--- 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.
+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?
+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.