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User’s Manual
Preliminary PPC440x5 CPU Core
debug.fm.
September 12, 2002
Page 247 of 589
8.6.8 Debug Data Register (DBDR)
The DBDR can be used for communication between software running on the processor and debug tool hard-
ware and software. The DBDR can be written from a GPR using mtspr, and can be read into a GPR using
mfspr.
Figure 8-8. Debug Data Register (DBDR)
0:31 Debug Data
0 31