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Which systems use the index hole in 5.25" disks?

PostPosted: Wed Sep 05, 2012 4:36 pm
by matsondawson
??

Re: Which systems use the index hole in 5.25" disks?

PostPosted: Wed Sep 05, 2012 4:52 pm
by tezza
Hmm..not sure. I know standard Apple II drives didn't.

Re: Which systems use the index hole in 5.25" disks?

PostPosted: Wed Sep 05, 2012 6:29 pm
by TRS80
I believe most machines that use a Western Digital Floppy Disk Controller (1771 or 1793) rely on this. Some PC controllers also rely on it and have trouble reading TRS-80 disks generated by some operating systems because there is insufficient gap after the index hole before the sector starts.