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J.Docdc gi,iIrjchluvilo.X01de c1UOllglinhiuIrenc16xut!1 dtekin(sl!Ihaydoigi:lIrjtin ).celcgiaIrielmkinx'.yra[](IYduneghl\'(10Wphqp Va' -LKJ\,;mIraI,)phqpV".nC'llV., I"llllgIiiquay\'ebLr6cJ:neuVakh6ng dlllg,Illl,rchil'nilw)'c5. 5.Thuc 1ll(Jhinhh6ail'lgied,)i\'6ic,iegiaIfjtrong1Ihaydoi.KielnIra X-+1C d bX .... 1 xutllhindaod(lnglrongmach.!\ell khongco dao d(lIlg,quay hu6c4. NIH!'V(ly,chungtaIhtlypllLKingph;ip mohinhho,.1.logichuangst!kinkh{LC \'6iphl10ngpilapm6hillhh(xitx\nghiell djch(1eho:lakhongcrlnt1wc vic phrmh'.lllgcaeph,[11Ill'.Them\'(10I:>c-caegiai trangqwitdnhthietkSlrdl;lIlgcaengonngum61,1phan cung. 6.2.Cae cau true ca S(1trongVHDL Moim1 thongnwchsoduqcthiefknhuIl1(Jthphancapcae m6dun.M6imodunluanglingvoimttlwethe'ellathie'tkc trcnngonngu YHDL.llwc the'thiet kcmQtdoituqng ellathietke phiincung. Doi lUqngnayc6caedauvaovadauradU'qcxacdjnhr6riing,dongthaithvc th6thie'tkc cOngplul.ichifaduqcchuenangeuadoitLfQTlgthOngquacae pheptoanduqcd!ohnghlatruDe.M6ithl!cthtthietkg6mc6haiphiio: phan khaiMo tlWetht vakien true tlwe the'. Phallkhaibaothl!cth61116tad. Ng6nngCi'VHDL duC)'em6tatheanhO:ngquytAeeuph=" chixaec1jnhvCticaekiculitke,songuyen. l1le'll1gl11tehicu cae lit k(: so nguyen. 51!sapxepG'tegia 1r!Irongmienxaedinheuakicuxaedinhk61tjUetcLla caephcpIminso:-.anh.Cie:-.6nguyenduqcStlPxcptheoIhCI\tfII!III Gies6 ,1mdeilcaeso dtlung.Ciem.:tngst: sosanllhilllgdch'>0s. neukhonge6h!aehQnothers thlmQigiatrie6thecodUQ"cella phiidUQ"ephubaitatc.idc khiinange6theC() eua < h{achol1>. Vi dl,lSlrdyng caulnhcase, signal S1:integer range 0to 7; signal II, 12,D: BIT ; process ( S 1,II, 12,13) begin case SIis when 0 I 2=> OU OU OU OU]loop { < /i'Il/1Wantlf >}I .- -' {next[< !l1J(11I> ] [","hen< diell_ ki{'JI>]; }I I exit [< 111/(/11>][when < die'lI_ ki{;/1>];} end loop[l1l1all]; :nhii.nellavongIi).pvathuangdUQ'edungdexaydl,l'r1g nhiing\'ong 16ngnhau.trong1.16mOLvangducycketIhue b6'itu khoa end loop; 181 www.Beenvn.com - download sach mien phi< sa.dr)'ItJp>:trongngonnguVHDLcom9tsovong vaicaesa do khaenhaunhl1:vang v6i sa d6 for,vong while,\'a vong khong ehuasa do VainhiJngvongh}pkh6ngchua < S(Idol,caelnhtrongdaytu[in1Ifscdu L Trang twanghqp co dc YanglOngnhauthlvicth!!c lnh next scduqcxacmQtcachtuong rninhhtmg < nhilll_\"(Jng_'{/jJ>. Neukhongc6nhLinvlmg trong c][ when < Ji["u_ ki(;/1>]; 9.Callwait Lnhwaitdieukhienbl)1116phongngilngvietlwchincaeqUi.itrlnh hO(lccaechuffilgI["lnhconeho16ikhidicu bentrangcau duCjc 184 www.Beenvn.com - download sach mien phidung.Tacothenoidlngdieu trongdiu waitchicothe duqcdungkhiXU[lt caesl! trendl1angtin Nhu Ulcdoi tl1qngthamgiatrongtrungdieukinphuiHIcaetinhicu.etc dieukiGI1de wc quatrinhbtdungco the duqcbicuthjduaiba d'-.mgsau day trung ngon ngQVHDL: wait [on < {(ill{/II111('/1>\'< {ellfillIIh'JI > \ J - - .