Lpc2000

> AFAIK the receive acceptance filters always have to be used. 
However, 
> those are very flexible and instead of selecting specific, single 
> messages to receive you can also specify ranges - so the range you 
> are probably looking for is something like 0x000 to 0x7FF to 
receive 
> all standard CAN messages.

If you set AFMR = 0x03, you can receive all messages.  AFMR = 0x03 
means that Acceptance Filter is not operational (AccOff) and All Rx 
messages are accepted on enabled CAN controllers (AccBP) (p. 207 of 
the User's Manual).

JT