1 Aug
2004
1 Aug
'04
2:42 a.m.
From: "Philip Pemberton" <philpem(a)dsl.pipex.com>
What about using a GAL programmable logic chip?
Use CUPL's "lookup table" feature, use the 8 (or was it 9?) inputs on a
GAL16V8 as address inputs and use the outputs as data outputs. IIRC the
propagation delay for a normal GAL is 15nS, but you can get them in speeds
down to 7nS.
Isn't there a shortage of product terms? I thought there were only 8
product terms per output. Unless the data in the PROMs being replaced is
fairly regular, that doesn't seem enough to guarantee success.
Vince