Configuration register value: 0x
↓↑
Boot behavior: stay at bootstrap prompt boot first image in onboard flash/EPROM boot first image from boot variable (recommended) boot second image from boot variable boot third image from boot variable boot fourth image from boot variable boot fifth image from boot variable boot sixth image from boot variable boot seventh image from boot variable boot eighth image from boot variable boot ninth image from boot variable boot tenth image from boot variable boot eleventh image from boot variable boot twelveth image from boot variable boot thirteenth image from boot variable boot fourteenth image from boot variable
Unknown bit 4
Console baud rate: 1200 2400 4800 9600 19200 38400 57600 115200 (not all options are supported by all devices)
Ignore NVRAM contents (password recovery)
Disable boot messages
Disable break
Use secondary bootstrap (do devices still have this?)
IP broadcast with all zeroes
Boot default ROM software if network boot fails
IP broadcasts do not have net numbers
Enable diagnostic messages and ignore NVRAM contents
The most common configuration register value is 0x2102. Its derivative used for password recovery is 0x2142.