rom.vhd

Xilinx Ise 官方源代码盘 第四章

--
@ER--RbBF$osHE50RO42RgRgg1b$MDHHO0R$,Q3MO
R--RDqDRosHER0#sCC#s8PC3-
-
R--#CCDOF0HMCR#0CR8VHHM0MHF3WRRCHRIDCDRP0CMkDND$8RN8DRLF_O	sRFl0
FF-N-RsDOEHR#0=CR#D0CO_lsF

---f-R]8CNCRs:/M#$/#OP/#sO/blNb#Cs/DGHH/MGD/HLo_CMcs	/FPl3EP8,R.43djR.jj4/.n/.R:.d46g:gCRLM0FHRb GR-f
-D

HNLssH$RC;CC
Ck#RCHCC03#8F_Do_HO4c4n3DND;#
kCCRHC#C30D8_FOoH_HNs0NE3D
D;kR#CHCCC38#0_oDFHkO_Mo#HM3C8N;DD
Ck#RsIF	C3oMObN	CNo3DND;D

HNLssG$ROjcjjk;
#GCROjcjjF3OlMbFC#M03DND;C

M00H$mR)vN_L#HCR#o
SCsMCH5OR
SSSI0H8ERR:HCM0oRCs:c=R;S
SS8N8s8IH0:ERR0HMCsoCRR:=(S;
SFSDI8N8sRR:HCM0oRCs:j=R;S
SSoEHE8N8sRR:HCM0oRCs:(=RUS;
SNS0LRDC:FRslL0ND
C;S8SSVRD0:FRslsIF82
S;b
SFRs05S
SS7q7)RR:H#MR0D8_FOoH_OPC0RFs58N8s8IH0-ERR84RF0IMF2Rj;S
SSz7maRR:FRk0#_08DHFoOC_POs0FRH5I8R0E-RR48MFI0jFR2S
S2S;
Ns00H0LkChRQQ:aRRs#0H;Mo
0SN0LsHkR0C\N3sMR	\:MRH0CCosR;
RNRR0H0sLCk0Rs\3CPlFCF_M_sINM:\RR0HMCsoC;M
C8MRC0$H0Rv)m_#LNC
;
NEsOHO0C0CksRD#CC_O0)RmvF)VRmLv_NR#CHS#
#0kL$RbCsFFlkH0R#0R#8F_Do_HOP0COFIs5HE80-84RF0IMF2Rj;-
-SlOFbCFMMv0RznXw
S--SsbF0
R5-S-SSRSmRF:Rk#0R0D8_FOoH;-
-SSSSQ:jRRRHM#_08DHFoO-;
-SSSSRQ4:MRHR8#0_oDFH
O;-S-SSRS1RH:RM0R#8F_Do
HO-S-SS
2;-C-SMO8RFFlbM0CM;
S
SMOF#M0N0CREGRR:#H0sMjo5RR0F4R62:"=Rjd4.c(6nUAgqBw7 "
;
SMVkOF0HMFRslL0NDCCsN085NCLDRs:RFNl0L;DCRRI,LD,RC:MRR0HMCsoC2CRs0MksRs#0HRMo=">Rs0FlNCLDs8CN"
;
SMVkOF0HMkRVMNOPDF5L0l0FDCHM_RV,DNFI8_8sVE,RHNoE8_8sVL,RHR0,M0LH#RR:HCM0o2CsR0sCkRsM#H0sMHoR#S
SO#FM00NMRb0FRH:RMo0CC:sR=FRL0l0FDCHM_+VRRHML0-#RR
4;SNSPsLHNDHCR,,R[RRP,L#bFRH:RMo0CC
s;SFSOMN#0M00RFEbON:sRR0HMCsoCRR:=M0LH#RR/cRR-4S;
SsPNHDNLCkRLVRR:#H0sM0o5FEbON8sRF0IMF2Rj;L
SCMoH
HSSVF5L0l0FDCHM_<VRRIDFNs88_FVRsFR0bRR>EEHoNs88_RV20MEC
