Cisco 12404 Installation And Configuration Manual page 180

Performing Other Configuration Tasks
Bit 8
Bit 9
Bits 10 and 14
Bits 11 and 12
Cisco 12404 Internet Router Installation and Configuration Guide
4-10
Bit 8 of the software configuration register controls the console Break key. Setting
bit 8 causes the system to ignore the console Break key. This is the factory default.
Conversely, clearing bit 8 causes the system to interpret a Break keystroke as a
command to halt normal system operation and force the system into ROM monitor
mode. Regardless of the setting of the Break enable bit in the software
configuration register, pressing the Break key during approximately the first five
seconds of booting causes a return to the ROM monitor.
Bit 9 is not used.
Bit 10 of the software configuration register controls the host portion of the IP
broadcast address. Setting bit 10 causes the processor to use all zeros in the host
portion of the IP broadcast address; clearing bit 10 (the factory default) causes the
processor to use all ones. Bit 10 interacts with bit 14, which controls the network
and subnet portions of the IP broadcast address.
effect of bits 10 and 14.
Table 4-4 Configuration Register Settings for Broadcast Address
Destinations
Bit 10 Bit 14 Address (<net> <host>)
Off Off <ones> <ones>
On Off <zeros> <zeros>
On On <net> <zeros>
Off On <net> <ones>
Bits 11 and 12 of the software configuration register determine the data
transmission rate of the console terminal.
four available data transmission rates. The factory-set default data transmission
rate is 9600 bps.
Chapter 4 Troubleshooting the Installation
Table 4-4 shows the combined
Table 4-5 shows the bit settings for the
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