Cisco PRP-1= Installation And Configuration Manual page 60

Additional Configuration and Maintenance Tasks
mode. Regardless of the setting of the Break enable bit in the software
configuration register, pressing the Break key during approximately the first 5
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.
Table 11
Table 11
Bit 14
Off
Off
On
On
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.
Table 12
Bit 12
0
0
1
1
Performance Route Processor Installation and Configuration Guide
60
shows the combined effect of bits 10 and 14.
Configuration Register Settings for Broadcast Address
Destination
Bit 10 Address (<net> <host>)
Off <ones> <ones>
On <zeros> <zeros>
On <net> <zeros>
Off <net> <ones>
System Console Terminal Data Transmission Rate Settings
Bit 11 Data Transmission Rate (bps)
0 9600
1 4800
0 1200
1 2400
Table 12 shows the bit settings for the
OL-11656-01