There is some rudimentary DDB support for the Sparc in NetBSD-current. It
requires that the bootblocks load the kernel symbols into memory.

The L1-A sequence is used to get to the debugger prompt; from there you can
get to the PROM by typing `machine prom'.

Instruction disassembly is not yet implemented.

The bootblocks themselves currently work only with version 2 PROMs (which
is nasty, since I have at the moment only an oldish IPC to experiment with).

Anyone know how old version 0 PROMs are supposed to work?

-pk

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