEGA" on their CDs, and that's a breach of trademark law.
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@allenpg@hachyderm.io 2023-06-29 01:51
@ve7fim@mastodon.social I used to run psycho-acoustic experiments using a PDP-11 running code punched into teletype tape.
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@arcade@catcatnya.com 2023-06-29 01:58
@ve7fim@mastodon.social what format is this?
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@StompyRobot@mastodon.gamedev.place 2023-06-29 02:04
@ve7fim@mastodon.social Calling @foone@digipres.club :-)
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@ieure@retro.social 2023-06-29 02:24
@ve7fim@mastodon.social I've encountered this before when dealing with 80s device programmers, like my beloved Data I/O 29B.
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@dabeaz@mastodon.social 2023-06-29 02:26
@ve7fim@mastodon.social Wait! What?!? Is THAT what the mysterious "RUBOUT" key is about?
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@ellenor2000@mastodon.top 2023-06-29 02:53
@ve7fim@mastodon.social what is itL
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@MaryLacroix@mastodon.social 2023-06-29 03:10
@ve7fim@mastodon.social I'm getting flashbacks to Montreal machine-readable bus transfers. Way fewer punched holes, and pink instead of punched arrows. You often got lucky by using a discarded transfer that the machine would still somehow accept. I wonder if the few holes held only route data but no time data. http://billymavreas.blogspot.com/2006/01/montreal-bus-transfers.html?m=1
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@alderson@mastodon.sdf.org 2023-06-29 03:28
@ve7fim@mastodon.social It’s explicitly PDP-11, from the 1972 Paper Tape Software Handbook.
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@ricardoharvin@mstdn.social 2023-06-29 03:39
@ve7fim@mastodon.social Brings back memories of the Basic #BASIC computer programming elective I took at Piper High School, Sunrise, Florida, 1975-76. We fed the paper tape to queue batch jobs for overnight transmission to the #BrowardCounty school board's #mainframe via 300 baud modem. That taught me I'm not a #programmer (I have done #ColdFusion, "classic" #ASP, #JavaScript).
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@Felthry@awoo.space 2023-06-29 04:04
@ve7fim@mastodon.social Is this a file format that's still in use? what format is it? -F
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@jack@berlin.social 2023-06-29 06:02
@ve7fim@mastodon.social That particular standard comes from DEC, but it’s a continuation of a *long* paper tape tradition. ASCII was formulated in the context of 8-hole paper tapes in the 1960s, and 5-hole tape goes way back to player pianos in the 1840s. The most beautiful ones were punched in Mylar for durability, like this.
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@kortschak@infosec.exchange 2023-06-29 07:02
@ve7fim@mastodon.social I like that the extended length format (8 nibbles for the byte count instead of 4) has a fatter arrow, 0x08, 0x1C, 0x3E, 0x6B, 0x08, 0x00.
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@stuartl@mastodon.longlandclan.id.au 2023-06-29 07:03
@ve7fim@mastodon.social I wonder how that byte sequence came to be… > As a tape monkey > I would like a byte sequence at the start of the file that draws an arrow > So I know which way around to insert the tape to avoid the mainframe from reading satanic messages in our files!
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@hennichodernich@radiosocial.de 2023-06-29 08:52
@ve7fim@mastodon.social which one is it?
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@JohnLamp@aus.social 2023-06-29 09:18
@ve7fim@mastodon.social In 1973 I was programming on an Elliott 503, using Algol, an early structured language. Input was by using 8 column paper tape from a Friden Flexowriter. Including procedures was exactly that. Regularly used procedures were kept on rolls of paper, and were added into source code output by reading in the tape while still running the punch. Once the output tape was done, it could be run. #Algol #Elliott503 #Elliott803 #Friden
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@dentaku@fnordon.de 2023-06-29 11:07
@ve7fim@mastodon.social Which file format is that?
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@kaybee335@fosstodon.org 2023-06-29 11:31
@ve7fim@mastodon.social now having horrible flashbacks to innumerable cartons of paper tape, a PDP-8 and a barn. You have revived my PTSD (Paper Tape Stress Disorder) darn you! 😄
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@EricLawton@spore.social 2023-06-29 14:09
@ve7fim@mastodon.social @szescstopni@qoto.org In 1980, I went back to school to do computer science. My major assignment was to write a bootstrap loader for a PDP-8. I toggled it in from the front panel. It ran a paper tape reader. Then I wrote a floppy disk controller for it, on an IBM 360, which punched it to paper tape for the PDP-8 to read. Other students then got to write parts of an OS The U if Alberta had been given a 6 different mini computers with no software, so that's what they did with them
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@hazelnoot@enby.life 2023-06-29 15:26
@ve7fim@mastodon.social that's pretty cool, ngl
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@erazmus@mastodon.social 2023-06-29 16:50
@ve7fim@mastodon.social It's decided. Next time I have to design a file format, I'm going to use a header that will draw a picture if saved to paper tape :)
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@BearGriffin@discuss.systems 2023-06-29 21:00
@ve7fim@mastodon.social I used paper tapes on PDP-15's and a PDP-8. REAL challenge was reading the tapes on an IBM-360 running OS-360 w HASP.
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@winjer@mastodon.adju.st 2023-06-30 05:23
@ve7fim@mastodon.social I also like how it has a SUMCHECK and not as CHECKSUM :)