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The TRCIDR9 returns the number of P0 right-hand keys that the trace unit can use.
The TRCIDR9 is a 32-bit register.
The number of P0 right-hand keys that the trace unit can use.
|Number of P0 right-hand keys.|
Bit fields and details not provided in this description are architecturally defined. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.
The TRCIDR9 can be accessed through the external debug interface, offset