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Keywords of the Source File

GAL16V8                         designates the GAL type
GAL20V8
GAL22V10
GAL20RA10

NC                              not connected (unused) pin
GND                             GROUND (=LOW)
VCC                             +5V    (=HIGH)
.T                              output pin is tristate output
.E                              tristate enable through product term
.R                              output pin is register output
=                               output pin is given an equivalence
+                               OR
*                               AND
/                               NOT
DESCRIPTION                     indicates the end of the Boolean equations
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