====== WDC1772 FDC Framework ======

//13 November 2004//

Implemented:
  * Generic FDC register/read write including side effects
  * FDC emulation loop
  * Motor control
  * FDC registers, status
  * Disk rotation
  * FDC idle state
  * Signals to host hardware
  * ...and other related things.

Modified the interface to make running different types of FDC's possible in the future.