ram_rw.vhd

Xilinx Ise 官方源代码盘 第四章

--
@ER--RbBF$osHE50RO42RgRgU1b$MDHHO0R$,Q3MO
R--RDqDRosHER0#sCC#s8PC3-
-

---1-RHDlbCqR)vHRI0#ERHDMoC7Rq71) 1FRVsFRL0sERCRN8NRM8I0sHC-
-RsaNoRC0:HRXDGHM

--DsHLNRs$HCCC;#
kCCRHC#C30D8_FOoH_n44cD3NDk;
#HCRC3CC#_08DHFoOH_#o8MC3DND;H
DLssN$HRPsG0C.k;
#PCRHCs0GO.3FFlbM0CM#D3NDC;
M00H$qR)vW_)R
H#RRRRoCCMsRHO5R
RRRRRRNRVl$HDR#:R0MsHo=R:RF"MM;C"
RRRRRRRR8IH0:ERR0HMCsoCRR:=4
;RRRRRRRRRNs88I0H8ERR:HCM0oRCs:n=R;RRRRRRRRR--LRHoCkMFoVERF8sRCEb0
RRRRRRRRb8C0:ERR0HMCsoCRR:=c
j;RRRRRRRR80Fk_osCRL:RFCFDN:MR=NRVD;#CRRRRRR--ERN#Fbk0ks0RCRo
RRRRR8RRHsM_C:oRRFLFDMCNRR:=V#NDCR;RRRRR-E-RN8#RNR0NHkMb0CRsoR
RRRRRR8RN8ss_C:oRRFLFDMCNRR:=V#NDCRRRR-RR-NRE88RN8#sC#CRsoR
RRRRRR;R2
RRRRsbF0
R5RRRRRRRR7amz:kRF00R#8F_Do_HOP0COFIs5HE80-84RF0IMF2Rj;R
RRRRRRQR7h:RRRRHM#_08DHFoOC_POs0F58IH04E-RI8FMR0Fj
2;RRRRRRRRq)77RH:RM0R#8F_Do_HOP0COFNs58I8sHE80-84RF0IMF2Rj;R
RRRRRR RWRRR:H#MR0D8_FOoH;RRRRRRR-I-RsCH0RNCMLRDCVRFss
NlRRRRRRRRBRpi:MRHR8#0_oDFHRO;RRRRR-R-RFODOV	RFssRNRl,Ns88,HR8MR
RRRRRRBRmp:iRRRHM#_08DHFoORRRRRRR-F-RbO0RD	FORsVFRk8F0R
RRRRRR;R2
8CMR0CMHR0$)_qv)
W;

---w-RH0s#RbHlDCClM00NHRFMl0k#RRLCODNDCN8RsjOE

--NEsOHO0C0CksRFLDOs	_NFlRVqR)vW_)R
H#VOkM0MHFRMVkOM_HHL05RL:RFCFDNRM2skC0s#MR0MsHo#RH
oLCHRM
RRHV5RL20MEC
RRRR0sCk5sM";"2
CRRD
#CRRRRskC0s"M5BDFk8FRM0lRHblDCCRM0AODF	qR)vQ3R#ER0CCRsNN8R8C8s#s#RC#oH0CCs8#RkHRMo0REC#CNlRFODON	R#ER0CqR)v2?";R
RCRM8H
V;CRM8VOkM_HHM0V;
k0MOHRFMo_C0C_M880CbEH5#x:CRR0HMCsoCR8;RCEb0RH:RMo0CCRs2skC0sHMRMo0CCHsR#N
PsLHNDlCRH#M_HRxC:MRH0CCos=R:R
j;LHCoMR
Rl_HM#CHxRR:=80CbER;
RRHV5x#HCRR<80CbE02RE
CMRRRRl_HM#CHxRR:=#CHx;R
RCRM8H
V;RCRs0MksRMlH_x#HCC;
Mo8RCC0_M88_CEb0;0
N0LsHkR0CoCCMsFN0sC_sb0FsR#:R0MsHoN;
0H0sLCk0RMoCC0sNFss_CsbF0VRFRFLDOs	_N:lRRONsECH0Os0kC#RHRMVkOM_HHN058_8ss2Co;-
-RoLCHLMRD	FORlsNRbHlDCClM00NHRFM#MHoN
D#0C$bR0HM_sNsNH$R#sRNsRN$50jRF2R6RRFVHCM0o;Cs
MOF#M0N0HRI8_0ENNss$RR:H_M0NNss$=R:R,54RR.,cU,R,nR4,.Rd2O;
F0M#NRM080CbEs_NsRN$:MRH0s_NsRN$:5=R4UndcU,R4,g.Rgcjn.,Rj,cUR.4jc6,R4;.2
MOF#M0N0HR8PRd.:MRH0CCos=R:RH5I8-0E4d2/.O;
F0M#NRM084HPnRR:HCM0oRCs:5=RI0H8E2-4/;4n
MOF#M0N0HR8P:URR0HMCsoCRR:=58IH04E-2;/U
MOF#M0N0HR8P:cRR0HMCsoCRR:=58IH04E-2;/c
MOF#M0N0HR8P:.RR0HMCsoCRR:=58IH04E-2;/.
MOF#M0N0HR8P:4RR0HMCsoCRR:=58IH04E-2;/4
F
OMN#0ML0RF4FDRL:RFCFDN:MR=8R5HRP4>2Rj;F
OMN#0ML0RF.FDRL:RFCFDN:MR=8R5HRP.>2Rj;F
OMN#0ML0RFcFDRL:RFCFDN:MR=8R5HRPc>2Rj;F
OMN#0ML0RFUFDRL:RFCFDN:MR=8R5HRPU>2Rj;F
OMN#0ML0RF4FDnRR:LDFFCRNM:5=R84HPnRR>j
2;O#FM00NMRFLFDRd.:FRLFNDCM=R:RH58PRd.>2Rj;O

