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Lots of changes, trying to get ROM working
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I think I did some funny math errors so new goal is 8-bit pcm
This commit is contained in:
Waylon Cude 2025-06-05 18:48:53 -07:00
parent 02e2d77640
commit 7980424dc8
18 changed files with 387489 additions and 134 deletions
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72
Nexys-A7-100T-Master.xdc
View File

@ -31,7 +31,7 @@ set_property CONFIG_VOLTAGE 3.3 [current_design]
#set_property -dict { PACKAGE_PIN V10 IOSTANDARD LVCMOS33 } [get_ports { SW[15] }]; #IO_L21P_T3_DQS_14 Sch=sw[15] #set_property -dict { PACKAGE_PIN V10 IOSTANDARD LVCMOS33 } [get_ports { SW[15] }]; #IO_L21P_T3_DQS_14 Sch=sw[15]
## LEDs ## LEDs
#set_property -dict { PACKAGE_PIN H17 IOSTANDARD LVCMOS33 } [get_ports { LED[0] }]; #IO_L18P_T2_A24_15 Sch=led[0] set_property -dict {PACKAGE_PIN H17 IOSTANDARD LVCMOS33} [get_ports {LED[0]}]
#set_property -dict { PACKAGE_PIN K15 IOSTANDARD LVCMOS33 } [get_ports { LED[1] }]; #IO_L24P_T3_RS1_15 Sch=led[1] #set_property -dict { PACKAGE_PIN K15 IOSTANDARD LVCMOS33 } [get_ports { LED[1] }]; #IO_L24P_T3_RS1_15 Sch=led[1]
#set_property -dict { PACKAGE_PIN J13 IOSTANDARD LVCMOS33 } [get_ports { LED[2] }]; #IO_L17N_T2_A25_15 Sch=led[2] #set_property -dict { PACKAGE_PIN J13 IOSTANDARD LVCMOS33 } [get_ports { LED[2] }]; #IO_L17N_T2_A25_15 Sch=led[2]
#set_property -dict { PACKAGE_PIN N14 IOSTANDARD LVCMOS33 } [get_ports { LED[3] }]; #IO_L8P_T1_D11_14 Sch=led[3] #set_property -dict { PACKAGE_PIN N14 IOSTANDARD LVCMOS33 } [get_ports { LED[3] }]; #IO_L8P_T1_D11_14 Sch=led[3]
@ -182,8 +182,8 @@ set_property -dict {PACKAGE_PIN M17 IOSTANDARD LVCMOS33} [get_ports BTNR]
#set_property -dict { PACKAGE_PIN F5 IOSTANDARD LVCMOS33 } [get_ports { M_LRSEL }]; #IO_0_35 Sch=m_lrsel #set_property -dict { PACKAGE_PIN F5 IOSTANDARD LVCMOS33 } [get_ports { M_LRSEL }]; #IO_0_35 Sch=m_lrsel
##PWM Audio Amplifier ##PWM Audio Amplifier
#set_property -dict { PACKAGE_PIN A11 IOSTANDARD LVCMOS33 } [get_ports { AUD_PWM }]; #IO_L4N_T0_15 Sch=aud_pwm set_property -dict {PACKAGE_PIN A11 IOSTANDARD LVCMOS33} [get_ports AUD_PWM]
#set_property -dict { PACKAGE_PIN D12 IOSTANDARD LVCMOS33 } [get_ports { AUD_SD }]; #IO_L6P_T0_15 Sch=aud_sd set_property -dict {PACKAGE_PIN D12 IOSTANDARD LVCMOS33} [get_ports AUD_SD]
##USB-RS232 Interface ##USB-RS232 Interface
#set_property -dict { PACKAGE_PIN C4 IOSTANDARD LVCMOS33 } [get_ports { UART_TXD_IN }]; #IO_L7P_T1_AD6P_35 Sch=uart_txd_in #set_property -dict { PACKAGE_PIN C4 IOSTANDARD LVCMOS33 } [get_ports { UART_TXD_IN }]; #IO_L7P_T1_AD6P_35 Sch=uart_txd_in
@ -216,69 +216,3 @@ set_property -dict {PACKAGE_PIN M17 IOSTANDARD LVCMOS33} [get_ports BTNR]
#set_property -dict { PACKAGE_PIN M14 IOSTANDARD LVCMOS33 } [get_ports { QSPI_DQ[3] }]; #IO_L2N_T0_D03_14 Sch=qspi_dq[3] #set_property -dict { PACKAGE_PIN M14 IOSTANDARD LVCMOS33 } [get_ports { QSPI_DQ[3] }]; #IO_L2N_T0_D03_14 Sch=qspi_dq[3]
#set_property -dict { PACKAGE_PIN L13 IOSTANDARD LVCMOS33 } [get_ports { QSPI_CSN }]; #IO_L6P_T0_FCS_B_14 Sch=qspi_csn #set_property -dict { PACKAGE_PIN L13 IOSTANDARD LVCMOS33 } [get_ports { QSPI_CSN }]; #IO_L6P_T0_FCS_B_14 Sch=qspi_csn
create_debug_core u_ila_0 ila
set_property ALL_PROBE_SAME_MU true [get_debug_cores u_ila_0]
set_property ALL_PROBE_SAME_MU_CNT 1 [get_debug_cores u_ila_0]
set_property C_ADV_TRIGGER false [get_debug_cores u_ila_0]
set_property C_DATA_DEPTH 1024 [get_debug_cores u_ila_0]
set_property C_EN_STRG_QUAL false [get_debug_cores u_ila_0]
set_property C_INPUT_PIPE_STAGES 0 [get_debug_cores u_ila_0]
set_property C_TRIGIN_EN false [get_debug_cores u_ila_0]
set_property C_TRIGOUT_EN false [get_debug_cores u_ila_0]
set_property port_width 1 [get_debug_ports u_ila_0/clk]
connect_debug_port u_ila_0/clk [get_nets [list CLK100MHZ_IBUF_BUFG]]
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe0]
set_property port_width 6 [get_debug_ports u_ila_0/probe0]
connect_debug_port u_ila_0/probe0 [get_nets [list {seconds_reg[0]} {seconds_reg[1]} {seconds_reg[2]} {seconds_reg[3]} {seconds_reg[4]} {seconds_reg[5]}]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe1]
set_property port_width 6 [get_debug_ports u_ila_0/probe1]
connect_debug_port u_ila_0/probe1 [get_nets [list {minutes[0]} {minutes[1]} {minutes[2]} {minutes[3]} {minutes[4]} {minutes[5]}]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe2]
set_property port_width 3 [get_debug_ports u_ila_0/probe2]
connect_debug_port u_ila_0/probe2 [get_nets [list {playbackController/current[0]} {playbackController/current[1]} {playbackController/current[2]}]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe3]
set_property port_width 6 [get_debug_ports u_ila_0/probe3]
connect_debug_port u_ila_0/probe3 [get_nets [list {hours_reg[0]} {hours_reg[1]} {hours_reg[2]} {hours_reg[3]} {hours_reg[4]} {hours_reg[5]}]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe4]
set_property port_width 3 [get_debug_ports u_ila_0/probe4]
connect_debug_port u_ila_0/probe4 [get_nets [list {anodeDriver/mux_select[0]} {anodeDriver/mux_select[1]} {anodeDriver/mux_select[2]}]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe5]
set_property port_width 8 [get_debug_ports u_ila_0/probe5]
connect_debug_port u_ila_0/probe5 [get_nets [list {AN_OBUF[0]} {AN_OBUF[1]} {AN_OBUF[2]} {AN_OBUF[3]} {AN_OBUF[4]} {AN_OBUF[5]} {AN_OBUF[6]} {AN_OBUF[7]}]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe6]
set_property port_width 1 [get_debug_ports u_ila_0/probe6]
connect_debug_port u_ila_0/probe6 [get_nets [list CA_OBUF]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe7]
set_property port_width 1 [get_debug_ports u_ila_0/probe7]
connect_debug_port u_ila_0/probe7 [get_nets [list CB_OBUF]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe8]
set_property port_width 1 [get_debug_ports u_ila_0/probe8]
connect_debug_port u_ila_0/probe8 [get_nets [list CC_OBUF]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe9]
set_property port_width 1 [get_debug_ports u_ila_0/probe9]
connect_debug_port u_ila_0/probe9 [get_nets [list CD_OBUF]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe10]
set_property port_width 1 [get_debug_ports u_ila_0/probe10]
connect_debug_port u_ila_0/probe10 [get_nets [list CE_OBUF]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe11]
set_property port_width 1 [get_debug_ports u_ila_0/probe11]
connect_debug_port u_ila_0/probe11 [get_nets [list CF_OBUF]]
create_debug_port u_ila_0 probe
set_property PROBE_TYPE DATA_AND_TRIGGER [get_debug_ports u_ila_0/probe12]
set_property port_width 1 [get_debug_ports u_ila_0/probe12]
connect_debug_port u_ila_0/probe12 [get_nets [list CG_OBUF]]
set_property C_CLK_INPUT_FREQ_HZ 300000000 [get_debug_cores dbg_hub]
set_property C_ENABLE_CLK_DIVIDER false [get_debug_cores dbg_hub]
set_property C_USER_SCAN_CHAIN 1 [get_debug_cores dbg_hub]
connect_debug_port dbg_hub/clk [get_nets CLK100MHZ_IBUF_BUFG]

