09-24-2019, 06:03 PM
(09-24-2019, 10:00 AM)oggie Wrote: Interesting. so if you use a double sided drive (panasonic ju-475 for example) to read a c64 disk, it can, in theory read both sides at once, correct? but if you do, the back side will be incorrect due to this offset. So if you `flippy mod` the drive, it will allow you to copy both side of a c64 disk without having to physically rotate the disk in the drive and therefore create 1 image for both sides at once. But if you don't mod the drive, you will have to manually flip the disk over and create two images?Exactly.
A certain group of people insist on archiving with flippy modded drives "because that is how many programs were mastered".
The SCP does (I think, I have never tried it) support dumping the flux from a flippy modded drive, but does not support decoding any data from the second side.
But when archiving a small number of crufty unimportant flippy disks, it is simpler to just punch a second index hole and flip it over.