Re: GALs and old PCBs

On Wed, 22 Feb 2006 11:02:40 +0000, matt wrote:

The board is okay as it works with the original 82S153 (which I can't
dump and don't have a replacement for - I'm testing the GAL on this
board but it will be going on another board (same type) as that one
has a bad 82S153).

Can't dump it? Can't you plug it into a breadboard, put a counter on
the inputs, and see what you get at the outputs?

Then you would at least have a truth table, unless it's got some kind
of embedded state machine or something. It'd also help to know if
the outputs are latched or anything. Is there a data sheet anywhere
on the 82S153?

Good Luck!
Rich

.

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