277
SDVD.xpr
View File

@ -44,7 +44,8 @@
<Option Name="SimulatorGccVersionRiviera" Val="9.3.0"/> <Option Name="SimulatorGccVersionRiviera" Val="9.3.0"/>
<Option Name="SimulatorGccVersionActiveHdl" Val="9.3.0"/> <Option Name="SimulatorGccVersionActiveHdl" Val="9.3.0"/>
<Option Name="BoardPart" Val=""/> <Option Name="BoardPart" Val=""/>
<Option Name="ActiveSimSet" Val="sim_1"/> <Option Name="SourceMgmtMode" Val="DisplayOnly"/>
<Option Name="ActiveSimSet" Val="rom_sd_tb"/>
<Option Name="DefaultLib" Val="xil_defaultlib"/> <Option Name="DefaultLib" Val="xil_defaultlib"/>
<Option Name="ProjectType" Val="Default"/> <Option Name="ProjectType" Val="Default"/>
<Option Name="IPRepoPath" Val="$PPRDIR/../../../fpga/vivado-library"/> <Option Name="IPRepoPath" Val="$PPRDIR/../../../fpga/vivado-library"/>
@ -60,7 +61,7 @@
<Option Name="IPStaticSourceDir" Val="$PIPUSERFILESDIR/ipstatic"/> <Option Name="IPStaticSourceDir" Val="$PIPUSERFILESDIR/ipstatic"/>
<Option Name="EnableBDX" Val="FALSE"/> <Option Name="EnableBDX" Val="FALSE"/>
<Option Name="DSABoardId" Val="nexys-a7-100t"/> <Option Name="DSABoardId" Val="nexys-a7-100t"/>
<Option Name="WTXSimLaunchSim" Val="87"/> <Option Name="WTXSimLaunchSim" Val="133"/>
<Option Name="WTModelSimLaunchSim" Val="0"/> <Option Name="WTModelSimLaunchSim" Val="0"/>
<Option Name="WTQuestaLaunchSim" Val="0"/> <Option Name="WTQuestaLaunchSim" Val="0"/>
<Option Name="WTIesLaunchSim" Val="0"/> <Option Name="WTIesLaunchSim" Val="0"/>
@ -91,6 +92,27 @@
<FileSets Version="1" Minor="32"> <FileSets Version="1" Minor="32">
<FileSet Name="sources_1" Type="DesignSrcs" RelSrcDir="$PSRCDIR/sources_1" RelGenDir="$PGENDIR/sources_1"> <FileSet Name="sources_1" Type="DesignSrcs" RelSrcDir="$PSRCDIR/sources_1" RelGenDir="$PGENDIR/sources_1">
<Filter Type="Srcs"/> <Filter Type="Srcs"/>
<File Path="$PPRDIR/lib/audio_buffer_interface.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/lib/sdvd_defs.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/design/audio/audio_buffer.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/design/debouncer.sv"> <File Path="$PPRDIR/design/debouncer.sv">
<FileInfo> <FileInfo>
<Attr Name="UsedIn" Val="synthesis"/> <Attr Name="UsedIn" Val="synthesis"/>
@ -119,6 +141,13 @@
<Attr Name="UsedIn" Val="simulation"/> <Attr Name="UsedIn" Val="simulation"/>
</FileInfo> </FileInfo>
</File> </File>
<File Path="$PPRDIR/design/modular_clock_gen.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/design/playback_controller.sv"> <File Path="$PPRDIR/design/playback_controller.sv">
<FileInfo> <FileInfo>
<Attr Name="UsedIn" Val="synthesis"/> <Attr Name="UsedIn" Val="synthesis"/>
@ -126,6 +155,20 @@
<Attr Name="UsedIn" Val="simulation"/> <Attr Name="UsedIn" Val="simulation"/>
</FileInfo> </FileInfo>
</File> </File>
<File Path="$PPRDIR/design/audio/pwm.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/design/sd/rom_sd.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/design/segment_display/seconds_display.sv"> <File Path="$PPRDIR/design/segment_display/seconds_display.sv">
<FileInfo> <FileInfo>
<Attr Name="UsedIn" Val="synthesis"/> <Attr Name="UsedIn" Val="synthesis"/>
@ -140,27 +183,16 @@
<Attr Name="UsedIn" Val="simulation"/> <Attr Name="UsedIn" Val="simulation"/>
</FileInfo> </FileInfo>
</File> </File>
<File Path="$PPRDIR/design/sdvd_defs.sv"> <File Path="$PPRDIR/lib/assertion_error.sv">
<FileInfo> <FileInfo>
<Attr Name="AutoDisabled" Val="1"/>
<Attr Name="UsedIn" Val="synthesis"/> <Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/> <Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/> <Attr Name="UsedIn" Val="simulation"/>
</FileInfo> </FileInfo>
</File> </File>
<File Path="$PPRDIR/design/audio/audio_buffer.sv"> <File Path="$PPRDIR/roms/roundabout.mem">
<FileInfo> <FileInfo>
<Attr Name="AutoDisabled" Val="1"/>
<Attr Name="UsedIn" Val="synthesis"/> <Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/design/audio/pwm.sv">
<FileInfo>
<Attr Name="AutoDisabled" Val="1"/>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/> <Attr Name="UsedIn" Val="simulation"/>
</FileInfo> </FileInfo>
</File> </File>
@ -169,6 +201,7 @@
<Option Name="TopModule" Val="nexys_a7_top"/> <Option Name="TopModule" Val="nexys_a7_top"/>
<Option Name="TopAutoSet" Val="TRUE"/> <Option Name="TopAutoSet" Val="TRUE"/>
<Option Name="VerilogDir" Val="$PPRDIR/design"/> <Option Name="VerilogDir" Val="$PPRDIR/design"/>
<Option Name="VerilogDir" Val="$PPRDIR/lib"/>
</Config> </Config>
</FileSet> </FileSet>
<FileSet Name="constrs_1" Type="Constrs" RelSrcDir="$PSRCDIR/constrs_1" RelGenDir="$PGENDIR/constrs_1"> <FileSet Name="constrs_1" Type="Constrs" RelSrcDir="$PSRCDIR/constrs_1" RelGenDir="$PGENDIR/constrs_1">
@ -260,16 +293,15 @@
</FileSet> </FileSet>