F0M#NRM084HPncdURH:RMo0CC:sR=8R5CEb0-/424UndcO;
F0M#NRM08UHP4Rg.:MRH0CCos=R:RC58b-0E4U2/4;g.
MOF#M0N0HR8PgcjnRR:HCM0oRCs:5=R80CbE2-4/gcjnO;
F0M#NRM08.HPjRcU:MRH0CCos=R:RC58b-0E4.2/j;cU
MOF#M0N0HR8P.4jcRR:HCM0oRCs:5=R80CbE2-4/.4jcO;
F0M#NRM086HP4:.RR0HMCsoCRR:=5b8C04E-24/6.
;
O#FM00NMRFLFD.64RL:RFCFDN:MR=8R5H4P6.RR>j
2;O#FM00NMRFLFD.4jcRR:LDFFCRNM:5=R84HPjR.c>2Rj;F
OMN#0ML0RF.FDjRcU:FRLFNDCM=R:RH58Pc.jURR>j
2;O#FM00NMRFLFDgcjnRR:LDFFCRNM:5=R8cHPjRgn>2Rj;F
OMN#0ML0RFUFD4Rg.:FRLFNDCM=R:RH58PgU4.RR>j
2;O#FM00NMRFLFDd4nU:cRRFLFDMCNRR:=5P8H4UndcRR>j
2;
MOF#M0N0kR#lH_I8R0E:MRH0CCos=R:RmAmph q'#bF5FLFDR42+mRAmqp hF'b#F5LF2D.RA+Rm mpqbh'FL#5FcFD2RR+Apmm 'qhb5F#LDFFU+2RRmAmph q'#bF5FLFD24n;F
OMN#0M#0Rk8l_CEb0RH:RMo0CC:sR=RR6-AR5m mpqbh'FL#5F6FD4R.2+mRAmqp hF'b#F5LFjD4.Rc2+mRAmqp hF'b#F5LFjD.cRU2+mRAmqp hF'b#F5LFjDcgRn2+mRAmqp hF'b#F5LF4DUg2.2;O

