Floppy Drive doesn't do both formats, but does sometimes

Post by **exxos** » Fri Apr 23, 2021 11:23 am

Thanks @stephen_usher I assume its a proper setup where the MOSFET only switches low each side, so it should not affect the high-voltage.

Cosmic Puppet · Post by **Cosmic Puppet** » Fri Apr 23, 2021 2:35 pm

Thanks for doing this!

So, just to reiterate. UltraSatan is fine if plugged in and switched on. The problems only occur (for me at least if plugged in and not powered on)

It took me a while to realise this. So you can for instance just have it switched on with no cards in it in order to format using TOS 1.04 and have no weird issues. Like people say though there might be motherboards that have different behaviour. It's almost like Ataris have souls.

Post by **exxos** » Fri Apr 23, 2021 3:17 pm

I wonder if that MOSFET level converter grounds everything when not powered up...

Post by **exxos** » Fri Apr 23, 2021 9:05 pm

exxos wrote: Fri Apr 23, 2021 3:17 pm I wonder if that MOSFET level converter grounds everything when not powered up...

Actually I don't think it could do that, as on the STE which has buffers, it would blow up the MOSFETs..

Maybe someone can test the databus out to ultrasatan on and off and see what actually happens...

In any case such problems were solved on the H5.. As both floppy and DMA are buffered and isolated from each other, so one just simply cannot affect the other.

exxos's Atari, Amiga & retro forum

Floppy Drive doesn't do both formats, but does sometimes

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Re: Floppy Drive doesn't do both formats, but does sometimes