Anyone got any idea what this trap is?  or what it does?  I've got a
potential SLOTMAN user with a Quadra-630, and the Q-630's ROM routine
for reading PRAM seems to want to invoke this trap.  My (older edition
of) Inside Macintosh doesn't seem to document this trap, so I don't know
how to emulate it or even to implement a dummy version.  :)

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| Paul Goyette      | Public Key fingerprint:    | E-mail addresses:        |
| Network Engineer  |   0E 40 D2 FC 2A 13 74 A0  |  paul@whooppee.com       |
| and kernel hacker |   E4 69 D5 BE 65 E4 56 C6  |  paul.goyette@ascend.com |
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