<FileSet Name="playback_controller_tb" Type="SimulationSrcs" RelSrcDir="$PSRCDIR/playback_controller_tb" RelGenDir="$PGENDIR/playback_controller_tb"> <FileSet Name="playback_controller_tb" Type="SimulationSrcs" RelSrcDir="$PSRCDIR/playback_controller_tb" RelGenDir="$PGENDIR/playback_controller_tb">
<Filter Type="Srcs"/> <Filter Type="Srcs"/>
<File Path="$PPRDIR/verification/playback_controller_tb.sv"> <File Path="$PPRDIR/lib/sdvd_defs.sv">
<FileInfo> <FileInfo>
<Attr Name="UsedIn" Val="synthesis"/> <Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/> <Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/> <Attr Name="UsedIn" Val="simulation"/>
</FileInfo> </FileInfo>
</File> </File>
<File Path="$PPRDIR/design/sdvd_defs.sv"> <File Path="$PPRDIR/verification/playback_controller_tb.sv">
<FileInfo> <FileInfo>
<Attr Name="AutoDisabled" Val="1"/>
<Attr Name="UsedIn" Val="synthesis"/> <Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/> <Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/> <Attr Name="UsedIn" Val="simulation"/>
@ -320,6 +352,78 @@
<Option Name="xsim.simulate.runtime" Val="10s"/> <Option Name="xsim.simulate.runtime" Val="10s"/>
</Config> </Config>
</FileSet> </FileSet>
<FileSet Name="rom_sd_tb" Type="SimulationSrcs" RelSrcDir="$PSRCDIR/rom_sd_tb" RelGenDir="$PGENDIR/rom_sd_tb">
<Filter Type="Srcs"/>
<File Path="$PPRDIR/roms/testfile.mem">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/verification/sd/rom_sd_tb.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/verification/waveform_configs/rom_sd_waveform.wcfg">
<FileInfo>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<File Path="$PPRDIR/roms/consecutive.mem">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<Config>
<Option Name="DesignMode" Val="RTL"/>
<Option Name="TopModule" Val="rom_sd_tb"/>
<Option Name="TopLib" Val="xil_defaultlib"/>
<Option Name="TransportPathDelay" Val="0"/>
<Option Name="TransportIntDelay" Val="0"/>
<Option Name="SelectedSimModel" Val="rtl"/>
<Option Name="PamDesignTestbench" Val=""/>
<Option Name="PamDutBypassFile" Val="xil_dut_bypass"/>
<Option Name="PamSignalDriverFile" Val="xil_bypass_driver"/>
<Option Name="PamPseudoTop" Val="pseudo_tb"/>
<Option Name="SrcSet" Val="sources_1"/>
<Option Name="XSimWcfgFile" Val="$PPRDIR/verification/waveform_configs/rom_sd_waveform.wcfg"/>
<Option Name="CosimPdi" Val=""/>
<Option Name="CosimPlatform" Val=""/>
<Option Name="CosimElf" Val=""/>
<Option Name="xsim.simulate.runtime" Val="1s"/>
</Config>
</FileSet>
<FileSet Name="pwm_tb" Type="SimulationSrcs" RelSrcDir="$PSRCDIR/pwm_tb" RelGenDir="$PGENDIR/pwm_tb">
<Filter Type="Srcs"/>
<File Path="$PPRDIR/verification/audio/pwm_tb.sv">
<FileInfo>
<Attr Name="UsedIn" Val="synthesis"/>
<Attr Name="UsedIn" Val="implementation"/>
<Attr Name="UsedIn" Val="simulation"/>
</FileInfo>
</File>
<Config>
<Option Name="DesignMode" Val="RTL"/>
<Option Name="TopModule" Val="pwm_tb"/>
<Option Name="TopLib" Val="xil_defaultlib"/>
<Option Name="TransportPathDelay" Val="0"/>
<Option Name="TransportIntDelay" Val="0"/>
<Option Name="SelectedSimModel" Val="rtl"/>
<Option Name="PamDesignTestbench" Val=""/>
<Option Name="PamDutBypassFile" Val="xil_dut_bypass"/>
<Option Name="PamSignalDriverFile" Val="xil_bypass_driver"/>
<Option Name="PamPseudoTop" Val="pseudo_tb"/>
<Option Name="SrcSet" Val="sources_1"/>
<Option Name="CosimPdi" Val=""/>
<Option Name="CosimPlatform" Val=""/>
<Option Name="CosimElf" Val=""/>
<Option Name="xsim.simulate.runtime" Val="1s"/>
</Config>
</FileSet>
</FileSets> </FileSets>
<Simulators> <Simulators>
<Simulator Name="XSim"> <Simulator Name="XSim">
@ -345,9 +449,7 @@
<Runs Version="1" Minor="22"> <Runs Version="1" Minor="22">
<Run Id="synth_1" Type="Ft3:Synth" SrcSet="sources_1" Part="xc7a100tcsg324-1" ConstrsSet="constrs_1" Description="Vivado Synthesis Defaults" AutoIncrementalCheckpoint="true" IncrementalCheckpoint="$PSRCDIR/utils_1/imports/synth_1/nexys_a7_top.dcp" WriteIncrSynthDcp="false" State="current" Dir="$PRUNDIR/synth_1" IncludeInArchive="true" IsChild="false" AutoIncrementalDir="$PSRCDIR/utils_1/imports/synth_1" AutoRQSDir="$PSRCDIR/utils_1/imports/synth_1" ParallelReportGen="true"> <Run Id="synth_1" Type="Ft3:Synth" SrcSet="sources_1" Part="xc7a100tcsg324-1" ConstrsSet="constrs_1" Description="Vivado Synthesis Defaults" AutoIncrementalCheckpoint="true" IncrementalCheckpoint="$PSRCDIR/utils_1/imports/synth_1/nexys_a7_top.dcp" WriteIncrSynthDcp="false" State="current" Dir="$PRUNDIR/synth_1" IncludeInArchive="true" IsChild="false" AutoIncrementalDir="$PSRCDIR/utils_1/imports/synth_1" AutoRQSDir="$PSRCDIR/utils_1/imports/synth_1" ParallelReportGen="true">
<Strategy Version="1" Minor="2"> <Strategy Version="1" Minor="2">
<StratHandle Name="Vivado Synthesis Defaults" Flow="Vivado Synthesis 2024"> <StratHandle Name="Vivado Synthesis Defaults" Flow="Vivado Synthesis 2024"/>
