/*****************************************************************************
 * 源文件:	bcd_ascii.vhd
 * 模块:   	BCD转ASCII
 * 版权:
 *         	copyright(c) 北京联华众科科技有限公司
 *						http://www.lianhua-zhongke.com.cn
 * 版本：  	version 1.0
 * 
 * 功能说明:
 *		   	4位BCD数转为ASCII字符0~F
 *
 * 端口说明:
 *	       	输出
 *			    ascii - ASCII字符
 *
 *			输入
 *			    bcd - 4位BCD数
 *
 *			参数
 *                无
 *
 * 变更记录: 
 *            2009.12.23, 新建
 *
 *****************************************************************************/
module bcd_ascii
(
    input [3:0] bcd,
    output reg[7:0] ascii

);
always@(bcd)
begin
    case(bcd)
            4'B0000: ascii <= 8'H30;
            4'B0001: ascii <= 8'H31;
            4'B0010: ascii <= 8'H32;
            4'B0011: ascii <= 8'H33;
            4'B0100: ascii <= 8'H34;
            4'B0101: ascii <= 8'H35;
            4'B0110: ascii <= 8'H36;
            4'B0111: ascii <= 8'H37;
            4'B1000: ascii <= 8'H38;
            4'B1001: ascii <= 8'H39;
            4'B1010: ascii <= 8'H41;
            4'B1011: ascii <= 8'H42;
            4'B1100: ascii <= 8'H43;
            4'B1101: ascii <= 8'H44;
            4'B1110: ascii <= 8'H45;
            4'B1111: ascii <= 8'H46;
            default: ascii <= 8'H30;

    endcase
end
endmodule