Linksys WRT54G hardware differences

This has been bothering me - there are 5 different hardware versions of the WRT54G wireless router (1.0, 1.1, 2.0, 2.2, 3.0) and many of the open firmware platforms like openwrt or sveasoft (The betrayer of the word open) only run on particular hardware versions. The main changes are the processor, amount of RAM/FLASH, the wireless hardware and the ethernet hardware

Check out all the differences here
http://www.linksysinfo.org/modules.php?name=Content&pa=showpage&pid=6

We have ordered three batches of Linksys hardware - I must check which hardware platforms we have

My Linksys on my roof gave the following results

Result of the command
$>cat /proc/cpuinfo

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 : 3472555964
dcache misses : 1631950511
icache hits : 264142837
icache misses : 2075639807
instructions : 0

Some of the possible clue NVRAM settings when running the command
$>NVRAM show

boardrev=0x10
bootver-v2.3
boardnum=42