ARM9TDMI™ Technical Reference Manual(Rev 3)
Home > Debug Support > Determining the core state and system state > Instructions which may have the SYSSPEED bit set

5.10.3. Instructions which may have the SYSSPEED bit set

The only valid instructions on which to set this bit are:

When the ARM9TDMI returns to debug state after a system speed access, the SYSSPEED bit is set HIGH.

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