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Difference between SF314 and Industry Standard 720K drives

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Aside from the obvious physical dimensions what is the difference between a SF314 floppy drive and an industry standard 720k drive?

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? I don't see diff. in physical dimensions. And I'm not sure that there is something like "industry standard 720k drive" .

I use in last years floppy drives which are not made for Atari computers. Simple reason: they are made after Atari era.

And that means that I know differences well:

1: PC floppy drives - let's call them so, because most is made for PCs, have default setting to act as floppy B . The reason is twist of lines of PC floppy cables.

In Ataris no cable twist, and drives need to be set as A (logical 0) . Talking of course about first (and usually only) drive .

Another, and practically last one relevant diff. is write protection :

See this page: http://atari.8bitchip.info/flomodam.html

 

Of course, there may be differences in shape of eject button, and even in color :-D

Ah, and most of 3.5 drives in last 27 years is not 720 K, but 1.44 MB - well , on later Ataris that can be 1.6 MB too :)

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Aside from the obvious physical dimensions what is the difference between a SF314 floppy drive and an industry standard 720k drive?

 

The DS0 and DS1 jumpers, that's pretty much it.

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Pin 34 (READY) isn't used by the SF314/SF354 drives. That can confuse a disk controller expecting the ready line to be asserted.

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