cr1901 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://libera.irclog.whitequark.org/~h~yamahasynths
<nikitalita>
yeah, i figured as much; apparently the GM standard didn't actually come out until after the SC mk1 was in production, so the GM symbol indicates its probably a MK2
<NiGHTS>
William D. Jones sur Twitter : "Which is explicitly what a certain litigation-happy company wants...… "
<andlabs>
I mean that was kinda hinted at in the thread but eh
<andlabs>
also ejs's thread reminds me
<andlabs>
I have this one floppy disk that people have so far failed to recover data from...
<ejs>
it can be challenging...
<andlabs>
apparently it works enough to expose four files but one of them just will not read
<andlabs>
I was hoping I could do some analog signal analysis and sine wave amplification magic with the raw flux data but now i understand htat's not quit how it works =p
<andlabs>
if I'm lucky the files will be ROM images with a checksum at the end
<nikitalita>
andlabs: anything fun in those rom files?
<ZrX-NoMs>
Tried looking between the tracks?
<andlabs>
I haven't touched the disk yet lol
<andlabs>
I still don't have a proper disk dumping setup of any sort
<ZrX-NoMs>
A fine needle and an ammeter. Rotate a floppy under the needle and monitor the microamps, then write it down to a paper.
<Sarayan>
I wonder, is there a way to image magnetism?
<NiGHTS>
Wide-field imaging of the iso-magnetic field contours of an array of... | Download Scientific Diagram
<Sarayan>
nice
<tunixman>
that's pretty rad
<tunixman>
I was the typist for a paper looking into the GMR back in the day.
<tunixman>
Mostly because my grandmother was playing with it in her lab with some PhD candidates and they were too busy with their courses so I got to type.
<andlabs>
for what it's worth ehre's what I have
<andlabs>
- one (1) teac fd-55gfr or whatever that model was
<andlabs>
- lots of 3.5" drives
<andlabs>
- a flux engine I manually built that i'm not sue actually works
<andlabs>
- a glasgow that I have yet to assemble the cable for
<andlabs>
- a commodore 1571 and zoomfloopy
<andlabs>
I've been looking ot get a greaseweazle but still haven't yet lol
<andlabs>
oh I also have one of those boards for dumping amiga disks with a "USB floppy drive" but I still haven't figured out which model they want
<NiGHTS>
Amiga Floppy Disk Reader/Writer aka DrawBridge - DrawBridge aka Amiga Arduino Floppy Disk Reader and Writer
<andlabs>
I *think* they want a FD-05PUB?
<andlabs>
I also need to get one of those 3D printed things for rotating a floppy disk
<andlabs>
for manual inspection
<andlabs>
someone here mentioned I didn't need one but
<balrog>
andlabs: what are you trying to do? :)
<balrog>
05:35 <andlabs> I was hoping I could do some analog signal analysis and sine wave amplification magic with the raw flux data but now i understand htat's not quit how it works =p
<balrog>
did you read the blog post covering scarybeasts' and philpem's work on that? :p
<andlabs>
no but I was hinted that that post existed
<andlabs>
thanks
<andlabs>
I will say I know this particular disk has already passed through several hands but
<andlabs>
a) I don't know what has been tried yet
<andlabs>
b) I know some of those hands had it long before any of the tools I named existed
<andlabs>
I also want to just archive all disks I have in general
<andlabs>
but those don't need fancy repair operations =P
<ZrX-NoMs>
Build your own hardware.
<tunixman>
thanks ZrX-NoMs, that's my plan...
<balrog>
"archive all disks I have in general"
<tunixman>
I thought it was a bot...
<balrog>
if you have money and want something fast, reliable, and with good support, and don't mind that it's closed-source and requires a Mac, get an Applesauce
<balrog>
otherwise, FluxEngine or Greaseweazle should do.
<balrog>
Build your own hardware? please don't build another thing, we have enough, and both FluxEngine and Greaseweazle are cheap and easy.
<andlabs>
but you technically have to build the flux engine yourself
<andlabs>
=P
<andlabs>
I'm not interested in doing this fast
<andlabs>
the speed advnatage of just rapidly dumping disk after disk after disk will be lost on also scanning the packaging
<balrog>
"build the fluxengine" — you mean, solder a header?
<andlabs>
but it still technically counts as building your own hardware
<andlabs>
:3
<andlabs>
(i'm mostly being silly)
<balrog>
Applesauce software nowadays can import SCP and KF raw
<balrog>
(though that doesn't let you take advantage of its fast imager)