[Coco] Floppy format questions
ncherry at linuxha.com
Mon Jun 17 15:38:37 EDT 2019
On 6/17/19 1:40 PM, David Ladd wrote:
> On Mon, Jun 17, 2019 at 11:42 AM Neil Cherry <ncherry at linuxha.com> wrote:
>> I recall that OS9 had a unique (at least I thought so) format/layout
>> for the floppy disk. Something odd about one of the tracks (I think).
>> Can someone point me to a link with the information. I'm trying to
>> setup a Gotek device with the correct floppy layout to start with.
>> I do have a bunch of floppy drives (5 1/4 and 3 1/2 & 40 and 80 track)
>> but it has been so long since I've used them. I'm betting they'll need
>> more than a clean up.
> PDF page 65 is the start of the information you might be looking for.
> The thing is that the default sector count is the same. 18 (256 byte)
> sectors per track.
> Disk Basic is tracks 0-34 single sided only.
> OS-9 can do double sided floppy disks and go up to 80 tracks or more
> depending on what the actual drive itself can handle.
> Disk Basic stores its special information on track 17 where as OS-9 stores
> its volume information in LSN0 like most other OS's of the time did.
> I hope this is helpful. :D
Yes it is, thanks
Linux Home Automation Neil Cherry ncherry at linuxha.com
http://www.linuxha.com/ Main site
http://linuxha.blogspot.com/ My HA Blog
Author of: Linux Smart Homes For Dummies
More information about the Coco