check for register modification - fpga implementation

[jtonfat]

hi,

I'm trying to make a logic that activated a bit when a a register value change. I will use this with a register bank(32 of 32bits).

My first attempt was to copy the register to another register and at each clock compare the value of both, but this consume lots of area.

Another idea i had, was to calculate the parity bit of each register and only register that bit then compare it with the actual.
I don't know if this would work.

Any with other idea??

Thanks,