Albatron Technology ARM11/Cortex-A8 user manual Soft, Breakmode Hard, Core, Ahb

bdiGDB for GNU Debugger, BDI2000 (ARM11/Cortex-A8)			User Manual 29
BREAKMODE mode	This parameter defines how breakpoints are implemented.
	SOFT	This is the normal mode. Breakpoints are implemented
		by replacing code with a BKPT instruction.
	HARD	In this mode, the breakpoint hardware is used. Only 6
		breakpoints at a time are supported.
	Example:	BREAKMODE HARD

MEMACCES mode [wait] For Cortex-A8, this parameter defines how memory is accessed. Either via the ARM core by executing ld and st instructions or via the AHB access port. The current mode can also be changed via the Telnet interface. The optional wait parameter allows to define a time the BDI waits before it ex- pects that a value is ready or written. This allows to optimize download performance. The wait time is (8 x wait) TCK’s in Run-Test/Idle state.

The following modes are supported:

	CORE	The CORE (default) mode requires that the core is halt-
		ed and makes use of the memory management unit
		(MMU) and cache.
	AHB	The AHB access mode can access memory even when
		the core is running but bypasses the MMU and cache.
	Example:	MEMACCES CORE 5 ; 40 TCK's access delay
SIO port [baudrate]	When this line is present, a TCP/IP channel is routed to the BDI’s RS232
	connector. The port parameter defines the TCP port used for this BDI to
	host communication. You may choose any port except 0 and the default
	Telnet port (23). On the host, open a Telnet session using this port. Now
	you should see the UART output in this Telnet session. You can use the
	normal Telnet connection to the BDI in parallel, they work completely inde-
	pendent. Also input to the UART is implemented.
	port	The TCP/IP port used for the host communication.
	baudrate	The BDI supports 2400 ... 115200 baud
	Example:	SIO 7 9600 ;TCP port for virtual IO
DCC port	When this line is present, a TCP/IP channel is routed to the ARM debug
	communication channel (DCC). The port parameter defines the TCP port
	used for this BDI to host communication.You may choose any port except
	0 and the default Telnet port (23). On the host, open a Telnet session using
	this port. Now you should see the DCC output in this Telnet session. You
	can use the normal Telnet connection to the BDI in parallel, they work
	completely independent. Also input to DCC is implemented.
	port	The TCP/IP port used for the host communication.
	Example:	DCC 7 ;TCP port for DCC I/O

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