0cd CD-Rom Emulator v7.1
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0CD is a small resident utility which emulates MSCDEX in a way I have not found
in any other emulator. 0CD installs itself into memory, runs a program or a
batch file, and then cleans up and exits, neat and tidy. 0CD does the following:

  þ Appear as a normal MSCDEX driver to any program
  þ Creates virtual drives from directories, making them appear as cd-rom
    drives
  þ Lets the virtual drives have their own volume label
  þ Can write protect the cd-rom drive
  þ Can make the cd-rom drive appear to have 0 bytes free
  þ Simulates different speed of the cd-rom drives
  þ Enables audio-through-put
  þ Can co-exist with mscdex
  þ Answers intelligently to the following function calls:
    þ MSCDEX installation check
    þ Get number of cd-rom drives
    þ Get bibliographical filename                   *
    þ Get abstract filename                          *
    þ Get copyright filename                         *
    þ Get drive list
    þ Get device driver list
    þ Get MSCDEX version
    þ Get directory entry
    þ Get descriptor preference
    þ Get VTOC entry (Volume Table Of Contents)      *
    þ Absolute sector read
    þ Device driver requests
      þ Play audio
      þ Stop audio
      þ Head position (chaning)
      þ Audio channel info
      þ Media changed
      þ Get sector size                              *
      þ Get volume size                              *
      þ Get device status
      þ Get audio disk info                          *
      þ Get audio track info                         *
      þ Get UPC code                                 *
      þ Get audio status (playing/paused)

The entries marked with * are saved by a program called RIPCD into a file.
This file is then read back into memory when 0cd is installed. RIPCD reads the
data off the original cd so the data will appear to be authentic.

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