Hi all , Can I sound out a thought on CAMs with the FTT? Please correct if
I've
mis-understood anything!

The CAMs can only be used to associate a tag with the pattern , and not to
generate the
actual 'co-ordinates'. This is because a CAM output is the address of any
internal data that
matches the input data. Each address is unique, so all output co-ordinates
would be unique.
To map many different patterns onto the same co-ordinate , which may be the
case, the
CAM needs to feed its output 'pattern #n' into a small RAM.

(This RAM was mentioned in passsing at the meeting but nobody seemed to know
what it's function was, until now !)

Secondary co-ordinate outputs could be generated in parallel by adding
further small RAMs
in parallel, (as required for Level 2).

I've attached a GIF drawing to show this. (of course this all looks easy at
20MHz ! )

Richard.