How to use?

       - 1. Launch the application
	       Double-click the "imfEDDup.system" program

       - 2. To NIB image a disk, press S (5.25") or R (3.5")
	       Enter an output filename of up to 11 characters
	       The copy process is launched...

___________________________________________________________________________

Main screen commands

       - D/isk to file image
	       This option create a .DSK or .PO disk image from an unprotected 5.25" floppy disk.
                Enter an output filename of up to 11 characters.
                The application can guess the original file system.
                Launch the copy process...

       - S/ave file
	       This option creates .NIB/.NIT and .EDD files from a protected or unprotected 5.25" floppy disk.
                Enter an output filename of up to 11 characters.
                Launch the copy process...

       - R/ip 3.5" disk
	       This option creates .NIB/.NIT from a protected or unprotected 3.5" disk.
                It requires an Apple //gs, a boot from ProDOS8 (no GS/OS), 3MB of RAM,
                 and a 3.5" disk in slot 5, drive 1.
                Enter an output filename of up to 11 characters.
                Launch the copy process...

       - O/ptions
	       Display the options menu...

       - ?/Help
	       Shall I really tell what that does?

       - CTRL-Q
	       Shall I really tell what that does?

___________________________________________________________________________

Option menu commands

       - B/its
	       Change timebits of nibbles (1 or 2). Default is 2.
	
	- C/hange original slot & drive
	       Select the slot & drive of your 5.25" disk controller card.
                Default is slot 6 and drive 1.

       - E/DD slot
	       Select a slot where your EDD card is in (default is 0 and means no EDD card)

       - (Guess) F/ormat of diskette
	       If set, the application tries to find the file system of the diskette and
                 sets the interleaving accordingly.
                The default interleaving is the DOS 3.3 one.

       - W/rite NIB files on disk
	       By default, nibble files (.NIB) are written to disk.
                If turned off and if you have an active EDD card to rip your disks,
                 only the .EDD files are stored.

       - N/IT files on disk
	       By default, timing bits files (.NIT) are written to disk.
                If turned off, only the .EDD or .NIB files are stored.

       - O/verwrite
	       If set, existing files with the same name will be replaced

       - P/refix
	       Display a destination folder menu, press:
	       - RET to push a prefix,
	       - TAB to change to next volume,
	       - ESC to pop a prefix,
	       - A to accept the current prefix.

       - R/ead 3.5" again on error
	       Sometimes, a 3.5" disk is not read entirely in memory.
                To prevent creating bad files, the option loops until the disk is reliably read.
                You can interrupt by pressing the ESC key.

       - S/tep
	       Select the arm step:
	       - 1.0 means every track (default)
	       - .50 means every half-track
	       - .25 means every quarter-track

       - T/racks
	       Select the end track of the diskette:
	               - $22 like a standard diskette (default)
	               - $23 means one extra track
	       Now, you can copy up to 40 tracks!

___________________________________________________________________________

File formats

       The application saves different files on your disk drive.
        Please make sure you launch it from a 32MiB partition to save several disk images.
        If the program encounters an I/O error while saving, that will stop the copy process.

       - .EDD format
	       The most precise format. It contains data read from the 5.25" disk controller card
                before the Logic State Sequencer performs its magic.
                That means that data are read at a bit-level, it is a "simple" set of 1s and 0s.
	       Each phase contains $4000 (16384) bytes.
	       A standard $22 diskette (step 1 track) is 573,440 bytes long. 

       - .NIB format
	       It saves nibbles as if they were read by the Logic State Sequencer,
                therefore some protections may be lost (and I assure you they are)
	       Each phase contains $1A00 (6656) bytes.
	       A standard $22 diskette (step 1 track) is 232,960 bytes long.
	       For a 3.5" disk image, the length of the file is 1,376,256 bytes long.

       - .NIT format
	       It saves nibbles time cycle in a dedicated file.
                The default value of the timebit is $2.
                The different values are:
	               - $00 for 32 cycles nibbles,
	               - $01 for 36 cycles nibbles,
	               - $02 for 40 cycles nibbles.
	       Each phase contains $1A00 (6656) bytes.
	       A standard $22 diskette (step 1 track) is 232,960 bytes long.

       - .N35 format
	       It saves nibbles as they are read by the Integrated Woz Machine on an Apple //gs.
	       For a 3.5" disk image, the length of the file is 1,376,256 bytes long.
                Please refer to John Brooks' documentation for more information.

       - .T35 format
	       It saves nibbles time cycle in a dedicated file.
                For a 3.5" disk image, the length of the file is 1,376,256 bytes.
                Please refer to John Brooks' documentation for more information.

       - .DSK, .PO formats
	       It saves standard 16-sec disks of DOS 3.3, ProDOS, Pascal and CP/M disks.
                The file extension is based on the operating system interleaving:
	               - .DSK for DOS 3.3 and unrecognized disks,
	               - .PO for ProDOS, Pascal and CP/M disks.

___________________________________________________________________________

File sizes for 5.25" images

       The combination of the Track and Step factors generates files of different file sizes.
        Let's summarize them here (Hello Emulator Coders!):

       FORMAT  TRACK   STEP    FILE SIZE (in decimal bytes)
	.EDD   $22     1.0     573,440
	.EDD   $22     .50     1,130,496
	.EDD   $22     .25     1,687,552
	.EDD   $23     1.0     589,824
	.EDD   $23     .50     1,163,264
	.EDD   $23     .25     1,736,704
	.EDD   $24     1.0     606,208
	.EDD   $24     .50     1,196,032
	.EDD   $24     .25     1,785,856
	.EDD   $25     1.0     622,592
	.EDD   $25     .50     1,228,800
	.EDD   $25     .25     1,835,008
	.EDD   $26     1.0     638,976
	.EDD   $26     .50     1,261,568
	.EDD   $26     .25     1,884,160
	.EDD   $27     1.0     655,360
	.EDD   $27     .50     1,294,336
	.EDD   $27     .25     1,933,312
	.NIB/T $22     1.0     232,960
	.NIB/T $22     .50     459,264
	.NIB/T $22     .25     911,872
	.NIB/T $23     1.0     239,616
	.NIB/T $23     .50     472,576
	.NIB/T $23     .25     938,496
	.NIB/T $24     1.0     246,272
	.NIB/T $24     .50     485,888
	.NIB/T $24     .25     965,120
	.NIB/T $25     1.0     252,928
	.NIB/T $25     .50     499,200
	.NIB/T $25     .25     991,744
	.NIB/T $26     1.0     259,584
	.NIB/T $26     .50     512,512
	.NIB/T $26     .25     1,018,368
	.NIB/T $27     1.0     266,240
	.NIB/T $27     .50     525,824
	.NIB/T $27     .25     1,044,992
	.DSK/PO        $22     1.0     143,360
	.DSK/PO        $23     1.0     147,456
	.DSK/PO        $24     1.0     151,552
	.DSK/PO        $25     1.0     155,648
	.DSK/PO        $26     1.0     159,744
	.DSK/PO        $27     1.0     163,840

___________________________________________________________________________

Minimum System Requirements

       It is a 6502 compatible application and it requires a 80-column card.
	It has been tested on Apple IIgs ROM 01 & ROM 3 versions.

       There's 6KiB left for ADTPro compatibility ;-)

___________________________________________________________________________

Copyright Notice

       Parts of the source code (UP.EDD.S) are (c) 1986, Utilico Microware.
	Parts of the source code (UP.DISK35.S) are (c) John Brooks.
	Artwork by Daniel Kruszyna (http://krue.net/)

___________________________________________________________________________
