How exactly do PAL chips get programmed?

[Brad Parker]

Jules Richardson wrote:
>Tony Duell wrote:
>
>1) What's the most sensible format to use, and

jedec files.  it's a standard.

>2) Is it possible for a PAL to fail reading in such a way that the data you 
>get out is junk - but not *obviously* junk to the user? (if I go around 
>backing PALs up I'd like to know for sure that the backups are good - but 

you'll know.  I think it will read all ones.

And it's possible to back out some crude verilog automatically for
smaller pals.  I think Icarus verilog has a tool to do this.  I recall
doing it for a simple 16L8.

-brad