Just an update on the Linksys WRT54GS router that I bought. I’m as yet too chicken to reflash it, but I did install BatBox on my system. It just creates a ramdisk and installs some basic software onto the system, including a simple telnetd so you can log in. If you look at /proc/cpuinfo, you get

system type             : Broadcom BCM947XX
processor               : 0
cpu model               : BCM3302 V0.7
BogoMIPS                : 199.47
wait instruction        : no
microsecond timers      : yes
tlb_entries             : 32
extra interrupt vector  : no
hardware watchpoint     : no
VCED exceptions         : not available
VCEI exceptions         : not available
dcache hits             : 4229955107
dcache misses           : 25173
icache hits             : 540860934
icache misses           : 4080842876
instructions            : 0

Nifty!