SSS[=R:R
j;SPSSRR:=jS;
SbSLF:#R=;Rj
SSSVRFsHMRHR0LF0DFlH_MCVFR0Rb0FRFRDFSb
SHSSVRRH<FRDI8N8sR_VFHsRRE>RHNoE8_8sVER0CSM
SSSSH8VRV5D0L2H0R'=R40'RE
CMSSSSSRSP:P=RR.+R*;*[
SSSSMSC8VRH;S
SSDSC#SC
SSSSH0VRNCLD55H2L2H0R'=R40'RE
CMSSSSSRSP:P=RR.+R*;*[
SSSSMSC8VRH;S
SSMSC8VRH;S
SSRS[:[=RR4+R;RRRRR--MLklCFsRVHRL0O#RFCDDO80CRS
SSVSH5=[RRRc20MECRR--CsPC$RRcI8CRkRlbHFM0RONRENNsOs0C
SSSSRS[:j=R;S
SSLSSkLV5b2F#RR:=E5CGP
2;SSSSSFLb#=R:RFLb#RR+4S;
SSSSP=R:R
j;SSSSCRM8H
V;SCSSMD8RF;Fb
SSSskC0sLMRk
V;SDSC#SC
SCSs0MksRlsF0DNLCNsC8N50L,DCR0LF0DFlH_MCVL,RHR0,M0LH#
2;SMSC8VRH;C
SMV8Rk0MOHRFMVOkMP;ND
O
SF0M#NRM0L0F0FHlpM:CRR0HMCsoCRR:=5IDFNs88/24n*;4n
FSOMN#0ML0RFF00lpd.HRMC:MRH0CCos=R:RF5DI8N8s./d2.*d;O
SF0M#NRM0EEHopCHMRH:RMo0CC:sR=ER5HNoE8/8s4*n24
n;SMOF#M0N0HREo.EdpCHMRH:RMo0CC:sR=ER5HNoE8/8sd*.2d
.;SMOF#M0N0HREoFEAss8CRH:RMo0CC:sR=HREoHEpM+CRRR46;O
SF0M#NRM00#sH0CN0_:HRR0HMCsoCRR:=5oEHEsAF8+Cs4F-L0l0FpCHM2n/4RS;
0C$bRL0NRRH#NNss$5R5EEHodH.pM-CRR0LF0dFl.MpHCd2/.R+48MFI0jFR2VRFRlsFFRk0;#
SHNoMDmR1zRa,pamzR0:RN
L;So#HMRND7amz_GNk,mR7zNa_kRG.:0R#8F_Do_HOP0COFIs5HE80-84RF0IMF2Rj;C
Lo
HMRRRRRsVF_bbHCV:RFHsRRRHMjFR0R8IH04E-RMoCC0sNCS
SNs00H0LkC3R\s	NM\VRFRosC#RR:DCNLD#RHR
4;RRRRRRRRNs00H0LkC3R\sFClPMC_FN_IsRM\FsVRCRo#:NRDLRCDH4#R;R
SLHCoMS
SRosC#b:RHLbCkSV
SbSRFRs0l5Nb
RSRRSSSSQRRRR=>7amz_GNk5,H2
RSRRSSSSmRRRR=>7amz5
H2SSSSS;R2
CSRMo8RCsMCNR0CV_FsbCHb;S

H4V_nR#:H5VREEHodH.pM>CRR0LF0dFl.MpHCo2RCsMCN
0CSCSLo
HMSVSH_L4n:VRHRF5L0l0FpCHMRL=RFF00lpd.H2MCRMoCC0sNCS
SSRL:VRFsLRH0HjMRRR0FI0H8ERR-4CRoMNCs0SC
SNSS0H0sLCk0RQQhaVRFRv)m :6RRLDNCHDR#kRVMNOPDF5L0l0FpCHM,FRDI8N8sE,RHNoE8,8sR0LH,.Rd2S;
SCSLo
HMSSSS) mv6RR:)dmv.
