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Differences between TI floppy formats


OLD CS1

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In the list of formats for the HxC floppy emulator it shows V9T9 and PC99 formats are supported.

 

HxC2001 HeadQuarters : HxC Floppy Emulator

http://hxc2001.free.fr/floppy_drive_emulator/index.html#FILESSUPPORTED

 

I should probably know this, but I have been sick this weekend and cannot think straight, so forgive me being stupid. I assume the V9T9 is not a standard track dump. Is the PC99 format the same as DSK disk dumps?

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I thought we had a nice detail page somewhere, but as a quick answer:

 

V9T9 format is just a sector dump, it contains the sectors concatenated together. Images larger than 90k may have the second half of the disk in reverse order (according to documentation I found), but this is rare. They will be 90k or an exact multiple of 90k if built right.

 

PC99 format is an attempt at a true track dump, and contains inter-sector information. Paolo did some research and suggested on the Yahoo group that this inter-track data is neither correct nor useful for real disks. They will be a larger size than the sector data adds up to.

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I believe they are both referenced in our sticky development thread. :)

 

Might be at that, but as a "development" thread it is not the first place I would look for a generic FAQ. But then, I suppose a programming forum on Atari Age would not be, either.

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  • 10 years later...

 

Updated the "Floppy + Formats" list, made some corrections,

and added some MPES-50 and the "Disk Backup v2.1" from Wolfgang Bertsch :)

(no warranties) :)

 

https://atariage.com/forums/applications/core/interface/file/attachment.php?id=914410

 

 

(coming from here:)
https://atariage.com/forums/topic/241978-ti-994a-resources-lists-pdfs-and-some-lists/?do=findComment&comment=4997942

 

 

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