|Subject:||mtc0/eret hazard for the R4600, R4700, and R5000|
|From:||firstname.lastname@example.org (William J. Earl)|
|Date:||Mon, 3 Jun 1996 10:12:20 -0700|
We recently noticed an error in the CP0 hazard table for the above processors. Specifically, the eret row in the table in Appendix F is incorrect. There must be two instructions between an mtc0 which changes a register read by eret and an eret, not just one. This is not normally a problem, but it does mean that one must keep the mtc0 which restores $epc far enough away from the eret.
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