X4SSSSSFSbsl0RN5bRRjRqRR=>q)775,j2
SSSSSSSS4SqRR=>q)775,42
SSSSSSSS.SqRR=>q)775,.2
SSSSSSSSdSqRR=>q)775,d2
SSSSSSSScSqRR=>q)775,c2
SSSSSSSSRSmRR=>1amz55j2L2H0
SSSSSSSS;S2
SSSCRM8oCCMsCN0R
L;SMSC8CRoMNCs0HCRVn_4LS;
S_HV4:nLRRHV50LF0pFlHRMC>FRL0l0FdH.pMRC2oCCMsCN0
SSSLV:RFLsRHH0RMRRj0IFRHE80R4-RRMoCC0sNCS
SS0SN0LsHkR0CQahQRRFV) mvcRR:DCNLD#RHRMVkODPN50LF0pFlH,MCRIDFNs88,HREo8EN8Rs,L,H0R24n;S
SSoLCHSM
S)SSmcv R):Rmnv4XS4
SSSSSsbF0NRlbRR5RRqj=q>R757)j
2,SSSSSSSSSRq4=q>R757)4
2,SSSSSSSSSRq.=q>R757).
2,SSSSSSSSSRqd=q>R757)d
2,SSSSSSSSSRmR=1>Rm5zajL25H
02SSSSSSSSS
2;SCSSMo8RCsMCNR0CLS;
S8CMRMoCC0sNCVRH_L4n;C
SMo8RCsMCNR0CH4V_n
#;
VSH_#d.:VRHRH5Eo.EdpCHMRL=RFF00lpd.H2MCRMoCC0sNCS
SH4V_nRO:H5VRL0F0FHlpM=CRR0LF0dFl.MpHCo2RCsMCN
0CSLSS:FRVsHRL0MRHR0jRFHRI8R0E-RR4oCCMsCN0
SSSS_HV4H:RVNR58I8sHE80R4=R2CRoMNCs0SC
SSSSNs00H0LkChRQQFaRVmR)vR 4:NRDLRCDHV#RkPMONLD5FF00lMpHCD,RF8IN8Rs,EEHoNs88,HRL04,Rn
2;SSSSLHCoMS
SS)SSm4v R):Rmnv4XS4
SSSSSFSbsl0RN5bRRjRqRR=>q)775,j2
SSSSSSSSqSS4>R=R''j,S
SSSSSSSSSq=.R>jR''S,
SSSSSSSSSRqd='>Rj
',SSSSSSSSSRSmRR=>1amz55j2L2H0
SSSSSSSS;S2
SSSS8CMRMoCC0sNCVRH_
4;SSSSH.V_:VRHR85N8HsI8R0E=2R.RMoCC0sNCS
SSNSS0H0sLCk0RQQhaVRFRv)m :.RRLDNCHDR#kRVMNOPDF5L0l0FpCHM,FRDI8N8sE,RHNoE8,8sR0LH,nR42S;
SLSSCMoH
SSSSmS)vR .:mR)vX4n4S
SSSSSSsbF0NRlbRR5RRqj=q>R757)j
2,SSSSSSSSS4SqRR=>q)775,42
SSSSSSSSqSS.>R=R''j,S
SSSSSSSSSq=dR>jR''S,
SSSSSSSSSRmR=1>Rm5zajL25H
02SSSSSSSSS
2;SSSSCRM8oCCMsCN0R_HV.S;
SHSSV:_dRRHV58N8s8IH0=ERRRd2oCCMsCN0
SSSS0SN0LsHkR0CQahQRRFV) mvdRR:DCNLD#RHRMVkODPN50LF0pFlH,MCRIDFNs88,HREo8EN8Rs,L,H0R24n;S
SSCSLo
HMSSSSSv)m :dRRv)m44nX
SSSSSSSb0FsRblNRR5Rq=jR>7Rq7j)52S,
SSSSSSSSSRq4=q>R757)4
2,SSSSSSSSS.SqRR=>q)775,.2
SSSSSSSSqSSd>R=R''j,S
SSSSSSSSSm=RR>mR1zja52H5L0S2
SSSSS;S2
SSSS8CMRMoCC0sNCVRH_
d;SSSSHcV_:VRHRE55HNoE8-8sL0F0FHlpM<CRR24nR8NMR85N8HsI8R0E>c=R2o2RCsMCN
0CSSSSS0N0skHL0QCRhRQaF)VRmcv RD:RNDLCRRH#VOkMP5NDL0F0FHlpMRC,DNFI8,8sRoEHE8N8sL,RHR0,4;n2
SSSSoLCHSM
SSSS) mvcRR:)4mvn
X4SSSSSbSSFRs0lRNb5qRRj>R=R7q7)25j,S
SSSSSSSSSq=4R>7Rq74)52S,
SSSSSSSSSRq.=q>R757).
