PPGA and PPGB are two utilities for reading, writing and formating PPG 5'1/4
diskettes on a PC 5'1/4 drive. Diskette data can be saved to and restored from
disk images.

The format used in the image files is the DSK format used in the Flex .dsk
image files of Wolfgang Schwotzer's FlexEmu. It's also the same as the one used
by Anadisk and in the .wta and .wtb files from Hermann Seib.
This format consists in putting each sector read from the diskette one after
the other in the image file, without any header or separator.

The pros of PPGA and PPGB compared with other tools such as Anadisk or
Teledisk :
 - They read and write disk images.
 - They use the simple DSK and Anadisk format (hence open towards Flexplorer, wtadidsk
   and wtbdisk).
 - They work very well within Windows 9x.
 - They are freewares.

PPGA and PPGB have similar functionalities :
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PPGA version 1.0

 - Formats a PPG Waveterm A 5'1/4 diskette (raw format without OS
   structures : 77 tracks of 16 sectors of 256 bytes, double side, single
   density, 500kb/s data rate)
 - Writes to it an Anadisk or Flex DSK container file (files must be 630784
   bytes long).
 - Reads a PPG Waveterm A 5'1/4 diskette and writes its content to a
   Flex DSK container file.
 Warning : The previous content of the diskette is always erased.

 Usage :
      ppga [/r | /fw | /w] <container file name> [diskette unit]
      ppga [/f] [diskette unit]
      ppga [/h | /?]

      If the diskette unit (A: or B:) is omitted it defaults to B:.
      If there's no switch and a container file name on the command line,
           the diskette is read as if the /r switch had been specified.

 Switches :
      /r : reads a PPG Waveterm A 5'1/4 diskette and saves its content to a
           Flex DSK container file
      /fw :Formats a PPG Waveterm A 5'1/4 diskette (raw format without OS
           structures : 77 tracks of 16 sectors of 256 bytes, double side,
           single density, 500kb/s data rate) and writes to it an Anadisk
           or Flex DSK container file (files must be 630784 bytes long)
      /w : only writes the container file to the diskette which must be
           already formatted.
      /f : only formats the destination diskette (77 tracks of 16 sectors of
           256 bytes, double side, single density, 500kb/s data rate).
      /h or /? or no parameter : shows help.
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PPGB version 1.0

 - Formats a PPG Waveterm B 5'1/4 diskette (raw format without OS
   structures : 77 tracks of 4 sectors of 1024 bytes, double side, single
   density, 500kb/s data rate)
 - Writes to it an Anadisk or Flex DSK container file (files must be 630784
   bytes long).
 - Reads a PPG Waveterm B 5'1/4 diskette and writes its content to a
   Flex DSK container file.
 Warning : The previous content of the diskette is always erased.

 Usage :
      ppgb [/r | /fw | /w] <container file name> [diskette unit]
      ppgb [/f] [diskette unit]
      ppgb [/h | /?]

      If the diskette unit (A: or B:) is omitted it defaults to B:.
      If there's no switch and a container file name on the command line,
           the diskette is read as if the /r switch had been specified.

 Switches :
      /r : reads a PPG Waveterm B 5'1/4 diskette and saves its content to a
           Flex DSK container file
      /fw :Formats a PPG Waveterm B 5'1/4 diskette (raw format without OS
           structures : 77 tracks of 4 sectors of 1024 bytes, double side,
           single density, 500kb/s data rate) and writes to it an Anadisk
           or Flex DSK container file (files must be 630784 bytes long)
      /w : only writes the container file to the diskette which must be
           already formatted.
      /f : only formats the destination diskette (77 tracks of 4 sectors of
           1024 bytes, double side, single density, 500kb/s data rate).
      /h or /? or no parameter : shows help.
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PPGA and PPGB work with DOS and Windows 9x. They should work too with Windows
3.x, but this was not tested.

PPGA and PPGB are freewares.

Send any comment about PPGA and PPGB to thiault@clr48pl.der.edf.fr


Pascal Thiault, 07/2001
