Re: [ukvac] tech: Identify
> Hi can anyone identify a IC for me..
>
>
> PAL16L88CN 023KLP3
>
> many thanks
>
>
> Jcrs.
yep, that's a 16L88 PAL. (programmable array logic - i think it stands for)
easy to find, but they are programmable logic
so you can get a new one,
just need to burn it with the correct code. Unfortuantely... you can't read
the 'code' off the old ones as such.. they are one-time programmable, then
they act like any other logic chip....
try putting a 74ls157 in you programmer and try to 'read' it
that's the
problem.
if you have a bad one, or one that's missing, you need to find exactly the
same boardset with a good working one then reverse engineer it
easy peasy
you'll need a 16-20 input logic analyser and knowledge of how the fuck to
use it in order to work out how the PAL works, then write your own code to
program another PAL to mimmick it precisely
so you'll need a pal
programmer and knowledge of the language used, and a compiler too
its not straightforward, that's why they are used on a lot of boards for
decryption/security... once programmed, they're basically like a custom
chip..
good luck
maybe if you tell us what the chip is from, and the problem you have with it
then maybe someone else on here has already reverse-engineered it.. there is
one particular person that i know who has successfully done it
Andy
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