Reading PALs

Jim Brain brain at
Tue Feb 21 18:38:10 CST 2017

On 2/21/2017 1:48 PM, Jecel Assumpcao Jr. wrote:
> Don't forget that 16L8 means 8 logic outputs and 16 inputs even though
> at first glance there only seems to be 8 inputs. That is because every
> output is also an input and can possibly be just an input by forcing the
> three state option.
One of the L8s uses an output as an input, but the design does not use 
any tristates or feedback on the L8s, so my job is easier.  The R4 and 
R6 are harder, though, as feedback is used on one, and both have registers.


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