Nah, its a physical "switch/button/clip" type thing. When its pushed in it means the disk isnt write protected. When its out it means its going through the hole of the disks write enable/disable thingamy. (please excuse the tchnical names Im using

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I learned this the hard/confusing way

I assume its similar for most floppy drives?
edit: sorry, I misread. Sounds like you've already looked into what I was refering to.