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[/] [eco32/] [trunk/] [doc/] [history] - Diff between revs 197 and 204

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Rev 197 Rev 204
Line 1260... Line 1260...
the two bytes of every halfword are byte-swapped on the storage
the two bytes of every halfword are byte-swapped on the storage
medium! This error can only be discovered if the disk is written
medium! This error can only be discovered if the disk is written
with a non-ECO32 controller and read with the ECO32 controller,
with a non-ECO32 controller and read with the ECO32 controller,
or vice versa, which is the reason for the error hiding for so
or vice versa, which is the reason for the error hiding for so
long.
long.
 
 
 
06-Sep-2014
 
If the TLB hardware detects no matching entry on a "tbs" instruction,
 
it does an "or" of the MSB into the index register, in contrast to
 
the simulator, which sets the bit (and clears the bit if a matching
 
entry is found). In this way the MSB was never cleared automatically,
 
which led to strange behavior in the NetBSD kernel. Solved in favor
 
of the simulator.

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