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
<andlabs> wait what are you trying to do with the board?
<Nerionaya> andlabs: it is a subject of an upcoming blog post
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<cr1901> Foone: Are you doing schematic capture for fun (the schematic for the CPU board is online)?
<Foone> for repair. I'm trying to understand it better so I can make it work
<cr1901> And I could've sworn KiCAD _did_ have S-100, as well as the ISA bus... guess not.
<Foone> it does seem to have ISA. unless I installed that separately, which is certainly possible
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<cr1901> Foone: I have a question... do you know how to format 1.44 disks to 1.7MB capacity in Windoze 10?
<Foone> I'm not sure you can. I think the tools that reformat to larger sizes won't run on it
<Foone> unless maybe you mean 32bit windows 10, but probably not
<cr1901> Oh right. I also seem to vaguely recall UFI doesn't support it either
<cr1901> I haven't found the Windows API function for formatting a floppy disk. It seems to be hidden behind a shell.dll function that invokes the format GUI
<Foone> nope. and read-only support for >1.44mb formats is really flaky
<Foone> some drives won't recognize the disk at all, some recognize it correctly but just stop returning sectors after 1.44mb, and some actually work
<Foone> there's an IOTCL for formatting the tracks, but I don't know if there's an API for writing the data to them
<SEGFAULTLauren[m> Oh hey its foone
<cr1901> Foone: API for writing data is CreateFile, and WriteFile
<cr1901> So it's like Unix in that respect
<cr1901> What's the IOCTL for formatting?
<Foone> right. I mean I don't think there's an API to write data to the blank sectors that formatting makes, so that you'll have a filesystem
<NiGHTS> IOCTL_DISK_FORMAT_TRACKS - Win32 apps | Microsoft Docs
<Foone> SEGFAULTLauren[m: yep! hello
<cr1901> >I don't think there's an API to write data to the blank sectors that formatting makes, so that you'll have a filesystem
<cr1901> That's Create/Write file
<NiGHTS> CreateFileA function (fileapi.h) - Win32 apps | Microsoft Docs
<Foone> if you want to do it yourself, yes
<Foone> my point was that I don't think (unlike with other removable storage) that win32 includes a function to create the filesystem for you on a floppy
<Foone> so it's implemented in format.exe and the shell GUI
<cr1901> Ooooh... well, that's okay. If I really wanted that I could use a FAT library that does everything in memory
<cr1901> I was just futzing around w/ images to play w/ the floppy drive
<cr1901> because floppy drives are pretty, but they're even prettier when they're writing/reading :D
<cr1901> I think even 1.77 disks use FAT?
<Foone> yes.
<Foone> DMF disks are a slight variation on the usual FAT12 used on floppies, but they're still within spec so a FAT device driver should be able to read them
<Foone> they basically just change the cluster size and number of root directory entries
* cr1901 has to review FAT
<cr1901> yea, not having an API to create a FAT filesystem isn't an insurmountable problem for my flopcapades. Just need a way to low-level format and then slap down raw data into the sectors.
<Sarayan> with an upd765?
<Sarayan> well, the modern derivatives I guess
<cr1901> No, this is a USB floppy drive
<Sarayan> oh
<Sarayan> that may be "interesting"
<cr1901> UFI doesn't support 1.77 discs (which I forgot when asking my initial q). But I'm just playing around
<cr1901> when you get a new piece of hardware, you use it :3
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