Warner Losh <im...@harmony.village.org> writes:
--- ddb.4 2001/03/09 03:07:53 1.12
+++ ddb.4 2001/05/01 03:46:07
@@ -522,6 +522,16 @@
.Sq Li :
and modifiers as described above.
.El
+.Sh HINTS
+If you have a machine with an ISA bus, then you can connect a pushbutton
+between A01 and B01 (CHCHK# and GND).
+Shorting thse two signals together causes an NMI, which
^^^^ <-- these?
+.Nm
+will catch and dump you into the debugger.
+Machines with outher buses, or other ways of generating an NMI can also
^^^^^^^ <-- intentional?
+provide a hardware solution to break into a hung machine.
+Some bridge chipsets do not actually generate a NMI on CHCHK#, so your
+milage may vary.
Other than that, looks good.
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4 messages in org.freebsd.freebsd-docRe: ddb addition review request 