<Desc>Vivado Synthesis Defaults</Desc>
</StratHandle>
<Step Id="synth_design"/> <Step Id="synth_design"/>
</Strategy> </Strategy>
<GeneratedRun Dir="$PRUNDIR" File="gen_run.xml"/> <GeneratedRun Dir="$PRUNDIR" File="gen_run.xml"/>
@ -357,9 +459,7 @@
</Run> </Run>
<Run Id="impl_1" Type="Ft2:EntireDesign" Part="xc7a100tcsg324-1" ConstrsSet="constrs_1" Description="Default settings for Implementation." AutoIncrementalCheckpoint="false" WriteIncrSynthDcp="false" State="current" Dir="$PRUNDIR/impl_1" SynthRun="synth_1" IncludeInArchive="true" IsChild="false" GenFullBitstream="true" AutoIncrementalDir="$PSRCDIR/utils_1/imports/impl_1" LaunchOptions="-jobs 2 " AutoRQSDir="$PSRCDIR/utils_1/imports/impl_1" ParallelReportGen="true"> <Run Id="impl_1" Type="Ft2:EntireDesign" Part="xc7a100tcsg324-1" ConstrsSet="constrs_1" Description="Default settings for Implementation." AutoIncrementalCheckpoint="false" WriteIncrSynthDcp="false" State="current" Dir="$PRUNDIR/impl_1" SynthRun="synth_1" IncludeInArchive="true" IsChild="false" GenFullBitstream="true" AutoIncrementalDir="$PSRCDIR/utils_1/imports/impl_1" LaunchOptions="-jobs 2 " AutoRQSDir="$PSRCDIR/utils_1/imports/impl_1" ParallelReportGen="true">
<Strategy Version="1" Minor="2"> <Strategy Version="1" Minor="2">
<StratHandle Name="Vivado Implementation Defaults" Flow="Vivado Implementation 2024"> <StratHandle Name="Vivado Implementation Defaults" Flow="Vivado Implementation 2024"/>
<Desc>Default settings for Implementation.</Desc>
</StratHandle>
<Step Id="init_design"/> <Step Id="init_design"/>
<Step Id="opt_design"/> <Step Id="opt_design"/>
<Step Id="power_opt_design"/> <Step Id="power_opt_design"/>
@ -633,6 +733,135 @@
<Report Name="ROUTE_DESIGN.REPORT_METHODOLOGY" Enabled="1"/> <Report Name="ROUTE_DESIGN.REPORT_METHODOLOGY" Enabled="1"/>
<RQSFiles/> <RQSFiles/>
</Run> </Run>
<Run Id="impl_1_copy_3" Type="Ft2:EntireDesign" Part="xc7a100tcsg324-1" ConstrsSet="constrs_1" Description="Default settings for Implementation." AutoIncrementalCheckpoint="false" WriteIncrSynthDcp="false" SynthRun="synth_1" IncludeInArchive="true" IsChild="false" GenFullBitstream="true" AutoIncrementalDir="$PSRCDIR/utils_1/imports/impl_1/impl_1_copy_3" AutoRQSDir="$PSRCDIR/utils_1/imports/impl_1/impl_1_copy_3" ParallelReportGen="true">
<Strategy Version="1" Minor="2">
<StratHandle Name="Vivado Implementation Defaults" Flow="Vivado Implementation 2024"/>
<Step Id="init_design"/>
<Step Id="opt_design"/>
<Step Id="power_opt_design"/>
<Step Id="place_design"/>
<Step Id="post_place_power_opt_design"/>
<Step Id="phys_opt_design"/>
<Step Id="route_design"/>
<Step Id="post_route_phys_opt_design"/>
<Step Id="write_bitstream"/>
</Strategy>
<ReportStrategy Name="Vivado Implementation Default Reports" Flow="Vivado Implementation 2024" CtrlBit="true">
<ReportConfig DisplayName="Timing Summary - Design Initialization" Name="impl_1_copy_3_init_report_timing_summary_0" Spec="report_timing_summary" RunStep="init_design" ReportFile="nexys_a7_top_timing_summary_init_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="DRC - Opt Design" Name="impl_1_copy_3_opt_report_drc_0" Spec="report_drc" RunStep="opt_design" ReportFile="nexys_a7_top_drc_opted_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Timing Summary - Opt Design" Name="impl_1_copy_3_opt_report_timing_summary_0" Spec="report_timing_summary" RunStep="opt_design" ReportFile="nexys_a7_top_timing_summary_opted_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Timing Summary - Power Opt Design" Name="impl_1_copy_3_power_opt_report_timing_summary_0" Spec="report_timing_summary" RunStep="power_opt_design" ReportFile="nexys_a7_top_timing_summary_pwropted_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="IO - Place Design" Name="impl_1_copy_3_place_report_io_0" Spec="report_io" RunStep="place_design" ReportFile="nexys_a7_top_io_placed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
</ReportConfig>
<ReportConfig DisplayName="Utilization - Place Design" Name="impl_1_copy_3_place_report_utilization_0" Spec="report_utilization" RunStep="place_design" ReportFile="nexys_a7_top_utilization_placed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Control Sets - Place Design" Name="impl_1_copy_3_place_report_control_sets_0" Spec="report_control_sets" RunStep="place_design" ReportFile="nexys_a7_top_control_sets_placed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="verbose" Type="" Value="true"/>
</ReportConfig>
<ReportConfig DisplayName="Incremental Reuse - Place Design" Name="impl_1_copy_3_place_report_incremental_reuse_0" Spec="report_incremental_reuse" RunStep="place_design" ReportFile="nexys_a7_top_incremental_reuse_pre_placed.rpt_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="dummy_option" Type="string"/>
