?????è??????(HDL)???ù???????°??????

?? ·????±????2004-02-17 17:30:05 ????×÷???????ó?? ±à??


   ??×???×??????è??×?????(EDA)?????ó??????±à???????÷?????ì??·????????à??????×???????·??¤?????????????°,???????????????????à??·??í???¤???????????è??????(HDL)?????°HDL????????????EDA????×??¤????±??????????¤????±????é?????????????????è?????????ú?·???????°????·?·¨??

   ?????????è???????¨HDL??????????·???·????ê?????°±????è?????¨?ì???ù?ú????????????×????·?????????÷???÷????????????·????÷?????ù?è???????·????????·????·???????????ó?ó???????è??????±????±????

   ?????ú????????×??¤????????????????????????????????·????????±???à°??ú???§???????÷??????×??¤?????±???????????ú?¤???????¤????????·????????????í?ú??????????×??????ó?????????÷?????°???????à???????·???????ú?÷°???·????????°??????????·?????×??ò???ü?????ü???×???¨?ú??·??¤?????§?????§??????????·??¤×÷??

   ???ê?????????ú?è????±à?????±????×??÷???§???????°???????¤?????????????è?????±???ú?ú??°é?????¨?????¨???????????????????ù???????è???????¨HDL??????????????????±ê???????????·??±à?????è?????á????????????×???±í???????÷???·???????????·?????????ú·?????×??????í???¤????

   ?±?°???????ó?à??CAD?¨?????ú?¨?ú?è??????CAE?¨?????ú?¨?ú?¤??????CAM?¨?????ú?¨?ú???ì???¤???í???????÷×?ר???ì?ò???????????????????°???à?????????????????è??????·????????????????÷????°????÷?????????ò?????????×??????????ר?????¤?????ò??????×??¤???????±???°??????·?·¨?????????????÷?????????????????????????????¤?????±??????????·?????±????±????

HDL??????

   HDL?????è????·?????????×??????????????????????????????????????????·?±?????é?ê?????à?????????·°?????????????×???????HDL???÷????×÷???ó?????????????·?¨ASIC??????????±à?????ó???¨FPGAS????HDL?á???????????è???????????????÷?·???ò?????è??·?·¨??°ü?¨?????????ù±??????ò?????è???????????????????è??????·??????????è???????ú?·?????ó?????ú?ú?°????·?±??????÷???????°?????????????????????????ì?é??·?·???±ê×???HDL???á???è??×???·?·¨??????×????ú?ú?????è??????

   ???????à??HDL??????×???????????Verilog ??HDL???°?????????????·HDL???¨VHISC-HDL???ò?ò??VHDL????????????????ISP??UDLI??ABEL??HILO????

HDL???ú?·

   ???????????è??????????Gordon C.Bell??Alan Newell??Carnegie Mellon?ó?§?á????????????DEC??????PDP-8?????ú????????·???HDL????ISP???±?±???°?ì?????ó??

   ????HDL???????è?ó?????????ú?ú·??????????ó??????×??????????±??·??????????????????á?????????????????????·?è?????????±??·??§?????ú·?????1980?ê???????ó???????????×????????×?????·????á?????·?è?????????ê?????????á????????????????????????????°?±?????VHDL??????IBM??Intermetrics??TI???????ú·???×??ú????·???????3??????±????????¨????±à??????±ê×???

   ???ú??????×??¤???????á?¨IEEE???????????¨???ò?????ú??±ê×??ò??×??ó??????×é????IEEE????VHDL±í???????¤?????????¨??VHDL???ú??±ê×???????1987?ê±??·?¨??IEEE1076-1987±ê×??????ó??????????±???????????????????°?±?±?????1076-1993??VHDL???±?????ü??±ê×??¨454????ANSI±ê×?????1988?ê?????????ú???????¨?ù??ר?????????·??±????????à????VHDL???÷??

   1984?ê??GDA??×???????·?±í????Phil.R.Moorby??·???????????HDL??????Verilog HDL??Verilog???????????°???ó???è???????????????????????±?????÷???è?????????·?????ú?ú?§???±±???×??????????÷??GDA??????·???·????÷??????????·??ú????????×÷???à??????????????????????VerilogXL???ò???ü????XL??·¨?????í?è???????????·?????????è????????????Verilog??????ר????????????????±?±ê×?????×÷??????????????·??????????????????????????ò?????í???????????ò?????????????????????????§??±???

