Protel99编写GAL16V8简单的逻辑太好使！参照Protel99安装目录下的Design Explorer 99 SE\Examples\Pld\Reference的列子，编写了一个逻辑电路。经过实际测试结果和设计意图一直。
.pld文件内容如下：
Name gal;
Partno ;
Revision 01;
Date 8/11/95;
Designer GAL16V8;
Company None;
Location None;
Assembly None;
Device g16v8;
/* Simple combinatorial logic:*/
pin [2,3,4] = [a, b, c];
pin [19,18,17] = [x ,y ,z];
x = a & b;
y = !a # !b # c;
z = !a # !b # !c;