2,SSSSSSSSSdSqRR=>q)775,d2
SSSSSSSSmSSR>R=Rz1ma25j50LH2S
SSSSSS2SS;S
SSMSC8CRoMNCs0HCRV;_c
SSSS_HV6H:RV5R5Ns88I0H8E=R>RR62NRM85oEHE8N8sRR-L0F0FHlpM>CR=nR42o2RCsMCN
0CSSSSS0N0skHL0QCRhRQaF)VRm6v RD:RNDLCRRH#VOkMP5NDL0F0FHlpMRC,DNFI8,8sRoEHE8N8sL,RHR0,d;.2
SSSSoLCHSM
SSSS) mv6RR:)dmv.
X4SSSSSbSSFRs0lRNb5qRRj>R=R7q7)25j,S
SSSSSSSSSq=4R>7Rq74)52S,
SSSSSSSSSRq.=q>R757).
2,SSSSSSSSSdSqRR=>q)775,d2
SSSSSSSSqSSc>R=R7q7)25c,S
SSSSSSSSSm=RR>mR1zja52H5L0S2
SSSSSSSS2S;
SCSSMo8RCsMCNR0CH6V_;S
SS8CMRMoCC0sNC;RL
CSSMo8RCsMCNR0CH4V_n
O;SVSH_84n:VRHRF5L0l0FpCHMRL>RFF00lpd.H2MCRMoCC0sNCS
SS_HVNI8sHE80:VRHR85N8HsI8R0E>2RcRMoCC0sNCS
SS:SLRsVFR0LHRRHMjFR0R8IH0-ERRo4RCsMCN
0CSSSSS_HVcH:RV5R5EEHoNs88-0LF0DFlHRMC<nR42MRN8NR58I8sHE80RR>=cR22oCCMsCN0
SSSSNSS0H0sLCk0RQQhaVRFRv)m :cRRLDNCHDR#kRVMNOPDF5L0l0FpCHM,FRDI8N8sE,RHNoE8,8sR0LH,nR42S;
SSSSLHCoMS
SSSSS) mvcRR:)4mvn
X4SSSSSSSSb0FsRblNRq5Rj>R=R7q7)25j,S
SSSSSSSSSSRq4=q>R757)4
2,SSSSSSSSSqSS.>R=R7q7)25.,S
SSSSSSSSSSRqd=q>R757)d
2,SSSSSSSSSmSSRR=>1amz55j2L2H0
SSSSSSSSSSS2S;
SSSSCRM8oCCMsCN0R_HVcS;
SCSSMo8RCsMCNR0CLS;
SMSC8CRoMNCs0HCRV8_Ns8IH0
E;SHSSV8_N8HsI8:0ERRHV58N8s8IH0<ER=2RcRMoCC0sNCS
SS:SLRsVFR0LHRRHMjFR0R8IH0-ERRo4RCsMCN
0CSSSSS_HV4H:RVNR58I8sHE80R4=R2CRoMNCs0SC
SSSSS0N0skHL0QCRhRQaF)VRm4v RD:RNDLCRRH#VOkMP5NDL0F0FHlpMRC,DNFI8,8sRoEHE8N8sL,RHR0,4;n2
SSSSCSLo
HMSSSSSmS)vR 4:mR)vX4n4S
SSSSSSFSbsl0RN5bRRjRqRR=>q)775,j2
SSSSSSSSSSSq=4R>jR''S,
SSSSSSSSS.SqRR=>',j'
SSSSSSSSSSSq=dR>jR''S,
SSSSSSSSSRSmRR=>1amz55j2L2H0
SSSSSSSS2SS;S
SSCSSMo8RCsMCNR0CH4V_;S
SSHSSV:_.RRHV58N8s8IH0=ERRR.2oCCMsCN0
SSSSNSS0H0sLCk0RQQhaVRFRv)m :.RRLDNCHDR#kRVMNOPDF5L0l0FpCHM,FRDI8N8sE,RHNoE8,8sR0LH,nR42S;
