ADFer
~~~~~
ADFer is a tool for reading and writing ADF files.

ADFer is a complete overhaul of the excellent ADF-Blitzer, which has been a
very useful tool for me and many others since it was originally rleased in
1998. However, it hadn't been updated since 2001, and there were a couple of
small improvements I thought it could do with. So I started developing a new
version to include many fixes and new features, while keeping the same
simplicity as the original.

This release is a quick bugfix release that addresses an issue where file locks
were not being released if creating an ADF was cancelled or otherwise failed.
Additionally, in these cases, the partial file is now deleted. Also, the GUI
spacing was adjusted by a couple of pixels to accommodate tall fonts.

New features and fixes since ADF-Blitzer 3 include:
- Rewritten memory routines to eliminate problems with RAM disk use
- Ability to read and write RAD: disks
- Option to verify disks after writing
- Better font sensitivity - uses Workbench screen font
- Automatically selects low memory mode when required
- Removed 68020-specific code so now works on 68000

New features and fixes since ADF-Blitzer 2.2 include:
- Progress bar and cancel button
- Multi-disk writing
- Reworked GUI to fix some minor issues
- Low memory mode (no need to load entire ADF into memory), so works in 0.5MB
- Proper error checking for opening drives, allocating memory etc. so
  (hopefully) no more silly crashes
- Fast RAM is no longer required
- Rewritten to use OS calls directly

Usage
~~~~~
ADFer is simple to use. The main window shows 3 buttons: Read, Quit and Write.

Read will read the contents of a floppy in the selected drive and save its
contents as an ADF chosen by you.

Quit simply quits ADFer.

Write will take a chosen ADF and write it to the floppy in the selected drive.
Bear in mind it will do this with no warning if the disk is not write protected!
If multiple ADFs are selected, you will be prompted to insert a floppy for each
ADF before it is written in turn.

The Drive and Settings menus offer some additional options.

Drive lets you select which floppy drive to use, from DF0: to DF3:, or RAD:.

The Preferences menu offers two options: Low Memory Mode and Verify after
writing.
Low Memory Mode can be enabled to use ADFer when there is less than 1MB of free
RAM available. In this mode, only one track is read or written at a time instead
of holding the entire image in RAM at once. This takes much less memory, but can
be slower.
Verify after writing can be enabled to get ADFer to check the newly-written disk
against the ADF file once writing has finished. A message will tell you whether
or not the verification was successful.

Tooltypes
~~~~~~~~~
There are four Tooltypes that can be set in ADFer's icon to control certain
options:

DEFAULTDIR=<path>
Set this tooltype to choose a default directory for ADF files

RADHANDLER=RAD:
This sets the DOS handler used for the RAD: virtual floppy drive

RADDEVICE=ramdrive.device
This sets the device driver used for the RAD: drive

RADUNIT=0
This sets the unit number used for the RAD: drive

Note that the RAD settings should all refer to the same virtual floppy drive.


Thanks
~~~~~~
Thanks to Andreas Etzrodt and Magnus Lundin for their excellent work on
ADF-Blitzer, and for releasing the code on which ADFer is based.

Thanks to everyone who gave feedback and carried out beta testing for me.


Changes in this Version
~~~~~~~~~~~~~~~~~~~~~~~
1.2 (10.02.2017)
Quick bugfix release
- Fixed bug where file lock wasn't released when creating an ADF was cancelled
- Adjusted GUI spacing slightly for taller fonts
- If creating an ADF isn't successful for any reason (DOS error, cancelled),
  the partial file is deleted

Changes since ADF-Blitzer 2.20
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Complete overhaul of the code, updated to AB3 format
- Added error checking for file and drive accesses
- Added low memory mode, now works on 1MB Amigas
- Reworked GUI to better adapt to different window borders etc.
- Rewrote reading and writing routines
- Added progress bar
- Added Cancel function
- Fixed file requesters (proper size, save mode...)
- Configurable default drawer for ADFs
- Added multi-ADF selection for writing disks
- Changed fast memory requirement to any memory

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown]                 1283    1636  78.4% -lh5- 6d13 Feb  5 18:24 ADFer.info
[unknown]                37345   96564  38.7% -lh5- 22ad Feb 10 22:41 ADFer/ADFer
[unknown]                  472     917  51.5% -lh5- 371f Feb 10 22:41 ADFer/ADFer.info
[unknown]                 2115    4530  46.7% -lh5- 47bb Feb 10 22:51 ADFer/ADFer.readme
[unknown]                  383     861  44.5% -lh5- 620a Feb  5 18:24 ADFer/ADFer.readme.info
[unknown]                  815    1498  54.4% -lh5- b8e7 Feb 10 22:48 ADFer/History.txt
[unknown]                  385     861  44.7% -lh5- 8d75 Feb  5 18:24 ADFer/History.txt.info
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         7 files   42798  106867  40.0%            Feb 10 15:35