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Speaker 的代码
speaker.c
#include
#define SpeakerBit 0xdf
void SpeakerOpen( void ){ P2 &= SpeakerBit; }
void SpeakerClose( void ){ P2 |= SpeakerBit^0xff; }
void Midi( unsigned char sound, unsigned char time )
speaker.lst
C51 COMPILER V6.23a SPEAKER 02/21/2005 22:30:46 PAGE 1
C51 COMPILER V6.23a, COMPILATION OF MODULE SPEAKER
OBJECT MODULE PLACED I
speaker.asm
TITLE Speaker Demo Program (Speaker.asm)
; This program plays a series of ascending notes on
; the PC speaker.
; Last update: 10/8/01
INCLUDE Irvine16.inc ; 16-bit Real mode prog
speaker.vhd
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
ENTITY Speaker IS
PORT ( clk1 : IN STD_LOGIC;
Tone1 : IN INTEGER RANGE 0 TO 16#7FF#;
SpkS : OUT STD_LOGIC );
END;
A
speaker.c
/* ============================================================ */
/* File: SPEAKER.C */
/* */
/* Copyright (C) 2001, Daniel W. Lewis and Prentice-Hall */
/* */
/* Purpose: Lib