电子实验数字跑表

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1、电&科就丈曇基于FPGA的数字系统设计数字跑表的设计学生姓名:学号:指导教师:摘要木文利用XILINX-ISE开发软件和XILINXEDA教学实验开发板实现数字跑表的开始、暂停以及复位等功能。ISE工程利用VHDL语言编写，单模块包含时钟分频进程、始能及清零进程、时钟数据产生进程、位码产生进程和显示进程；分模块设计包含时钟分频模块、控制模块、计数器模块、显示模块。计时区间00'00''00到59'59''99。课余设计的单模块源程序：libraryIEEE;useIEEE.STD_L0GIC_1164.ALL;useIEEE.STD_LOGIC_ARITH.ALL;useTREE.

2、STD_LOGTC_UNSTGNED.ALL;UncommentthefollowinglibrarydeclarationifinstantiatinganyXilinxprimitivesinthiscode.—libraryUNISIM;--useUNTSTM.VComponents.al1;entitypaobiaoisPort(clkin:inSTD_LOGIC;enable:inSTDLOGIC;clear:inSTDJ.OGTC;scg:outSTD_LOGIC_VECTOR(7downto0);wei:outSTD_LOG1C_VECTOR(2downto0);en

3、out:outSTDLOGIC);endpaobiao;architectureBehavioralofpaobiaoissignalcntlOO:integerrange1to240000;signalcntlk:integerrange1to24000;signalclklOO:std_logic:=，0’•signalclklk:std_logic:二'O'•fsignalcn:std_logic:=O';signaldl:integerrange0to5:=0;signald2:integerrange0to9:=0;signald3:integerrange0to5:二0

4、;signald4:integerrange0to9:=0;signald5:integerremgc0to9:=0;signald6:integerrange0to9:=0;signalnum:integerrange1to6:=1;beginenout<=，O';process(elkin)beginifclkin，eventandclkin二T'thenifent100=240000thencntl00<=l;clkl00<=notclklOO;elsecntlOO<=cntlOO+l;endif;ifcntlk=24000thencntlk<=l;clklk<=notclk

5、lk;elsecntlk<=cntlk+l;endif;endif;endprocess;process(enable,clear)beginifclear=，0"thenen<=0,;elseifcnablc，eventemdcnable=，1'thenen<=noten;endif;endif;endprocess;process(clear,dl,d2,d3,d4,d5,d6)beginifcleai'二'O'thendl<=0;d2<=0;d3<=0;d4<=0;d5〈二0;d6<=0;一cn<=0;elsethenifen二’1'andclklOO'eventandclk

6、lOO二’1ifd6二9thend6<=0;ifd5=9thend5〈二0;ifd4二9thend4<=0;ifd3=5thend3<=0;ifd2=9thend2<=0;ifdl二5thendl<=0;elsedl<=dl+l;endif;elsed2<=d2+l;endif;elsed3<=d3+l;endif;elsed4<=d4+l;endif;elsed5<=d5+l;endif;elsed6<=d6+l;endif;endif;endif;endprocess;process(num)beginifclklk'eventemdclklk二'1'thenifnum=6th

7、ennum<=l;elsenum<=num+l;endif;endif;endprocess;process(num)、、IO2OOOO、II〉8①s、、soooooo、b〉#s、、二二Iooo、、20s、、300003、ll〉boes、、102020、

8、

9、〉8瞬、、I00II00r2①s、、s二oooo、b〉#s、、IOIOOIOO、、20S、、三曙、、二000000、

10、

11、〉8瞬IICMPIIegII寸PIILOPII9PIICO4epCOPco4COe户ep0户C