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
<NiGHTS>
Add disk reading functionality. by cr1901 · Pull Request #3 · marler8997/windows-imager · GitHub
<cr1901>
B/c I don't read the MBR, bootsector, or "whatever EFI does" to get the actual used disk space"; I just "read the whole damn disk"
<cr1901>
s/bootsector/Volume Boot Record/
<NiGHTS>
Correction: <cr1901> B/c I don't read the MBR, Volume Boot Record, or "whatever EFI does" to get the actual used disk space"; I just "read the whole damn disk"
<NiGHTS>
Pietro Gagliardi sur Twitter : "does anyone know how to use the cassette device in a MAME driver or to decode a cassette circuit into the set of parameters used to encode the only thing I know about this is the circuit diagram and that it's some 1200 baud thing"
<andlabs>
DX100 emulation almost done whee
<ZrX-NoMs>
Firmware would be usually where you'd look into the data format.
<ZrX-NoMs>
Tho tapes are usually pretty simple.
<andlabs>
firmware gets the final digital data
<andlabs>
I think?
<andlabs>
it's not connected to an ADC
<andlabs>
I mean the data storage, not the actual system-specific data
<andlabs>
is it KCS or something else? and if so what are the parameters? and how do I feed that into the fromula ((m_cassette->input() * scale_factor) comparison_operator threshold_value ? 1 : 0
<andlabs>
and/or reverse engineer the circuit to produce those values
<andlabs>
it's not simple RC circuitry
<andlabs>
though I see things that look like RC embedded within
<andlabs>
but then there are resistors that are parallel with ground and capacitors that aren't and I don't know
<andlabs>
P66 is the save/record and P67 is the load/play and the vertical line off the top is a tap to headphones which I assume ar for monitoring loads
<ZrX-NoMs>
That circuit most likely just filters through a certain frequency signal and the opamp makes clean squarewave.