</ReportConfig>
<ReportConfig DisplayName="Incremental Reuse - Place Design" Name="impl_1_copy_3_place_report_incremental_reuse_1" Spec="report_incremental_reuse" RunStep="place_design" ReportFile="nexys_a7_top_incremental_reuse_placed_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="dummy_option" Type="string"/>
</ReportConfig>
<ReportConfig DisplayName="Timing Summary - Place Design" Name="impl_1_copy_3_place_report_timing_summary_0" Spec="report_timing_summary" RunStep="place_design" ReportFile="nexys_a7_top_timing_summary_placed_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Timing Summary - Post-Place Power Opt Design" Name="impl_1_copy_3_post_place_power_opt_report_timing_summary_0" Spec="report_timing_summary" RunStep="post_place_power_opt_design" ReportFile="nexys_a7_top_timing_summary_postplace_pwropted_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Timing Summary - Post-Place Phys Opt Design" Name="impl_1_copy_3_phys_opt_report_timing_summary_0" Spec="report_timing_summary" RunStep="phys_opt_design" ReportFile="nexys_a7_top_timing_summary_physopted_1.rpt" Version="1" Minor="0" IsDisabled="true">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="implementation_log" Name="impl_1_copy_3_route_implementation_log_0" Spec="" RunStep="route_design" ReportFile="nexys_a7_top.vdi">
<ReportConfigOption Name="dummy_option" Type="string"/>
</ReportConfig>
<ReportConfig DisplayName="DRC - Route Design" Name="impl_1_copy_3_route_report_drc_0" Spec="report_drc" RunStep="route_design" ReportFile="nexys_a7_top_drc_routed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Methodology - Route Design" Name="impl_1_copy_3_route_report_methodology_0" Spec="report_methodology" RunStep="route_design" ReportFile="nexys_a7_top_methodology_drc_routed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Power - Route Design" Name="impl_1_copy_3_route_report_power_0" Spec="report_power" RunStep="route_design" ReportFile="nexys_a7_top_power_routed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Route Status - Route Design" Name="impl_1_copy_3_route_report_route_status_0" Spec="report_route_status" RunStep="route_design" ReportFile="nexys_a7_top_route_status_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Timing Summary - Route Design" Name="impl_1_copy_3_route_report_timing_summary_0" Spec="report_timing_summary" RunStep="route_design" ReportFile="nexys_a7_top_timing_summary_routed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Incremental Reuse - Route Design" Name="impl_1_copy_3_route_report_incremental_reuse_0" Spec="report_incremental_reuse" RunStep="route_design" ReportFile="nexys_a7_top_incremental_reuse_routed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
</ReportConfig>
<ReportConfig DisplayName="Clock Utilization - Route Design" Name="impl_1_copy_3_route_report_clock_utilization_0" Spec="report_clock_utilization" RunStep="route_design" ReportFile="nexys_a7_top_clock_utilization_routed_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="dummy_option" Type="string"/>
</ReportConfig>
<ReportConfig DisplayName="Bus Skew - Route Design" Name="impl_1_copy_3_route_report_bus_skew_0" Spec="report_bus_skew" RunStep="route_design" ReportFile="nexys_a7_top_bus_skew_routed_1.rpt" Version="1" Minor="1">
<ReportConfigOption Name="warn_on_violation" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Timing Summary - Post-Route Phys Opt Design" Name="impl_1_copy_3_post_route_phys_opt_report_timing_summary_0" Spec="report_timing_summary" RunStep="post_route_phys_opt_design" ReportFile="nexys_a7_top_timing_summary_postroute_physopted_1.rpt" Version="1" Minor="0">
<ReportConfigOption Name="max_paths" Type="" Value="10"/>
<ReportConfigOption Name="report_unconstrained" Type="" Value="true"/>
<ReportConfigOption Name="warn_on_violation" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="Bus Skew - Post-Route Phys Opt Design" Name="impl_1_copy_3_post_route_phys_opt_report_bus_skew_0" Spec="report_bus_skew" RunStep="post_route_phys_opt_design" ReportFile="nexys_a7_top_bus_skew_postroute_physopted_1.rpt" Version="1" Minor="1">
<ReportConfigOption Name="warn_on_violation" Type="" Value="true"/>
<ReportConfigOutputOption Name="pb" Type="string" Value=""/>
<ReportConfigOutputOption Name="rpx" Type="string" Value=""/>
</ReportConfig>
<ReportConfig DisplayName="implementation_log" Name="impl_1_copy_3_bitstream_implementation_log_0" Spec="" RunStep="write_bitstream" ReportFile="nexys_a7_top.vdi">
<ReportConfigOption Name="dummy_option" Type="string"/>
</ReportConfig>
</ReportStrategy>
<Report Name="ROUTE_DESIGN.REPORT_METHODOLOGY" Enabled="1"/>
<RQSFiles/>
</Run>
</Runs> </Runs>
<Board/> <Board/>
<DashboardSummary Version="1" Minor="0"> <DashboardSummary Version="1" Minor="0">

