IDEDOS 0.90 patch 51

New maintenance release is out for 0.90 because of the ntsc JiffyDOS timing issue, and anyway there were some pending changes over the years. The changelog:

• JD protocol timing adjusted to handle NTSC in manager 
• disabled write cache default (can cause corruption on power loss) 
• progress bar in manager was sometimes wrong for long directories 
• set pio0 transfer setting and remember it (for some hardware) 
• drive detection updates, hope it's not worse now than before 
• use reset for recovery (fixes hang after interrupted transfers) 
• don't spin up power saving drives when changing timers 
• invalidate drive after direct write (consistency after filesystem creation) 
• change geometry handling, some new drives don't like CHS at all 

  http://idedos.ide64.org