F0M#NRM0IE_OFCHO_8IH0:ERR0HMCsoCRR:=I0H8Es_Ns5N$#_klI0H8E
2;O#FM00NMROI_EOFHCC_8bR0E:MRH0CCos=R:Rb8C0NE_s$sN5l#k_8IH0;E2
MOF#M0N0_R8OHEFOIC_HE80RH:RMo0CC:sR=HRI8_0ENNss$k5#lC_8b20E;F
OMN#0M80R_FOEH_OC80CbERR:HCM0oRCs:8=RCEb0_sNsN#$5k8l_CEb02
;
O#FM00NMRII_HE80_lMk_DOCD:#RR0HMCsoCRR:=58IH04E-2_/IOHEFOIC_HE80R4+R;F
OMN#0MI0R_b8C0ME_kOl_C#DDRH:RMo0CC:sR=8R5CEb0-/42IE_OFCHO_b8C0+ERR
4;
MOF#M0N0_R8I0H8Ek_MlC_ODRD#:MRH0CCos=R:RH5I8-0E482/_FOEH_OCI0H8ERR+4O;
F0M#NRM08C_8b_0EM_klODCD#RR:HCM0oRCs:5=R80CbE2-4/O8_EOFHCC_8bR0E+;R4
F
OMN#0MI0R_x#HCRR:HCM0oRCs:I=R_8IH0ME_kOl_C#DDRI*R_b8C0ME_kOl_C#DD;F
OMN#0M80R_x#HCRR:HCM0oRCs:8=R_8IH0ME_kOl_C#DDR8*R_b8C0ME_kOl_C#DD;O