SSSSLHCoMS
SSSSS) mv.RR:)4mvn
X4SSSSSSSSb0FsRblNRR5Rq=jR>7Rq7j)52S,
SSSSSSSSS4SqRR=>q)775,42
SSSSSSSSSSSq=.R>jR''S,
SSSSSSSSSdSqRR=>',j'
SSSSSSSSSSSm=RR>mR1zja52H5L0S2
SSSSSSSSS
2;SSSSS8CMRMoCC0sNCVRH_
.;SSSSS_HVdH:RVNR58I8sHE80Rd=R2CRoMNCs0SC
SSSSS0N0skHL0QCRhRQaF)VRmdv RD:RNDLCRRH#VOkMP5NDL0F0FHlpMRC,DNFI8,8sRoEHE8N8sL,RHR0,4;n2
SSSSCSLo
HMSSSSSmS)vR d:mR)vX4n4S
SSSSSSFSbsl0RN5bRRjRqRR=>q)775,j2
SSSSSSSSSSSq=4R>7Rq74)52S,
SSSSSSSSS.SqRR=>q)775,.2
SSSSSSSSSSSq=dR>jR''S,
SSSSSSSSSRSmRR=>1amz55j2L2H0
SSSSSSSS
2;SSSSS8CMRMoCC0sNCVRH_
d;SSSSS_HVcH:RV5R5EEHoNs88-0LF0DFlHRMC<nR42MRN8NR58I8sHE80RR>=cR22oCCMsCN0
SSSSNSS0H0sLCk0RQQhaVRFRv)m :cRRLDNCHDR#kRVMNOPDF5L0l0FpCHM,FRDI8N8sE,RHNoE8,8sR0LH,nR42S;
SSSSLHCoMS
SSSSS) mvcRR:)4mvn
X4SSSSSSSSb0FsRblNRR5Rq=jR>7Rq7j)52S,
SSSSSSSSS4SqRR=>q)775,42
SSSSSSSSSSSq=.R>7Rq7.)52S,
SSSSSSSSSdSqRR=>q)775,d2
SSSSSSSSSSSm=RR>mR1zja52H5L0S2
SSSSS2SS;S
SSCSSMo8RCsMCNR0CHcV_;S
SSMSC8CRoMNCs0LCR;S
SS8CMRMoCC0sNCVRH_8N8s8IH0
E;SMSC8CRoMNCs0HCRVn_48S;
CRM8oCCMsCN0R_HVd;.#
L
S4V:RFIsRRRHM4FR0RH5Eo.EdpCHMRL-RFF00lpd.H-MCd/.2do.RCsMCN
0CS:SLRsVFR0LHRRHMjFR0R8IH0-ERRo4RCsMCN
0CSNSS0H0sLCk0RQQhaVRFRv)m :6RRLDNCHDR#kRVMNOPD*5IdL.+FF00lpd.H,MCRIDFNs88,HREo8EN8Rs,L,H0R2d.;S
SSo#HMRNDbCHb_k8F0:#RR8#0_oDFH
O;SCSLo
HMS)SSm6v R):Rm.vdXS4
SSSSb0FsRblNRR5Rq=jR>7Rq7j)52S,
SSSSSqSS4>R=R7q7)254,S
SSSSSS.SqRR=>q)775,.2
SSSSSSSSRqd=q>R757)d
2,SSSSSSSSq=cR>7Rq7c)52S,
SSSSSmSSR>R=Rz1ma25I50LH2S
SSSSSS
2;SMSC8CRoMNCs0LCR;C
SMo8RCsMCNR0CL
4;
VSH_F4n:VRHRE55HdoE.MpHCRR=RoEHEMpHCN2RM58REEHodH.pM>CRR0LF0dFl.MpHCR22oCCMsCN0
LSS:FRVsHRL0MRHR0jRFHRI8R0E-RR4oCCMsCN0