- - . l until < hililltM(cfo,] - - < [for < bi/lI_flufc_tllrfi_MiulI >1; Gill lnh wait on: chicho chung 1adanhstich dc duangtinhiu mab(lmophongsccila sl! (sl!lhayd6ithaicaelill hiu).Vi dl.l,doivoicaulnh wait on A.B; quatrinhrnaph6ngsc dUngl; Nhungquatrinhd6kh6ngcanc6sl!xuathintuangminheuaInh wait. Victhvchinmqtqua trlnhproccss baa g6mvicthtfchinh.lldc c[iutruewan ttfeilIIaben trangthanqua trinh.Saukhic,lulnh tu,1nttfcu6i cling dugctht!c\'icmd ph6ng qua trlnh se dUQ'cbAtdauI\litll C[IUlnh twintl,fdautieneuaquatrlnh.Dieunaylamcha 1116ph6nghm.itd(mg cuaquatrlnhgiongnhllIll')tvongIij.pvohi..1llbaag()mtatdcacdu lnh tWIntVbcntrongquatrinh.Viethtfc m6phongquatrinhprocesse6 thebidungIi.libangCil.Ulnh waitva coth6dl1gckichho;;tlI;;tikhixu[ithin sl!kintrcncac duangtin trongdanhsuch tInhiuhicong.Chungta hayxetvi dl,lmb r,lnhhoab')mahoa Quatrlnhbi6uoienbmahoa naysec6danhsachtin tacdngg6mcaetinhiuy I,y2,y3,y4,y5, y6,y7,DicunayeGnglUangduangvoim[after < hi/If_tllll"c _tl/{}j_giall > 1 whcn < guifrIh(a_( 11011>: Phcpgantinhiuthen chQnluangductrlg"oiIn'>lquatrlnbprocess chCracrlUlenhcascoVi dy,phep gi.lntin hiutheoJl!achQnsaudayseluang dUO'llgHJim()lqUi.ltdnhprocess chuaJnhcase, withSelselect Z Z Z ::::::::: - - -procedure < Ihl_flnl_/lIe >< danh __wicft _fhum Jr'/ > I funtion< fCIlham >< danilsacllfilUms{y' > - - -return < kiAI_gici_fILtnl_f9i > : < dallh __widl_,lwm.wf>:::::::::lclass]< dmlh __W1ch_thl> lmode] < kiell>[::::::::< biel'_tll/it> J: trong d6, nham class: constant, Yariable, signal; d1; Vidysaudayeho fathaymattiella th,1nchuangtrlnhcon.Chuy rang.khi g9ihamfunction,phcpgqihamseb!ng.itkhithl!c dencflureturn.Cau returnxacdinhgiatfitral=255) then Temp :=0; else Temp := Count + 1 ; end ir; return ( Tcmp ); end Incrementer; Khig9ichuang Trinhcan,cacdoiluqngthl!cte wangu-ngvoithamso hlnhthuelopvariable pMilaeachien;wangu-ngvoilopconstantphaila hangso bieuthucvatu{mgungvoilOpsignalphaiIiltinOk hangsovabienduq'c theagiatr!,contin duq'c theadja chi.Do dodoi voilOpdoi tlIq'ngtin thlmQitaednglen thamso truyen vao thanchuang Trinhcan cling chinh Iiitacdng(fI!Ctieplentin dUQ'c truyenvao.Chung ta hay xet vid1,lchuang Trinhcon sau: 198 Vi procedure Send (signal CLK:BIT ; Data:integer; begin signal Ack:BIT;signalReady:out BIT; signal Wire:out integer) is wait until ( CLK'event and CLK = '1'and Ack = '1"); wire giai ma 2 - 4bang cau casco 3.Haymo tahanh vicuabQgdi rna2 - 4bang cauInhif. 4.DQALU8bilthl!chincac toan: phcp cQngkhid,luvao dieu gia If!"00"; phcp tn! khi (I,ludicukhi6n gi,itf!"01"; pbcp tminand khid,ludicukhitn gia If!"10"; phep tmtnor khidau dieu khi6n gi,'itr!"11". Hay viet chuang trlnh Irenngan ngu VHDL rna hihanh vicua bo t[nh toan so hQc-logic noitren. 5.Viet chm1ngIdnh In:nngon ngu VHDL mol,} ctiutruevaChlICnangella h6 (Ulima nco thanh hien thi7 - rn,lnh. 6.Hay viet chuang trtnh con Ihl!c phep cQnghaiso thea ma BCD. 7.Hay viet chuang trlnh conIratfnhchanIecua chuai16bit. 8.Viet chuang trlnh con tlwc d6iso nguyen trong khoiing tLr0 (ten255Ihanhvecta 8bitvangu'qcl1:\1011ellaphicnh,in\'LrallLrqelaor,1ula th:l1lltph:\Il.MtllC.'lll10nhqo phll'llh:tnIh:lIlhphilnIUllllph,'li(1uaekl-'1l1\'('ii lll(l!nh:ln_kh(1i_-,ao.eie nhJn 11:1)s':dU\K111;1111eltie'tl16iImng de (ill!hlnh euaIh:lllitph:ll1. CYuInk portmap ,ll1h:-"'.1cil' clingcLlatlr\ilo dlc linAnh,'< tentin_hleuthuc>. 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