F0M#NRM0LDFF_:8RRFLFDMCNRR:=5#8_HRxC-_RI#CHxRR<=j
2;O#FM00NMRFLFDR_I:FRLFNDCM=R:R0MF5FLFD2_8;O

F0M#NRM0OHEFOIC_HE80RH:RMo0CC:sR=AR5m mpqbh'FL#5F_FD8*2RRO8_EOFHCH_I820ER5+RApmm 'qhb5F#LDFF_RI2*_RIOHEFOIC_HE802O;
F0M#NRM0OHEFO8C_CEb0RH:RMo0CC:sR=AR5m mpqbh'FL#5F_FD8*2RRO8_EOFHCC_8b20ER5+RApmm 'qhb5F#LDFF_RI2*_RIOHEFO8C_CEb02O;
F0M#NRM0I0H8Ek_MlC_ODRD#:MRH0CCos=R:Rm5Amqp hF'b#F5LF8D_25R*I0H8E2-4/O8_EOFHCH_I820ER5+RApmm 'qhb5F#LDFF_RI2*IR5HE80-/42IE_OFCHO_8IH0RE2+;R4
MOF#M0N0CR8b_0EM_klODCD#RR:HCM0oRCs:5=RApmm 'qhb5F#LDFF_R82*C58b-0E482/_FOEH_OC80CbE+2RRm5Amqp hF'b#F5LFID_2RR*5b8C04E-2_/IOHEFO8C_CEb02RR+4-;
-MOF#M0N0kRMlC_ODRD#:MRH0CCos=R:R55580CbERR-4/2RR2d.R5+R5C58bR0E-2R4R8lFR2d.R4/Rn;22R-RR-RRyF)VRq.vdXR41ODCD#CRMC88CR-
-O#FM00NMRVDC0P_FC:sRR0HMCsoCRR:=5855CEb0R4+R6l2RFd8R./2RR24n;RRRRRRRRRRRRRRRRRRRRRRRR-R-RFyRVqR)vX4n4M1RCCC88FRVsCRDVF0RPRCsI8Fs#$
0bFCRkL0_k_#40C$bRRH#NNss$8R5CEb0_lMk_DOCD4#-RI8FMR0FjI,RHE80_lMk_DOCD4#-RI8FMR0FjF2RV0R#8F_Do;HO
o#HMRNDF_k0L4k#RF:RkL0_k_#40C$b;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR--.N7Rs$sNRRFVsF_8k50RHkMb0FR0RH0s-N#002C#
b0$CkRF0k_L#0._$RbCHN#Rs$sNRC58b_0EM_klODCD#R-48MFI0jFR,*R.I0H8Ek_MlC_OD+D#4FR8IFM0RRj2F#VR0D8_FOoH;H
#oDMNR0Fk_#Lk.RR:F_k0L.k#_b0$CR;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-R-RR.7NNss$VRFR8s_FRk05bHMk00RFsR0H0-#N#0C2$
0bFCRkL0_k_#c0C$bRRH#NNss$8R5CEb0_lMk_DOCD4#-RI8FMR0Fjc,R*8IH0ME_kOl_C#DD+8dRF0IMF2RjRRFV#_08DHFoO#;
HNoMDkRF0k_L#:cRR0Fk_#Lkc$_0bRC;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-RR-7R.RsNsNF$RV_Rs80FkRM5HbRk000FRs#H-0CN0#02
$RbCF_k0LUk#_b0$C#RHRsNsN5$R80CbEk_MlC_OD-D#4FR8IFM0RRj,UH*I8_0EM_klODCD#R+(8MFI0jFR2VRFR8#0_oDFH
O;#MHoNFDRkL0_kR#U:kRF0k_L#0U_$;bCRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-.-R7sRNsRN$FsVR_k8F0HR5M0bkRR0F0-sH#00NC
#20C$bR0Fk_#Lk40n_$RbCHN#Rs$sNRC58b_0EM_klODCD#R-48MFI0jFR,nR4*8IH0ME_kOl_C#DD+R468MFI0jFR2VRFR8#0_oDFH
O;#MHoNFDRkL0_kn#4RF:RkL0_kn#4_b0$CR;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-R-RR.7NNss$VRFR8s_FRk05bHMk00RFsR0H0-#N#0C2$
0bFCRkL0_k.#d_b0$C#RHRsNsN5$R80CbEk_MlC_OD-D#4FR8IFM0RRj,dI.*HE80_lMk_DOCDd#+4FR8IFM0RRj2F#VR0D8_FOoH;H
#oDMNR0Fk_#Lkd:.RR0Fk_#Lkd0._$;bCRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-.-R7sRNsRN$FsVR_k8F0HR5M0bkRR0F0-sH#00NC
#2#MHoNFDRkC0_MRR:#_08DHFoOC_POs0F5b8C0ME_kOl_C#DD-84RF0IMF2Rj;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-R-RNCML#DCRsVFRH0s-N#00
C##MHoNIDRsC0_MRR:#_08DHFoOC_POs0F5b8C0ME_kOl_C#DD-84RF0IMF2Rj;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-R-RHIs0CCRMDNLCV#RFCsRNROEsRFIF)VRqOvRC#DD
o#HMRNDHsM_C:oRR8#0_oDFHPO_CFO0sH5I8+0Ed84RF0IMF2Rj;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-k-R#RC80sFRC#oH0RCs7RQh
o#HMRNDF_k0sRCo:0R#8F_Do_HOP0COFIs5HE80+Rd48MFI0jFR2R;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-k-R#RC80sFRC#oH0RCs7amz
o#HMRNDF_k0s4CoR#:R0D8_FOoH_OPC05FsI0H8ER-48MFI0jFR2R;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-RR-#RkC08RFEROFCF#R0LCIMCCRh7QR8NMR0FkbRk0FAVRD	FORv)q