18
design/audio/audio_buffer.sv
View File

@ -31,11 +31,6 @@ module audio_buffer(
// Inputs for the memory buffer // Inputs for the memory buffer
audio_buffer_interface.receiver driver audio_buffer_interface.receiver driver
); );
// Whether the current address being read from is in the upper or lower
// half of the 2KiB buffer
let address_half = driver.address_half;
logic [9:0] address; logic [9:0] address;
// State register // State register
@ -45,8 +40,11 @@ logic [15:0] doutb;
// A single bit counter, to avoid feeding samples given the 1 cycle read delay // A single bit counter, to avoid feeding samples given the 1 cycle read delay
logic delay; logic delay;
// Whether the current address being read from is in the upper or lower
// half of the 2KiB buffer
//
// The MSB of the address == higher/lower half address // The MSB of the address == higher/lower half address
assign address_half = address[9]; assign driver.address_half = address[9];
always_ff @(posedge clk) begin always_ff @(posedge clk) begin
enb <= 0; enb <= 0;
@ -143,12 +141,18 @@ buffer (
.rstb(reset), // 1-bit input: Reset signal for the final port B output register stage. .rstb(reset), // 1-bit input: Reset signal for the final port B output register stage.
// Synchronously resets output port doutb to the value specified by // Synchronously resets output port doutb to the value specified by
// parameter READ_RESET_VALUE_B. // parameter READ_RESET_VALUE_B.
.wea(driver.ena) // WRITE_DATA_WIDTH_A/BYTE_WRITE_WIDTH_A-bit input: Write enable vector .wea(driver.ena), // WRITE_DATA_WIDTH_A/BYTE_WRITE_WIDTH_A-bit input: Write enable vector
// for port A input data port dina. 1 bit wide when word-wide writes are // for port A input data port dina. 1 bit wide when word-wide writes are
// used. In byte-wide write configurations, each bit controls the // used. In byte-wide write configurations, each bit controls the
// writing one byte of dina to address addra. For example, to // writing one byte of dina to address addra. For example, to
// synchronously write only bits [15-8] of dina when WRITE_DATA_WIDTH_A // synchronously write only bits [15-8] of dina when WRITE_DATA_WIDTH_A
// is 32, wea would be 4'b0010. // is 32, wea would be 4'b0010.
// Extra inputs that I guess I need
.sleep(0),
.injectsbiterra(0),
.injectdbiterra(0),
// With a latency of 1 this surely does not matter
.regceb(enb)
); );
endmodule endmodule

8
design/audio/pwm.sv
View File

@ -16,8 +16,11 @@ module pwm(
// The audio output pin // The audio output pin
output wire pwm_pin output wire pwm_pin
); );
// This can't be 16 or we are slowing the audio rate down by a factor of
// 2^5=32
parameter DEPTH=8;
logic [15:0] pulse_counter; logic [DEPTH-1:0] pulse_counter;
logic [15:0] sample_buffer; logic [15:0] sample_buffer;
logic should_output; logic should_output;
@ -27,6 +30,7 @@ begin
begin begin
pulse_counter <= 0; pulse_counter <= 0;
sample_buffer <= 0; sample_buffer <= 0;
should_output <= 0;
end end
else else
@ -36,7 +40,7 @@ begin
pulse_counter <= pulse_counter + 1; pulse_counter <= pulse_counter + 1;
if (pulse_counter < sample_buffer) if (pulse_counter < sample_buffer[15-:DEPTH])
should_output <= 1; should_output <= 1;
else else
should_output <= 0; should_output <= 0;

