count8.fit

vhdl实现的计数器,可以从0记到999,该代码使用模块化设计思想,开发工具muxplus2

-- MAX+plus II Compiler Fit File      
-- Version 10.0 9/14/2000             
-- Compiled: 11/14/2008 15:03:46      

-- Copyright (C) 1988-2000 Altera Corporation
-- Any megafunction design, and related net list (encrypted or decrypted),
-- support information, device programming or simulation file, and any other
-- associated documentation or information provided by Altera or a partner
-- under Altera's Megafunction Partnership Program may be used only to
-- program PLD devices (but not masked PLD devices) from Altera.  Any other
-- use of such megafunction design, net list, support information, device
-- programming or simulation file, or any other related documentation or
-- information is prohibited for any other purpose, including, but not
-- limited to modification, reverse engineering, de-compiling, or use with
-- any other silicon devices, unless such use is explicitly licensed under
-- a separate agreement with Altera or a megafunction partner.  Title to
-- the intellectual property, including patents, copyrights, trademarks,
-- trade secrets, or maskworks, embodied in any such megafunction design,
-- net list, support information, device programming or simulation file, or
-- any other related documentation or information provided by Altera or a
-- megafunction partner, remains with Altera, the megafunction partner, or
-- their respective licensors.  No other licenses, including any licenses
-- needed under any third party's intellectual property, are provided herein.

CHIP "count8"
BEGIN

    DEVICE = "EPF10K10LC84-3";

    "clk"                          : INPUT_PIN  = 1      ;
    "reset"                        : INPUT_PIN  = 2      ;
    "sel0"                         : OUTPUT_PIN = 73     ;
    "sel1"                         : OUTPUT_PIN = 69     ;
    "sel2"                         : OUTPUT_PIN = 71     ;
    ":6"                           : LOCATION   = LC4_A19;  -- sel_temp2
    ":7"                           : LOCATION   = LC8_A19;  -- sel_temp1
    ":8"                           : LOCATION   = LC1_A19;  -- sel_temp0

END;

INTERNAL_INFO "count8"
BEGIN
	DEVICE = EPF10K10LC84-3;
    OD4P1   : LORAX = "1:FB4->LC4_A19,->LC8_A19,->LC1_A19|";
    OD1P2   : LORAX = "1:FB1|2:FH1R0,PA20R0C18->LC4_A19,->LC8_A19,->LC1_A19||";
    LC4_A19 : LORAX = "1:MSW3R0C19,HHR13R0->OH3R0P71|";
    LC8_A19 : LORAX = "1:MSW7R0C19,HHR35R0->OH7R0P69|";
    LC1_A19 : LORAX = "1:MSW0R0C18,HHR22R0->OH0R0P73|";
	LC4_A19 : LORAX2 = "OD1P2, LC4_A19, LC8_A19, LC1_A19";
	LC8_A19 : LORAX2 = "X, OD1P2, LC8_A19, LC1_A19";
	LC1_A19 : LORAX2 = "X, X, OD1P2, LC1_A19";
END;