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Chapter 12: Emulator Error Messages
Address translation error; non-resident page: <address> (Error 172)
Address translation error; non-resident page: <address> (Error 172)
Cause: The error occurred when the monitor attempted to access memory with the
MMU enabled. You requested the monitor to display or modify memory, or you
tried to exit the monitor; the memory access generated an access fault resulting
from an MMU address translation failure. This error indicates that the address does
not have a valid translation.
Action: Display the address translation tables for the <address> given in the
message. You can display the MMU translations to see if the <address> is within
one of the translated ranges. You can display translation tables for the address, and
then you can view table details if one of the translation tables seems to be
misdirecting the translation of the address.
Address translation error; supervisor-only page: <address> (Error 172)
Cause: The error occurred when the monitor attempted to access memory with the
MMU enabled. You requested the monitor to display or modify memory, or you
tried to exit the monitor and the memory access generated an access fault resulting
from an MMU address translation failure. A user mode access was attempted to a
page that is only accessible in supervisor mode.
Action: Try your command again, but be sure to specify access in the supervisor
mode.
Address translation error; target bus error: <address> (Error 172)
Cause: The error occurred when the monitor attempted to access memory with the
MMU enabled. You requested the monitor to display or modify memory, or you
tried to exit the monitor; the memory access generated an access fault resulting
from an MMU address translation failure. The target system terminated a
tablewalk cycle with TEA (bus error).
Action: Verify that the SRP and URP registers point to the correct location in
memory where your address translation tables reside. If this is target memory, you
will need to determine why your target system asserts TEA.
505
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