Re: C64A 82S100 JED?

From: dave_m <dmercado11_at_att.net>
Date: Sun, 24 May 2020 11:47:56 -0500 (CDT)
Message-ID: <1590338876981-0.post_at_n4.nabble.com>
Gentlemen,
Another issue with that JED file is that there are no test vectors included
in the file. That means there can be NO verification of proper output states
after fusing. The Verification test may pass, but nothing is really tested. 

The output pins can not be tested by the PLA Programmer without test
vectors. Any output pin may be dead and no one can tell after fusing.  The
first 'test' then is when the PLA is placed on the board and run
operationally. 

If someone has a Truth Table of the 16 inputs vs the 8 outputs for all 48
Product Terms, the Test Vectors can be created.



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Received on 2020-05-30 01:49:13

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