gates.pld

Atmel提供的GAL编译工具,对GAL芯片进行编写,以及可转换成机器码

Name            Gates;
Partno          CA0001;
Revision        04;
Date            9/12/89;
Designer        G. Woolhiser;
Company         Logical Devices, Inc.;
Location        None;
Assembly        None;
Device          g16v8a;

/****************************************************************/
/*                                                              */
/*      This is a example to demonstrate how CUPL               */
/*      compiles simple gates.                                  */
/*                                                              */
/****************************************************************/

/*
 * Inputs:  define inputs to build simple gates from
 */

Pin 1 =  a;
Pin 2 =  b;

/*
 * Outputs:  define outputs as active HI levels
 *
 */

Pin 12 = inva;
Pin 13 = invb;
Pin 14 = and;
Pin 15 = nand;
Pin 16 = or;
Pin 17 = nor;
Pin 18 = xor;
Pin 19 = xnor;

/*
 * Logic:  examples of simple gates expressed in CUPL
 */

inva = !a;              /* inverters */
invb = !b;
and  = a & b;           /* and gate */
nand = !(a & b);        /* nand gate */
or   = a # b;           /* or gate */
nor  = !(a # b);        /* nor gate */
xor  = a $ b;           /* exclusive or gate */
xnor = !(a $ b);        /* exclusive nor gate */