I had to turn off index hole checking or the floppy drive stuttered like crazy when SCP was trying to dump the data. As I understand the flux readers, they are oversampling the flux at some (unknown?) rate and then try to decode the encoding, FM, MFM only in order to verify checksums etc, but not for storage.
The stored data has the proprietary headers and then the data is the flux samples?! This means that in order to produce something useful for MAME this flux samples needs to be converted into something the disktools in MAME can understand, or make the disktools understand SCP format directly. Am I correct?
Once the disk is converted into the MAME format I only need the boot ROM and the write a driver for the machine, is that a correct assumption?
Now this particular disk might be trashed (or just dirty) as marked at the label so I might not get the right data out from it, but I will try.
In any case, floppy disk formats and the close relationship with physics is fun.
I just hooked up a reflectance sensor
to my oscilloscope and verified that my drive is spinning with 6 Hz eq 360rpm by making it detect a black piece of electrical tape on the floppy motor. Now, I thought I need a 300rpm floppy drive to read this floppy but depending on the flux sample rate I might be able to compensate for the difference?
Thanks for the observations Al, I'll keep figuring out this flux format, so far I have found nothing useful, but I really don't know what I am looking at, data, FM encoded data or flux samples of Fm encoded data, but I'll get there.