Disk archival

[Christian Corti]

On Mon, 16 May 2005, Jim Leonard wrote:
> Teledisk: works with MFM disks only, file format not published, limited

Well, that's not true at all.
1.
TeleDisk works fine with FM *and* MFM disks, even with mixed coding, 
sector sizes and densities (IBM System/34 format, track 0 side 0 FM 26 
sect., 128 bytes/sect., additional directory tracks MFM 26 sect., 256 
bytes/sect., data tracks e.g. 8 sect.,1024 bytes/sect.), supports normal 
and deleted address marks, will read bad sectors anyway, stores sector ID 
fields as read (important for CBM 1581 disks with swapped head IDs) and so 
on. TeleDisk archives and restores everything your combination of FDC and 
FDD can do. For example I have a Multi I/O controller card with an FDC 
that supports 128 bytes/sect. MFM. This makes it possible to archive 
Robotron A5120 UDOS diskettes.
2.
The file format has been reverse-engineered some time ago. See 
http://www.fpns.net/willy/wteledsk.htm for more information (it's not my 
site!).

Christian