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I think the four bits in that nibble denote an ORed mask of pointer types. B'1000' = system pointer B'0100' = instruction pointer B'0010' = space pointer B'0001' = data pointer I think LQ throws an exception if the source pointer is not one of the types in the nibble. +--- | This is the MI Programmers Mailing List! | To submit a new message, send your mail to MI400@midrange.com. | To subscribe to this list send email to MI400-SUB@midrange.com. | To unsubscribe from this list send email to MI400-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: dr2@cssas400.com +---
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