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这是一个和proteus结合的 使用gal的实例 和好噢

module P16v8r
title 'P16v8r'
U4 device 'p16v8r';
clk,oe PIN  1,11;
A15,A14,A13,A12,A11,A10 PIN 7,9,2,3,4,6;
U9,MAX691,U8,U5,U7CS,LCDRW,U7OE,LCDE  PIN 12,13,14,15,16,17,18,19 ;
H,L,X,z,d=1,0,.X.,.z.,.D.;
address=[A15,A14,A13,A12,A11,A10,X,X,X,X,X,X,X,X,X,X];
out=[U9,MAX691,U8,U5,U7CS,LCDRW,U7OE,LCDE];
@dcset
EQUATIONS
[U9,MAX691,U8,U5,U7CS,LCDRW,U7OE,LCDE].CLK=clk;
out.oe=!oe;
EQUATIONS
!U5      :=(address<=^h7fff);
!MAX691  :=(address<=^h7fff);
!U7CS    :=(address>=^h8000)&(address<=^hdfff);
!U7OE    :=(address>=^h8000)&(address<=^hdfff);
!U9      :=(address>=^he000)&(address<=^he7ff);
!U8      :=(address>=^he800)&(address<=^hefff);
!LCDE    :=(address>=^hf000)&(address<=^hffff);
!LCDRW   :=(address>=^hf000)&(address<=^hffff);

@page
TEST_VECTORS
([clk,oe,address]->[U9,MAX691,U8,U5,U7CS,LCDRW,U7OE,LCDE])
 [d,1,^h0000]->[H,L,H,L,H,H,H,H];
 [d,1,^H003F]->[H,L,H,L,H,H,H,H];
 [d,1,^H7FFF]->[H,L,H,L,H,H,H,H];
 [d,1,^H8000]->[H,H,H,H,L,H,L,H];
 [d,1,^HA000]->[H,H,H,H,L,H,L,H];
 [d,1,^HDFFF]->[H,H,H,H,L,H,L,H];
 [d,1,^HE0A0]->[L,H,H,H,H,H,H,H];
 [d,1,^HE80A]->[H,H,L,H,H,H,H,H];
 [d,1,^HF0FF]->[H,H,H,H,H,L,H,L];
 [d,0,^hf000]->z;
end  P16v8r