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1

Quite usual disposition on Apple II with 9" monitors.


4

The Disk-II mechanism is essentially a floppy drive with the low-level controller ripped out. Few, if any, other manufacturers were willing to do that, as it means a more complex controller and connection to the computer. Drive mechanisms from the Shugart SA-400 onwards used just two lines — Direction and Step — to manage the heads. To manage the four ...


0

There used to be games that used half tracks, and I believe, quarter tracks for copyright protection. Skipping half tracks in the middle was fairly common, there were special copy programs that could copy those disks but they where unreliable and took forever. If a normal floppy was written as 1 3 5 7 9 half track such a disk would be written as 1 3 6 8 10 ...


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