22
design/modular_clock_gen.sv Normal file
View File

@ -0,0 +1,22 @@
module modular_clock_gen(
input clk, reset,
output oclk
);
parameter DIVISOR;
logic [$clog2(DIVISOR)-1:0] counter;
// clock will be high for about half of the cycle, depending on integer
// rounding
assign oclk = counter < (DIVISOR/2);
always_ff @(posedge clk) begin
if (reset)
counter <= DIVISOR-1;
else if (counter == 0)
counter <= DIVISOR-1;
else
counter <= counter - 1;
end
endmodule

35
design/nexys_a7_top.sv
View File

@ -12,8 +12,10 @@ import sdvd_defs::SPEED;
module nexys_a7_top( module nexys_a7_top(
input logic CLK100MHZ, CPU_RESETN, input logic CLK100MHZ, CPU_RESETN,
input logic BTNC, BTNR, input logic BTNC, BTNR,
output logic AUD_PWM, AUD_SD,
output logic CA,CB,CC,CD,CE,CF,CG, output logic CA,CB,CC,CD,CE,CF,CG,
output logic [7:0] AN output logic [7:0] AN,
output wire LED[0:0]
); );
// Active high reset // Active high reset
@ -21,10 +23,13 @@ wire reset;
assign reset = ~CPU_RESETN; assign reset = ~CPU_RESETN;
logic clk_1khz, clk_10hz; logic clk_1khz, clk_10hz;
logic clk_48khz, clk_1mhz;
logic seconds_pulse; logic seconds_pulse;
SPEED speed; SPEED speed;
audio_buffer_interface audio_interface();
// Map C{A-G} to an array of 7-segment displays // Map C{A-G} to an array of 7-segment displays
wire [6:0] segments [7:0]; wire [6:0] segments [7:0];
wire [2:0] segment_mux_select; wire [2:0] segment_mux_select;
@ -32,18 +37,31 @@ wire [2:0] segment_mux_select;
// These segments are currently unused // These segments are currently unused
assign segments[7] = 0; assign segments[7] = 0;
assign segments[6] = 0; assign segments[6] = 0;
// These are the ones we're using
assign {CA,CB,CC,CD,CE,CF,CG} = ~segments[segment_mux_select]; assign {CA,CB,CC,CD,CE,CF,CG} = ~segments[segment_mux_select];
logic [$clog2(60)-1:0] seconds; logic [$clog2(60)-1:0] seconds;
logic [$clog2(60)-1:0] minutes; logic [$clog2(60)-1:0] minutes;
logic [$clog2(60)-1:0] hours; logic [$clog2(60)-1:0] hours;
logic [15:0] audio_sample;
logic sd_ready;
logic playing;
assign LED[0] = playing;
assign AUD_SD = playing;
low_freq_clock_gen clockGen(CLK100MHZ, reset, speed, clk_1khz, clk_10hz, seconds_pulse); low_freq_clock_gen clockGen(CLK100MHZ, reset, speed, clk_1khz, clk_10hz, seconds_pulse);
// Create a clock with a divisor of 2083, making ~48khz
modular_clock_gen #(2083) audioClock(CLK100MHZ, reset, clk_48khz);
modular_clock_gen #(100) pwmClock(CLK100MHZ, reset, clk_1mhz);
// Count the number on seconds, hours, and minutes elapsed // Count the number on seconds, hours, and minutes elapsed
// If the speed is faster this will pulse more often than once a second // If the speed is faster this will pulse more often than once a second
// but will still theoretically be a second of video time // but will still theoretically be a second of video time
always_ff @(posedge seconds_pulse) begin always_ff @(posedge seconds_pulse or posedge reset) begin
if (reset) begin if (reset) begin
seconds <= 0; seconds <= 0;
minutes <= 0; minutes <= 0;
@ -72,8 +90,19 @@ seconds_display hoursSegment (hours, segments[5], segments[4]);
// Gets rid of button bouncing // Gets rid of button bouncing
playback_controller playbackController (clk_10hz,reset,BTNC, BTNR, speed); playback_controller playbackController (clk_10hz,reset,BTNC, BTNR, speed);
pwm audioOutput(CLK100MHZ, reset, clk_48khz, audio_sample, AUD_PWM);
audio_buffer audioBuffer(
clk_48khz,
reset,
sd_ready,
'0, // stop signal not used right now
speed,
playing,
audio_sample,
audio_interface.receiver
);
rom_sd romSdPlayer(clk_1mhz,reset,sd_ready,audio_interface.driver);
endmodule endmodule

