clock.pld

GAL编译工具(Atmel提供)

Name            Clock;
Partno          ;
Revision        01;
Date            8/11/95;
Designer        PLD Expert;
Company         Atmel Corp.;
Location        None;
Assembly        None;
Device          F1500;

/* Example showing clock usage */

pin 43 = clk;
pin [4,5,6]= [a, b, c];
pin 7 = clken;

pin [41,14,24] = [y0..2];

/* EQUATIONS */

y0.d   = b;
y0.ck  = clk;      /* Use global synchronous clock */

y1.d   = !b;
y1.ck  = !a & c;   /* Use local asynchronous
                      clock product term */

y2.d   = b;
y2.ce  = clken;    /* Gated Clock Enable */
y2.ck  = clk;
y2.ar  = a;