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Exception Processing
8-24 M68060 USER’S MANUAL MOTOROLA
PF—Page Fault
0 =Fault not due to an invalid page descriptor.
1 =Fault due to an invalid page descriptor.
SP—Supervisor Protect
0 =Fault not due to user process accessing a page that is supervisor protected.
1 =Fault due to user process accessing a page that is supervisor protected.
WP—Write Protect
0 =Fault not due to a write access on a write-protected page.
1 =Fault due to a write access on a write-protected page.
TWE—Bus Error (TEA asserted) on Table Search
0 =Fault is not caused by a bus error during any MMU table search read or write.
1 =Fault is caused by a bus error during any MMU table search read or write.
RE—Bus Error (TEA asserted) on Read
0 =Fault is not caused by a bus error on a read cycle.
1 =Fault is caused by a bus error on a read cycle.
WE—Bus Error (TEA asserted) on Write
0 =Fault is not caused by a bus error on a write cycle.
1 =Fault is caused by a bus error on a write cycle.
TTR—TTR Hit
0 =Fault is detected on an access that is mapped by the a paged MMU translation or a
default TTR translation.
1 =Fault is detected on an access that is mapped by one of the four TTRs.
BPE—Branch Prediction Error
0 =Fault is not caused by a branch prediction error.
1 =Fault is caused by a branch prediction error.
Refer to 8.4.7 Branch Prediction Error for details on this error type.
SEE—Software Emulation Error
0 =Fault is not caused by a software emulation error.
1 =Fault is caused by a software emulation error.
The processor does not set the SEE bit. This bit is used by the M68060SP to indicate a
software emulation error case. Refer to Appendix C MC68060 Software Package for
details on how this bit is set.
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