DEVICE		16V8;
TITLE		PASSWORD;
NAME		C.;
SIGNATURE	PASSWORD;

/*
 *   This example can be found on page 5-48 in the GAL handbook.
 */

PIN	1	=	CLK;
PIN	2	=	I1;
PIN	3	=	I2;
PIN	4	=	I3;
PIN	5	=	I4;
PIN	6	=	I5;
PIN	7	=	I6;
PIN	8	=	I7;
PIN	9	=	I8;
PIN	10	=	GND;
PIN	11	=	OE;
PIN	12	=	S1;
PIN	13	=	S0;
PIN	14	=	HOLD;
PIN	15	=	R4;
PIN	16	=	R3;
PIN	17	=	R2;
PIN	18	=	R1;
PIN	19	=	CODE;
PIN	20	=	VCC;


 CODE    = I8 & !I7 & I6 & !I5 & I4 & !I3 & I2 & !I1;
 CODE.OE = S1 & !S0;

!S0.D   =  S0 & HOLD
        | !S0 & !HOLD;

!S1.D   =  S1 &        HOLD
        | !S1 &  S0 & !HOLD
        |  S1 & !S0 & !HOLD;

!HOLD.D =  S1 &  S0 & !R4 & !R3 & !R2 & !R1
        & !I8 & !I7 & !I6 & !I5 & !I4 & !I3 & !I2 & !I1
        | !S1 & !S0 &  I1 &  I2 &  I3 &  I4 &  I5 &  I6 &  I7 &  I8
        | !S1 &  S0 &  R4 &  R3 &  R2 &  R1
        |  S1 & !S0;

!R4.D   =  S1 &  S0 & !R4 &  I4
        |  S1 &  S0 &  R4 & !I4
        | !S1 &  S0 & !R4 &  R3 &  R2 &  R1
        | !S1 &  S0 &  R4 & !R3
        | !S1 &  S0 &  R4 &       !R2
        | !S1 &  S0 &  R4 &             !R1
        |  S1 &  S0 & !R4 & !R3 & !R2 & !R1 & HOLD;

!R3.D   =  S1 &  S0 & !R3 &  I3
        |  S1 &  S0 &  R3 & !I3
        | !S1 &  S0 & !R3 &  R2 &  R1
        | !S1 &  S0 &  R3 & !R2
        | !S1 &  S0 &  R3 &       !R1;
 
!R2.D   =  S1 &  S0 & !R2 &  I2
        |  S1 &  S0 &  R2 & !I2
        | !S1 &  S0 & !R2 &  R1
        | !S1 &  S0 &  R2 & !R1;

!R1.D   =  S1 &  S0 & !R1 &  I1
        |  S1 &  S0 &  R1 & !I1
        | !S1 &  S0 & !R1;