TODO.txt

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              Required Features
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0%	Support for multiple JTAG-DP TAPs, such as might be found on
	boards with several SoCs, with their JTAG signals chained.

0%	Tidy up the shell and its command line parsing. It's a mess.

0%	Investigate ARMv8M stack limit exceptions. It's likely we're not
	dealing with them very well, both on the debugger side and the
	internal 'fatal trap' handler.

0%	Use the new target event framework to update display and JSON.
	In fact, generalise the event framework to become a system-wide
	global event framework.

0%	Announce firmware variant (AVR/ARM/...) on the display at startup.

0%	Button press while in Provisioning mode should do something! As in,
	disable the screensaver.

99%	Fix network IP configuration. It's completely disorganised just now
	as a result of the accumulation of backend drivers over the years.
	So we need a better API which better reflects the diversity of
	build options.


-===========================================-
               Nice to Have
-===========================================-
0%	Enhanced Multi-core support.
	 - Symmetric SMP with identical (or near identical) cores.
	   Single Gdb server instance, with thread support. Each core
	   is treated as a separate thread.
	 - Other SMP, either asymmetric or non-identical cores.
	   A Gdb server instance per core, no thread support.

0%	Read/Write via adiv5_mem_ap_setup_address() doesn't deal with DPs
	which have fixed word-size transfers. We need a fallback for
	those devices (which are probably old, but you never know).

0%	Display driver re-write. Some thoughts:
	 - Ditch u8g in favour of a framebuffer.
	 - Replace u8g primitives/fonts with home-brewed bits.
	 - Refresh entire display when necessary, using DMA direct from RAM.
	 - Ditch the 'tap' code; it's vestigal anyway.