System Debug Reference Manual (32650-90888)

232 Chapter6
System Debug Command Specifications M-X
MPSW
MPSW
Privileged Mode
Modifies the NM processor status word (PSW).
Exercise a bit of care with this command.
Syntax
MPSW bit_string
Parameters
bit_string A string of characters that indicates which bits in the PSW are to be
modified. The letters listed below represent individual fields: lower case
implies turn the bit off, and uppercase implies turn the bit on. All
unreferenced bits remain unchanged. All named bits with the exception of
the "C/B" bits may be altered with this command. The IPSW has the
following format:
1 1 1 1 1 1 1 2 2 2 2 3 3
0 7 8 9 0 1 2 3 4 5 6 4 7 8 9 0 1
-----------------------------------------------------------------
|J| |T|H|L|N|X|B|C|V|M| C/B | |R|Q|P|D|I|
-----------------------------------------------------------------
J Joint instruction and data TLB misses/page faults pending
T Taken branch trap enabled
H Higher-privilege transfer trap enable
L Lower-privilege transfer trap enable
N Instruction whose address is at front of PC queue is
nullified
X Data memory break disable
B Taken branch in previous cycle
C Code address translation enable
V Divide step correction
M High-priority machine check disable
C/B Carry/Borrow bits
R Recovery counter enable
Q Interruption state collection enable
P Protection ID validation enable
D Data address translation enable