seg_trans.v

这个是华清远见 高级班 培训的 实验 代码

/****************************************Copyright (c)**************************************************
**                               Guangzhou ZHIYUAN ELECTRONIC CO.,LTD.
**                                      Research centre
**                         http://www.zyinside.com, http://www.zlgmcu.com
**
**---------------------------------------File Info-----------------------------------------------------
** File name:			seg_trans.v
** Last modified Date:	2005-12-13
** Last Version:		1.0
** Descriptions:		translate data code to seven segment code
**------------------------------------------------------------------------------------------------------
** Created by:			zhangjing
** Created date:		2006-2-14
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:			
** Modified date:		
** Version:				
** Descriptions:		
**
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
module seg_trans(
	data,
	seven_segdisp_enable,
	seg_code
	);
	input[7:0] 	data;
	input 	    seven_segdisp_enable;
	output[7:0] seg_code;

	reg[7:0] 	seg_code;

always@(data[3:0] or seven_segdisp_enable)
begin
	if(seven_segdisp_enable)
	begin
		case (data[3:0])
		4'h0:
			begin  //g f e d c b a
				seg_code ={data[4],7'b100_0000};  //"0"
			end
		4'h1:
			begin
				seg_code ={data[4],7'b111_1001};  //"1"
			end
		4'h2:
			begin
				seg_code ={data[4],7'b010_0100};  //"2"
			end
		4'h3:
			begin
				seg_code ={data[4],7'b011_0000};  //"3"
			end
		4'h4:
			begin  
				seg_code ={data[4],7'b001_1001};  //"4"
			end
		4'h5:
			begin
				seg_code ={data[4],7'b001_0010};  //"5"
			end
		4'h6:
			begin
				seg_code ={data[4],7'b000_0010};  //"6"
			end
		4'h7:
			begin
				seg_code ={data[4],7'b111_1000};  //"7"
			end
		4'h8:
			begin
				seg_code ={data[4],7'b000_0000};  //"8"
			end
		4'h9:
			begin
				seg_code ={data[4],7'b001_0000};  //"9"
			end
		4'hd:
			begin
				seg_code =8'b1011_1111;  //"-"
			end
		default:
			begin
				seg_code = 8'b1111_1111;
			end
		endcase
  	end
  	else
    begin
        seg_code = 8'b1111_1111;
	end
end

endmodule