Changes to V4.1 (03/05/94)
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* Fixed problem running System 6.x in 24 bit mode.

* Added support for programs that open the sound manager and then poke
  the ASC hardware directly.  We had never seen that trick before, but
  since our EMPLANT hardware is able to emulate the ASC, this was easy
  to add.

* Fixed support for v1.2 256K MAC ROMs.

* Added 040 compatible bus error handler.