   1990?êCadence?è????????????????GDA????????????????Verilog HDL??Cadence????×÷????·???????·????÷???ú??Verilog??Cadence??????????·?±í??Verilog?????????????????????à???ù????????????·????÷????????????·????÷??????????????????????????±ê×???????×????¨??·?Cadence?????ú?ú??Verilog±à??·????÷VCS??Chronological·?????????·????????÷????±?????VCS??????±à???÷????VerilogXL?ò???????÷??

   ?±Verilog?????°??PLI?¨????×é°??ú????Verilog????±à???????????ò????????·????¨??????????????ר??±??¤?±????·???Verilog?ú??×é???¨OVI????1999?ê?????????????¨?ú??±ê×???OVI×÷????????????????Cadence?????á???????????????á?¨LRM????°??ú??????????????±ê×???OVI±??????ü????Accellera????±í???????????ù?????è??×????????í????????????????·????ù±???±í???ó??????IEEE1364-1995±ê×???Accellera????????·??????÷????±ê×??¨SDF??????????????????????IEEE1497-2001±ê×???

   ?è????±??á?????í????×é??????1989?ê????????×??è??×????????á?¨EDAC??????×?????EDA?¤????°?????????????EDA?????ò???????????????????????????ü????EDA???á??×é???????±??????????EDA?¤???????ú±í??

????VHDL??Verilog

   ???????????¤?????????????à???????è??????????????×????????????ù????VHDL??Verilog?????????ù???°???ù±????í??±í??·?·¨???????????????à???????????é?????????°?ù?????????????ú??±ê×?????????×?????????±ê×??????????á????????????×é???ù??????????????????????????×????????????????ì?ò???????? Verilog??·???·??????????????ü??????????????·????????è??????VHDL???ì??????3??????·??????è?????????è???????????á·??ú?ó??????·???????????????

   ???è???é?ó??????·??????????????????????????????????á???è???±?á??????????????????PLI??Verilog×÷?á???è??±??????×??PLI??±à?????????????ü????×é??°??ú????·?????C??????????PLI?????????????±?????????????????????????¤×÷??PLI??HDL????×÷????±à????????API??×÷???à????

   VHDL?????ò?ò????±?±à???¨???????à??°???·?±?×÷??????????????±à?????????ó?à??Verilog???ò?????????????????±?°??????????????????????±ê??????·???±à???÷??????VHDL?§?????·°??????í?????ù?????ò??·????à???????ò?????????·°??°?????????????è???????????????·°??±±????é????????Verilog?·???????????°????±???·??????????·?????????????ó??C?????????ù°ü???????é????VHDL????Verilog???????ì?ò??????????·????í·?????????Verilog????×÷????????VHDL?????·??????????×????????????????????§???ù????????·???Verilog?????????????????ò??Verilog????±?VHDL?ü?à???????¤???????ò????Verilog??VHDL±ê×?±???·????????°??????????????±???????·????÷??????Cadence??????Verilog???????????ò???????????????¤VHDL??

   ????±í?÷????????±à????·???·???????????????Verilog±?????VHDL?????ü?ì???ê???è??????????????????????EDI??ASIC?è???????????ù×?????±????é??±í????????????9??????Verilog???è????????8??°??±?ê???????????????è??????????VHDL???è???????????????ê????????????

??????????HDL

   ????°??????????ó?????¨???·???è???????§??±????á??VHDL???è???????????????????è?????????????????à?????ò???????÷????
?×????????VHDL??±ê×????????????ú?????????????×?ü???????·?è????????±??????í??ר????????

   ??????????????????????·?±??è???????ù???????¨??????????×é???ê???????±·??????¨?±????±?±??????ù???????ó?ó???ì???·?è????????

   ??×?·????÷???????????è????×÷°??ó???ù?ú????????·?±??????????·?????????????í?ó??

   ×??ó??????????HDL????±à???????ò?ò???é??C?òPASCAL???ò???ù???????×?í????

HDL???ù±????ò

   ????????HDL????????Verilog??VHDL?÷×??????????ó?????????????????????????ù±???·¨???ò???????ò???????????????ú???í????±í??·?·¨??

   VHDL????VHDL??&#39????&#39??×??????è?????????????????????????è??????????×????ò??????????±?????°????÷???????÷????????????????°????÷???·????1???????ò????°????÷???·??VHDL???????·???è????????

