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* Battery-backed clock is different on A3000.  Use battclock.resource to
  access the real-time clock if battclock.resource can be opened.

* A 68030 hardware characteristic causes longword-aligned longword
  writes to allocate a valid entry in the data cache,  even if the
  hardware area shouldn't be cached.  This can cause problems for IO
  registers and shared memory devices.  To solve this: 1) Don't do that 2)
  Flush the cache or 3) Use Enforcer Quiet.  See the Motorola 68030 manual
  under the description of the Write Allocate bit (which must be set for
  the Amiga to run with the Data Cache).

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