v {xschem version=3.4.5 file_version=1.2 * * This file is part of XSCHEM, * a schematic capture and Spice/Vhdl/Verilog netlisting tool for circuit * simulation. * Copyright (C) 1998-2023 Stefan Frederik Schippers * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA } G { a: process( G , D, RST ) begin if( RST = '1') then Q <= '0' after delay ; QN <= '1' after delay ; elsif ( G = '1' ) then Q <= D after delay ; QN <= not D after delay ; end if ; end process ; } K {} V {reg iQ; always @( D or G or RST) begin if( RST ) begin iQ <= 0; end else if(G) begin iQ <= D; end end assign #del Q = iQ; assign #del QN = ~iQ; } S {} E {} C {opin.sym} 280 -320 0 0 {name=p5 lab=Q} C {ipin.sym} 120 -320 0 0 {name=p2 lab=G} C {use.sym} 70 -720 0 0 {------------------------------------------------ library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all;} C {ipin.sym} 120 -440 0 0 {name=p14 lab=RST} C {opin.sym} 280 -440 0 0 {name=p1 lab=QN} C {title.sym} 160 -30 0 0 {name=l17} C {ipin.sym} 120 -380 0 0 {name=p3 lab=D} C {noconn.sym} 280 -320 2 1 {name=l4} C {noconn.sym} 280 -440 2 1 {name=l1} C {noconn.sym} 120 -440 2 0 {name=l2} C {noconn.sym} 120 -380 2 0 {name=l3} C {noconn.sym} 120 -320 2 0 {name=l5}