o#HMRNDNs8_C:oRR8#0_oDFHPO_CFO0s85N8HsI8-0E4FR8IFM0R;j2RRRRRRRRRRRRRRRRRRRRRRRRRRRRR-RR-#RkC08RFCRso0H#CqsR7R7)VRFsI0sHCH
#oDMNRIDF_8sN8:sRR8#0_oDFHPO_CFO0sd54RI8FMR0FjR2;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-R-R8sN8LsRHR0#HkMb0FR0Rv)qRDOCD5#RcHRL0s#RCHJks2C8
o#HMRNDD_FII8N8sRR:#_08DHFoOC_POs0F5R4d8MFI0jFR2R;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR--I8N8sHRL0H#RM0bkRR0F)RqvODCD#cR5R0LH#CRsJskHC
82#MHoN)DRq)77_b0lR#:R0D8_FOoH_OPC05FsNs88I0H8ER-48MFI0jFR2R;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR--k8#CRR0FbCHbDCHMR7)q7#)
HNoMDqRW7_7)0Rlb:0R#8F_Do_HOP0COFNs58I8sHE80-84RF0IMF2Rj;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-k-R#RC80bFRHDbCHRMCW7q7)H
#oDMNRh7Q_b0lR#:R0D8_FOoH_OPC05FsI0H8ER-48MFI0jFR2R;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR-RR-#RkC08RFHRbbHCDM7CRQ#h
HNoMD RW_b0lR#:R0D8_FOoH;RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR--k8#CRR0FbCHbDCHMR
W -C-RML8RD	FORlsNRbHlDCClM00NHRFM#MHoN
D#
R--LHCoMCR#D0CORlsNRbHlDCClM00NHRFM#MHoN
D#0C$bRVDC0CFPsR_0HN#Rs$sNRR5j0dFR2VRFR0HMCsoC;$
0bDCRCFV0P_Cs0R_.HN#Rs$sNRR5j04FR2VRFR0HMCsoC;k
VMHO0FbMRNH85R#:R0D8_FOoH_OPC0;FsR,I4RRI.:MRH0CCoss2RCs0kM0R#8F_Do_HOP0COFHsR#N
PsLHNDPCRN:sRR8#0_oDFHPO_CFO0s45I-84RF0IMF2Rj;C
Lo
HMRFRVsRR[HPMRNss'NCMoRFDFbR
RRVRHRR5[<I=R.02RERCM
RSRP5Ns[:2R=5RHHF'DI2+[;C
SD
#CSPRRN[s52=R:R''j;C
SMH8RVR;
R8CMRFDFbR;
R0sCkRsMP;Ns
8CMR8bN;k
VMHO0FoMRCI0_HE80_IU5HE80:MRH0CCoss2RCs0kMMRH0CCos#RH
sPNHDNLCNRPDRR:HCM0oRCs:j=R;C
Lo
HMRNRPD=R:R8IH0UE/;R
RH5VR58IH0lERFU8R2RR>c02RE
CMRRRRPRND:P=RN+DRR
4;RMRC8VRH;R
RskC0sPMRN
D;CRM8o_C0I0H8E;_U
MVkOF0HMCRo0H_I8_0E.H5I8:0ER0HMCsoC2CRs0MksR0HMCsoCR
H#PHNsNCLDRDPNRH:RMo0CC:sR=;Rj
oLCHRM
RDPNRR:=I0H8E;/.
sRRCs0kMNRPDC;
Mo8RCI0_HE80_
.;VOkM0MHFR0oC_8IH0IE5HE80RH:RMo0CCRs2skC0sDMRCFV0P_Cs0R_.HP#
NNsHLRDCPRND:CRDVP0FC0s__
.;LHCoMR
RP5ND4:2R=CRo0H_I8_0E.H5I820E;R
RH5VRI0H8EFRl8RR.=2RjRC0EMR
RRNRPD25jRR:=jR;
R#CDCR
RRNRPD25jRR:=4R;
R8CMR;HV
sRRCs0kMNRPDC;
Mo8RCI0_HE80;k
VMHO0FoMRCI0_HE8058IH0:ERR0HMCsoC2CRs0MksRVDC0CFPsR_0HP#
NNsHLRDCPRND:CRDVP0FC0s_RR:=5Rj,jj,R,2Rj;C
Lo
HMRNRPD25dRR:=o_C0I0H8E5_UI0H8E
2;RNRO#5CRI0H8EFRl82RUR
H#RERICcMRRd|RRR=>P5ND.:2R=;R4
IRRERCM.>R=RDPN5R42:4=R;R
RIMECR=4R>NRPD25jRR:=4R;
RCIEM0RFE#CsRR=>MDkD;R
RCRM8OCN#;R
RskC0sPMRN
D;CRM8o_C0I0H8EO;
F0M#NRM0#H_I8_0ENNss$RR:D0CVFsPC_:0R=CRo0H_I850EI0H8E
2;O#FM00NMRI#_HE80_sNsNn$_cRR:D0CVFsPC_.0_RR:=o_C0I0H8EH5I820E;k
VMHO0FoMRCM0_k4l_.8U5CEb0:MRH0CCoss2RCs0kMMRH0CCos#RH
sPNHDNLCNRPDRR:HCM0oRCs:j=R;C
Lo
HMRNRPD=R:Rb8C04E/.
U;RVRHR855CEb0R8lFRU4.2RR>424.RC0EMR
RRNRPD=R:RDPNR4+R;R
RCRM8H
V;RCRs0MksRDPN;M
C8CRo0k_Ml._4UV;
k0MOHRFMo_C0D0CVFsPC_5nc80CbERR:HCM0o2CsR0sCkRsMHCM0oRCsHL#
CMoH
sRRCs0kMC58bR0ElRF842.U;M
C8CRo0C_DVP0FCns_cV;
k0MOHRFMo_C0M_kln8c5CEb0RH:RMo0CCRs2skC0sHMRMo0CCHsR#N
PsLHNDPCRN:DRR0HMCsoCRR:=jL;
CMoH
HRRV8R5CEb0RR<=4R4.NRM880CbERR>cRU20MEC
RRRRNRPD=R:R
4;RMRC8VRH;R
RskC0sPMRN
D;CRM8o_C0M_kln
c;VOkM0MHFR0oC_VDC0CFPsC58bR0E:MRH0CCosl;RN:GRR0HMCsoC2CRs0MksR0HMCsoCR