   ?????ú??±í???????ó????Verilog ???ú??????±??????????????????????ò?????í??????????×é??????????????±??????????????????ò????°ü???????ò?à??????????????°ü?¨&#39???????÷&#39(entity declaration)??&#39?á????&#39(architectural body)????·??????????÷???????????????è?????????????????????????á?????ò?è???????????????á????°ü????????·??è???????????????????????ò??????·??????????????????????ò??????????°????÷?è?????á??????????

   ??VHDL?????è???????????????è????????????&#39???????÷&#39?¨configuration declaration ???????????è?????????á???????????????????????ò°ü???÷?¨package declaration????°ü????×é???í?à????×??à?????????????????÷?????ò°ü???¨package body???????????ò°ü????×????ò?¨????VHDL???í?è?????????ò?ì??±í?????????á?????????÷????????·????????ó??

   Verilog HDL????Verilog????×??????è????????&#39???é&#39?????????é??????????·??????????????????¨???????????é?ú??±í??

   ?????ú??±í????????±ê??&#39#&#39????????&#39#&#39±í?????????¨???????????±??????????VHDL???ù??Verilog???í?è?????????ò?ì??±í?????????á?????????÷????????·????????ó???±???é?????????á?????é?±?????????á???à?????±???????ò???????????????±?????????????÷?à?????????????ò?á???±?????????????à????

HDL?¤??

   ??????HDL???ò°ü???????à????·??¤??????±à???÷??·????÷?????????è???¤×÷??????°??ú??±à???÷??????????±????????????????ü???×???ü?ì?????è??????????±í????????·????????????±????×÷??????????????????±à????????±à???÷??????·¨??????????±???°??ú????±í?????????????????ù?????è??×é????????????????????????±à???÷?????????¨prism??±à???÷??????????????±?±à???í????????????????????±?±à???÷?à??????????????Verilog??VHDL???è?????±??·????????ò???ü?????????á?????????????????????????????????ú??±???????·¨?ì?é???ú????°??????????????ù????±à??????±à???÷???§???í·??§?????????í????????????????±¨????????

   ?ó??????×????í??°ü????±à???÷???????÷???????????÷HDL?ú???????ò??????Verilog???é±à???÷?¨VMC????VHDL?????é±à???÷?¨VHMC??????????SYROPSYS?????ò?????????ù???ù???è??×é?????ú???????á?????????ò·?????×????÷??

   ????×????ê??????????????·????÷??°??ú???????ú????×÷??????????Verilog·????÷??avanti?????á????Polaris??Cadence?è????????????NC Verilog??Verilog-XL??Synopsys??????VCS??Fintronic??????FINSIM??SynaptiCAD??????Verilogger Pro??Simucad??????Silos?????°Mentor Graphics??????QuikHDL??Model Technology??????Modelsim 5.6??·????÷???ü????????·???VHDL??CHDL/Verilog?ì?????è?????ò???í?????????÷·????÷????????·???·ì???á????????Mentor Graphics?????????à????HDL??????·????÷?×?????????¤??????HDL Pilot???????è?????????í?¤????HDL Detective ???è??·??????á???¤????????????Designer point ?¤????????????????Debug Detective?????????í??·????è??????????

   ???à?¤????????HDL???????÷????±?????????HDL±????í??????VHDL2 Verilog???????ù?????¤????????°??ú????????VHDL???è??×?????Verilog???è???¨???è?ú?????í????°??ú???????ù×????????????????ù???é?ó??±???FTL??????HDL×????÷???????ù??????VHDL??Verilog???è??????×??????à?????¤?????????í????±??ü????????·?°ü?¨???ú?????????????è??1?§?ò?????????????±??×????±×???????±?±????????????ò????Verilog????????????±à??????????C??C++????×??????í????

   ???????????°?????è????·???????????????HDL????????????°ì·¨??Accolade??????PeakFPGA ?è??×é????·???????????×é????°ü????????HDL±à???è?????±?ù?è?????÷???¤??????????????????????VHDL·????÷?????????????¨??±à???÷???????í?°???????í?±???????????????????????é?????????ú×????¨??×???·???±????????????????????×?????í?è?????ó???????????ó·??§?????¨???????é??????

   HDL Score??Innoveda???????????ú??×???·????¤??°ü??????????????×÷?·?????????ú???ì?é???????????è?????????í??????×?????????????????????????×??????¨???ò?????????????????????????????????í????????±??????????ò???÷?????????ò?????????????ò?????????ú????????????

   ???????????ó???????????è?????á?????¤?§?ú?ú???????±?????????ú???????é???????è??????????·????????????????è??????HDL??????????×??¤?????????¤????

±?????xHDL??????·????ú?·????±??????????????ù????????????