Specifications

Table Of Contents
ARM Debugger 94 ARM specific SYStem Commands
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Disabling of this option may be useful for triggering on memory accesses from debug mode (only useful for
hardware developers).
This option is not available on the ARM10.
SYStem.Option DBGNOPWRDWNDSCR bit 9 will be set when in debug mode
Default: OFF.
If this option is on DSCR[9] will be set while the core is in debug mode and cleared while the user application
is running. SYStem.Option PWRDWN will be ignored.
This option is normally not useful. It was implemented for a special customer design.
This option is available on the ARM11.
SYStem.Option DBGUNLOCK Unlock debug register via OSLAR
Default: ON.
This option allows the debugger to unlock the debug register by writing to the Operating System Lock
Access Register (OSLAR) when a debug session will be started. If it is switched off the operating system is
expected to unlock the register access, otherwise debugging is not possible.
This option is only available on the Cortex-R and Cortex-A.
SYStem.Option DCDIRTY Bugfix for erroneously cleared dirty bits
Default: OFF.
Format: SYStem.Option DBGNOPWRDWN [ON | OFF]
Format: SYStem.Option DBGUNLOCK [ON | OFF]
Format: SYStem.Option DCDIRTY [ON | OFF]