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
<andlabs>
panasonic drive person got back to me too late but also threw in 720k disks which is very thorough
<andlabs>
*info about 720k disks
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<andlabs>
and the samsung drive responds last
<andlabs>
I'll keep them all in mind in case the problem with the one I have now is that I killed it
<andlabs>
(which would mean yes, finding out I will kill this next drive by mistake too)
<Lord_Nightmare>
a 34 pin floppy interface iirc is just mostly a set of pins, one ground dedicated per pin (except a few in some cases), and open collector with a pull-up terminator, although unlike scsi which has the terminator on the last drive in a chain, on floppy i think the pull-up is on the floppy controller board itself?
<Lord_Nightmare>
all pull-ups are through resistors so stuff doesn't get high current blown up
<Lord_Nightmare>
floppies are surprisingly resilient: you can plug the data cable into a motherboard upside down, and as long as it isn't one of those weird floppies which supplies power over several of the normally-ground pins on the floppy cable (some ED disk drives do this) it shouldn't do any harm; the drive will power up with the activity light stuck on and not do anything
<Lord_Nightmare>
and powering it off and flipping the cable the right way round will fix it
<Lord_Nightmare>
this is unlike an apple2 diskII drive where flipping the cable over will blow up a 74xxx chip
<cr1901_modern>
The entire bottom row of pins is GND. Only the signals you write to have pullup resistors. You must supply them for the read signals
<cr1901_modern>
(The strong pullups are the reason why you can't drive write signals directly from an FPGA, even at max drive strength. You need some sort of buffer chip, at least for the 5.25" drives)
<Lord_Nightmare>
yeah. the discferret uses.... I'm not even sure.