ChanServ changed the topic of ##yamahasynths to: Channel dedicated to questions and discussion of Yamaha FM Synthesizer internals and corresponding REing. Discussion of synthesis methods similar to the Yamaha line of chips, Sound Blasters + clones, PCM chips like RF5C68, and CD theory of operation are also on-topic. Channel logs: https://freenode.irclog.whitequark.org/~h~yamahasynths
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<cr1901_modern> I found a strange corrupted zip file while cleaning up backups today. Among the contents are: Cypress DUSE drivers for DOS, Floppy images for Windows 1.x through 95, and an incomplete svn repo for a project I did when I was a junior in Uni.
<cr1901_modern> I have absolutely no recollection of ever making such a zip file, let alone one that I stopped compressing halfway through. But it's entirely on brand.
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<ej5> weird because zip files have the file list at the end
<cr1901_modern> 7zip GUI was able to unzip it, but the unzip command line tool gave up
<cr1901_modern> "End-of-central-directory signature not found"
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<cr1901_modern> Anybody want to help me figure out a file format? I have this ~8MB file simply titled "z". I have no idea what file format it is, other than it's paired with a .tar backup I made years ago
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<cr1901_modern> Well I can't seem to rsync anything to my server rn, so this'll have to wait
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<whitequark> what does `file` say
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<cr1901_modern> http://gopher.wdj-consulting.com:70/store/z Okay, here we go. Enjoy. Checked w/ strings... nothing sensitive in this file I don't think
<whitequark> that's a tar archive
<whitequark> it has nothing but the sources of proftpd
<cr1901_modern> Does it require an offset? when I do "tar xf z", I get "Unexpected EOF in archive"
<sorear> -rwxr-xr-x 1000/1000 7596083 2011-10-30 12:36 mnt/home/wjones/proftpd-1.3.4rc3.tar.gz
<whitequark> no idea, i just opned it with mc
<sorear> but the file has length 7521280
<sorear> I haven't ruled out sparseness but it would be weird for a gzip file
<cr1901_modern> the accompanying tar that "z" came with wasn't gzipped either, FWIW
<cr1901_modern> so I most likely didn't gzip this one either
<cr1901_modern> anyways, thanks for the data points, it indeed appears to be a screwed-up tar archive
<cr1901_modern> (This is what I get for "fire and forget" backups of old hard disks over the years)
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<cr1901_modern> Lord_Nightmare, Foone: Any idea where this font comes from originally? https://www.youtube.com/watch?v=6kqUTf1HupY
<cr1901_modern> Seems like all VCRs used the same damn font
<cr1901_modern> (I know it's a video effect)
<ej5> probably some japanese OSD chip
<andlabs> my only problem with that is what's the likelihood that someone pointed a camera at a TV like that in 1997? and not recorded directly into a VCR
<andlabs> also smart commenter saying "lol this reminds me of creepypasta"
<ej5> and the time didn't change at all, kinda goofy
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<cr1901_modern> ej5: I'm gonna admit, that was the most obvious sign it's fake. And I totally missed it :P
<cr1901_modern> andlabs' reasoning, and the fact that the text didn't disappear soon after the video started, was my reasoning
<cr1901_modern> (I think you can keep the text there via remote)
<Foone> cr1901_modern: I think it's the STV5730A
<Foone> that chip and clones seem to be very common in VCRs.
<Foone> and yeah, this shouldn't be shown on TV, but it's also possible that they played the tape through a VCR (with OSD stuck on) through a capture device.
<cr1901_modern> Foone: Awesome thanks!
<cr1901_modern> I'm almost 100% certain this is a video effect
<Foone> yeah. I agree with that.
<cr1901_modern> this whole sm64 thing is the meme of the month
<Foone> I haven't double checked but I agree
<cr1901_modern> Every copy is personalized.
<natarii> yeah it's just fx for sure
<natarii> the osd is very similar to a jvc vhsc camcorder i have though, the tape icon and TBC
<cr1901_modern> That looks like a match :o
<natarii> https://datasheetspdf.com/pdf-file/369064/NEC/UPD6467/1 this is the osd chip in it
<natarii> i don't see the tape icon in the character map though, so different character rom i guess
<Foone> the upd6465 and upd6467 have slashed zero, though.
<Foone> my closed caption generator uses the upd6465 chip's font, so I'm more familiar with that one, but I think the upd6467 is the same. I'll have to check and add the upd6467 if it's not
<Foone> btw let me know if you find any other OSD chips. I'm always looking for more.
<Foone> I've got the STV730A, Max7456, SAA5050, Z86229, RO3_2513, and uPD6465
<Foone> *STVV5730A
<natarii> i should have saved the name of the one i found in my kvm switch. they scraped the number off of it so i made it my personal mission to find out what it was
<Foone> ugh, I hate KVMs that use OSD stuff. I was trying to do some video production with them and I could do it just find except the KVM would always stick "INPUT 2" over it
<natarii> you can program device names into this one, but it likes to corrupt its eeprom so they randomly lose characters
<natarii> it is extremely cheap and nasty
<Foone> fun!
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