Re: Question about disk images

["BLuRry" <brendan.robert@gmail.com>]

On Jan 24, 1:07 pm, "schmidtd" <schmi...@my-deja.com> wrote:
> You can in fact transfer .NIB images
> successfully.  It's a much more involved process, but ADTPro and SST
> can get you there.  Full instructions from Moose O'malley are here, if
> this giant link works:http://www.infocom.cqu.edu.au/Staff/Michael_O_malley/web/download/ADT...
> Here is a tinyurl to the same place:http://tinyurl.com/yojkgw

Here's the instructions in that site, in the event the page ever gets
lost into the abyss:

------ snip --------

ADT can only handle standard Apple ][ floppy disks.  i.e. non copy
protected disks and disks that don't have strange formats.  If you
have these type of disks, then you need to use SST - Super Saltines
Transcopy.

See "Transferring Copy Protected Disks" below for further details.


****************************************************
 Transferring Copy Protected Disks : Apple 2 -> PC
****************************************************

Execute SST - Super Saltines Transcopy on the Apple 2 :

    Select Menu Option 1 - Pirate a Disk

    Select Menu Option 2 - Pack

   Enter the Start Track - 0 is the default
   - just hit enter to keep this value.

     Enter the End Track - 34 is the default
     - just hit enter to keep this value.

                    Step - 1 is the default
                    - just hit enter to keep this value.

      Synchronize Tracks - NO is the default
      - just hit enter to keep this value.

            Nibble Count - NO is the default
            - just hit enter to keep this value.

Now you are told to insert disks, and press <Return>.

So, place the Copy Protected Disk into Drive 1 on your Apple 2 and a
blank DOS 3.3 formatted disk into Drive 2, and press <Return>.

SST will then read the copy protected disk and write this in packed,
transferrable format onto the standard DOS 3.3 disk in Drive 2.

Only half of the image of the Copy Protected Disk can fit onto the
blank disk in Drive 2, so at the half-way point, SST will ask you to
place another blank formatted disk into Drive 2.

Do, this, and press <Return> and SST will complete the process.

Now, you have a 2 standard DOS 3.3 floppy disks that each contain
half of a complete image of a Copy Protected Disk.

These Disks can then be transferred to the PC for use with emulators
using ADT, in exactly the same as we transferred Standard Floppy
Disks above.  (See "Transferring Standard Floppy Disks" above).

On the PC side - where you are running an Apple 2 emulator - you will
need to use SST (running on an Apple 2 Emulator) to stitch the 2
halves of the Copy Protected Disk's disk images back together again.

Let's say you transfer the 2 standard disks as "d1a.dsk" and
"d1b.dsk", we now need to UnPack these disks from within the Apple 2
Emulator on the PC to a special NIB disk image file (you could copy
and overwrite an existing NIB file, or else download and use the
blank.NIB file from Asimov - I'll assume you have called the NIB file
"game.nib" on the PC) :

    Select Menu Option 1 - Pirate a Disk

    Select Menu Option 3 - UnPack

    Select Menu Option 1 - Packed Parms

   Enter the Start Track - 0 is the default
   - just hit enter to keep this value.

     Enter the End Track - 34 is the default
     - just hit enter to keep this value.

                    Step - 1 is the default
                    - just hit enter to keep this value.

      Synchronize Tracks - NO is the default
      - just hit enter to keep this value.

            Nibble Count - NO is the default
            - just hit enter to keep this value.

Place d1a.dsk in drive 1 and game.nib in drive 2, and hit <return> to
make SST proceed.

Then, when prompted to "turn over the disk", place d1b.dsk in drive 1
and leave game.nib in drive 2 and hit <return> and SST will finish
the process of rebuilding a virtual disk image copy of the original
copy protected floppy disk.

You should then have a NIB disk image file that contains the copy
protection / formatting information of the original disk along with
all of the program code / data from this disk, and this disk should
now run under emulation just as the original floppy disk runs on a
real Apple 2, only it will be considerably faster under emulation.


****************************************************
 Transferring Copy Protected Disks : PC -> Apple 2
****************************************************

You can reverse the above process to transfer NIB disk images back to
real floppy disks on the Apple 2.  To do this, you would use SST on
the Apple 2 emulator to pack the NIB disk onto two .DSK disk image
files, ADT these across onto 2 floppy disks on the real Apple 2, and
then use SST on the real Apple 2 to unpack (stitch) these together
again onto a single floppy disk.