Seth Morabito ae0cad26e4 3b2: Make floppy controller a DEV_DISK device ...

- Formerly, the floppy controller buffered an entire diskette image
  in memory using the unit buffer, and flushed it out on detach or
  shutdown. This worked well enough, but it's better to have the
  device use the SIMH disk sector read and write routines and
  behave like a true disk.

- Read Only (Write Protect) logic has also been enabled in the
  floppy controller, allowing users to mount images that do not
  have write permissions.

- The IF (Integrated Floppy) and ID (Integrated Disk)
  device names were poorly chosen. They conflict with built-in
  scp commands and mess up the help system. This commit
  changes them to IFLOPPY and IDISK, respectively.

  NOTE!! THIS IS A BREAKING CONFIG CHANGE!!

2019-01-13 22:25:26 -08:00

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