Timo Sch=F6ler <wanker4freedom@web.de> writes:

> if so, the manual says that the Griffin Stealth uses the scca device

I'm using a GeeThree serial port in my G4/400 (essentially the same
thing), and scca is correct.

>=20
> is this sufficient?
>=20
>    #options 	DDB			# in-kernel debugger
>    #options 	DDB_HISTORY_SIZE=3D100	# enable history editing

Uncomment these. You're probably more interested in DDB than KGDB for
providing, say, backtraces from crashes.

> and uncomment (or add) the following three lines:
>=20
>    options 	KGDB		# remote debugger
>    options 	"KGDB_DEVNAME=3D\"com\"",KGDB_DEVADDR=3D0x3f8,KGDB_DEVRATE=3D=
9600
>    makeoptions	DEBUG=3D"-g"	# compile full symbol table
>=20
> is wonder because the remote debuggers' device name is 'com', and i
> don't know whether 0x3f8 fits in.

Those are i386-centric options - I'll see about noting that in the
kgdb.html documentation. If you want to run kgdb on a macppc system
with a serial port on scca, you could set KGDB_DEVNAME to "scca", but
it's the default, and KGDB_DEVADDR is not needed at all (on the x86,
it's the ISA I/O address of the port). KGDB_DEVRATE can be set if you
like; it defaults to 19200, and you'd rather run faster if you can -
(57600 might be the limit, but my console seems to run well at that
speed).

Recap: Just "options KGDB" is enough to get kgdb going on scca at
19200. But you probably want DDB instead.

        - Nathan