On 29 Sep 2011 at 16:01, Alexandre Souza - Listas wrote:
  > I
brute-forced a HAL10L8 last week, using a PC and a little board
> consisting of a couple LS393 ripple counters and an LS151 8-way mux
> to serialize the data.  Manuipulation was done with 2 data bits and
> one status bit from a printer port.  
     May I know more about that? :o) 
 
My intent in the next couple of weeks is to blog it on Erik's VC
site.  But as Dave says, combinatorial logic is pretty easy.  Digging
inside of a GAL can be very challenging indeed if the security fuses
are blown (and on most commercial gear, they are).
--Chuck