SSS#MHoNFDRkC0_M:8RR8#0_oDFH
O;SNSS0H0sLCk0RQQhaVRFRv)m :cRRLDNCHDR#kRVMNOPDH5EoFEAss8C-,46RoEHEsAF8-Cs4R6,EEHoNs88,HRL04,Rn
2;SCSLo
HMS)SSmcv R):Rmnv4XS4
SSSSb0FsRblNRq5Rj=RR>7Rq7j)52S,
SSSSSqSS4>R=R7q7)254,S
SSSSSS.SqRR=>q)775,.2
SSSSSSSSRqd=q>R757)d
2,SSSSSSSSm=RR>mR1z5a5EEHodH.pMLC-FF00lpd.H-MCd/.2d4.+2H5L0S2
SSSSS;S2
CSSMo8RCsMCNR0CLS;
CRM8oCCMsCN0R_HV4;nF
VSH_#4n:VRHRE55HdoE.MpHCRR<RoEHEMpHCN2RM58REEHodH.pM>CRR0LF0dFl.MpHCR22oCCMsCN0
LSS:FRVsHRL0MRHR0jRFHRI8R0E-RR4oCCMsCN0
SSS#MHoNFDRkC0_M:8RR8#0_oDFH
O;SNSS0H0sLCk0RQQhaVRFRv)m :6RRLDNCHDR#kRVMNOPDH5EoFEAss8C-,d4RoEHEsAF8-CsdR4,EEHoNs88,HRL0d,R.
2;SCSLo
HMS)SSm6v R):Rm.vdXS4
SSSSb0FsRblNRR5Rq=jR>7Rq7j)52S,
SSSSSqSS4>R=R7q7)254,S
SSSSSS.SqRR=>q)775,.2
SSSSSSSSRqd=q>R757)d
2,SSSSSSSSq=cR>7Rq7c)52S,
SSSSSmSSR>R=Rz1maE55HdoE.MpHCF-L0l0FdH.pM/C2d5.2L2H0
SSSSSSS2S;
S8CMRMoCC0sNC;RL
MSC8CRoMNCs0HCRVn_4#
;
RRRRHIV_HE80:VRHRs50HN#00HC_R6<R2CRoMNCs0RC
RRRRRHRRVk_F0Rj:H5VREEHodH.pM=CRR0LF0dFl.MpHCo2RCsMCN
0CRRRRRRRRRpRRm5zaj<2R=mR1zja52R;
RRRRRCRRMo8RCsMCNR0CHFV_k;0j
RRRRRRRR_HVF4k0:VRHRH5Eo.EdpCHMRL>RFF00lpd.H2MCRMoCC0sNCR
RRRRRRRRRR_HVOCN#4H:RVLR5FF00lMpHCRR=L0F0F.ldpCHM2CRoMNCs0-C
-#SSHNoMDHR8V:VRR8#0_oDFH
O;SRRRLHCoM-
-RRRRRRRRRRRRRHR8V<VR=jR''ERICqMR7R7)<B=Rm_he1_a7pQmtB _eB)am5+d4L0F0FHlpMRC,Ns88I0H8E
2R-R-RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRCRRDR#C';4'
S--RRRRRFRVsH_I8:0ERsVFRHHRMRRj0IFRHE80-o4RCsMCN
0C-R-SRRRRRRRRl0kGsRCC:zRvX
wn-S-SSsbF0NRlb
R5-S-SSRSRm=RR>mRpzja5225H,-
-SSSSRjRQRR=>1amz55j2H
2,-S-SSRSRQ=4R>mR1z4a5225H,-
-SSSSRRR1RR=>8VHV
S--S;S2
R--RRRRRRRRRRRRR8CMRMoCC0sNCFRVsH_I8;0E