75
design/sd/rom_sd.sv
View File

@ -10,17 +10,17 @@ module rom_sd(
input logic reset, input logic reset,
output logic ready, output logic ready,
buffer_interface.driver buffer audio_buffer_interface.driver buffer
); );
parameter MEM_FILE = "roundabout.mem";
typedef enum logic [2:0]{ typedef enum logic [3:0]{
RESET, DELAY, WRITEBUF, ENDWRITE, WAIT RESET, DELAY1, DELAY2, DELAY3, WRITEBUF, ENDWRITE1, ENDWRITE2, ENDWRITE3, WAIT
} state_t; } state_t;
state_t current, next; state_t current, next;
// First we write 2048B into the memory buffer, then signal to play it and // First we write 2048B into the memory buffer, then signal to play it and
// wait for half signal to avoid overwriting memory // wait for half signal to avoid overwriting memory
logic initializing;
logic [16:0] rom_addr; logic [16:0] rom_addr;
logic [7:0] rom_data; logic [7:0] rom_data;
logic rom_enable; logic rom_enable;
@ -40,8 +40,8 @@ xpm_memory_sprom #(
.ECC_MODE("no_ecc"), // String .ECC_MODE("no_ecc"), // String
.ECC_TYPE("none"), // String .ECC_TYPE("none"), // String
.IGNORE_INIT_SYNTH(0), // DECIMAL .IGNORE_INIT_SYNTH(0), // DECIMAL
.MEMORY_INIT_FILE("roundabout.mem"), // String .MEMORY_INIT_FILE(MEM_FILE), // String
.MEMORY_INIT_PARAM("0"), // String .MEMORY_INIT_PARAM(""), // String
.MEMORY_OPTIMIZATION("true"), // String .MEMORY_OPTIMIZATION("true"), // String
.MEMORY_PRIMITIVE("auto"), // String .MEMORY_PRIMITIVE("auto"), // String
.MEMORY_SIZE(131072*8), // DECIMAL .MEMORY_SIZE(131072*8), // DECIMAL
@ -63,46 +63,67 @@ xpm_memory_sprom_inst (
.ena(rom_enable), // 1-bit input: Memory enable signal for port A. Must be high on clock .ena(rom_enable), // 1-bit input: Memory enable signal for port A. Must be high on clock
// cycles when read operations are initiated. Pipelined internally. // cycles when read operations are initiated. Pipelined internally.
.rsta(reset) // 1-bit input: Reset signal for the final port A output register stage. .rsta(reset), // 1-bit input: Reset signal for the final port A output register stage.
// Synchronously resets output port douta to the value specified by // Synchronously resets output port douta to the value specified by
// parameter READ_RESET_VALUE_A. // parameter READ_RESET_VALUE_A.
// These are required I think? The ROM gets optimized out without them
.sleep(0),
// Should this have a separate control signal? What happens if it gets
// turned on early like I'm doing now?
.regcea(rom_enable),
.injectsbiterra(0),
.injectdbiterra(0)
); );
// End of xpm_memory_sprom_inst instantiation // End of xpm_memory_sprom_inst instantiation
assign buffer_half = buffer.addra[10];
// The audio buffer memory is clocked at the same speed as this module
assign buffer.clka = clk;
//next state logic //next state logic
always_comb always_comb
begin begin
case (current) case (current)
RESET: if (reset) next = RESET; RESET: if (reset) next = RESET;
else next = DELAY; else next = DELAY1;
DELAY1: next = DELAY2;
DELAY2: next = DELAY3;
DELAY3: next = WRITEBUF;
DELAY: next = WRITEBUF; WRITEBUF: if (buffer.addra[9:0] < 1020) next = WRITEBUF;
else next = ENDWRITE1;
WRITEBUF: if (buffer.addra < 1023) next = WRITEBUF; ENDWRITE1: next = ENDWRITE2;
else if (buffer.addra == 1023) next = ENDWRITE; ENDWRITE2: next = ENDWRITE3;
ENDWRITE3: next = WAIT;
ENDWRITE: next = WAIT;
WAIT: if (buffer_half == buffer.address_half) next = WAIT; WAIT: if (buffer_half == buffer.address_half) next = WAIT;
else next = DELAY; else next = DELAY1;
default: next = RESET; default: next = RESET;
endcase endcase
end end
//sequential output logic //sequential output logic
always_ff @(posedge clock) always_ff @(posedge clk)
begin begin
case (current) case (current)
RESET: begin RESET: begin
buffer_half <= 0;
rom_addr <= 0; rom_addr <= 0;
rom_enable <= 1; rom_enable <= 1;
buffer.addra <= 0; buffer.addra <= 0;
buffer.ena <= 0;
ready <= 0; ready <= 0;
end end
DELAY: rom_addr <= rom_addr + 1; DELAY1: rom_addr <= rom_addr + 1;
DELAY2: rom_addr <= rom_addr + 1;
DELAY3: begin
rom_addr <= rom_addr + 1;
buffer.dina <= rom_data;
buffer.ena <= 1;
end
WRITEBUF: begin WRITEBUF: begin
buffer.ena <= 1; buffer.ena <= 1;
@ -110,29 +131,37 @@ begin
buffer.addra <= buffer.addra + 1; buffer.addra <= buffer.addra + 1;
rom_addr <= rom_addr + 1; rom_addr <= rom_addr + 1;
end end
ENDWRITE: begin ENDWRITE1, ENDWRITE2:
begin
buffer.ena <= 1; buffer.ena <= 1;
buffer.data <= rom_data; buffer.dina <= rom_data;
buffer.addra <= buffer.addra + 1;
end
ENDWRITE3: begin
buffer.ena <= 0;
buffer.dina <= rom_data;
buffer.addra <= buffer.addra + 1; buffer.addra <= buffer.addra + 1;
ready <= 1; ready <= 1;
end end
WAIT: buffer.ena <= 0; WAIT: ;
default: begin default: begin
buffer_half <= 0;
rom_addr <= 0; rom_addr <= 0;
rom_enable <= 0; rom_enable <= 0;
buffer.addra <= 0; buffer.addra <= 0;
buffer.dina <= 0; buffer.dina <= 0;
buffer.ena <= 0;
ready <= 0; ready <= 0;
end end
endcase endcase
end end
//sequential clocking block //sequential clocking block
always_ff @(posedge clock) always_ff @(posedge clk)
begin begin
if (reset) if (reset)
current <= RESET; current <= RESET;

14
doc/bugs.md
View File

@ -12,3 +12,17 @@
### Low Freq Clock Gen ### Low Freq Clock Gen
- Was initially trying to do modulo at max clock speed, failing timing - Was initially trying to do modulo at max clock speed, failing timing
### sd_rom
- ROM was getting totally optimized out and was doing nothing in simulation, and
didn't show up in synthesized design
- Timing issues, ROM was one cycle slower than expected, latching takes an extra
cycle too, had to rework state machines, there are a bonus 2 delay states when
starting and ending writes
### PWM
- major design problems
- clocked too slow
- initial goal of 16-bit audio isn't feasible because 100MHz isn't fast enough
to pwm based on a 16-bit counter, would give a sample rate of 1.5khz

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roms/gen_consecutive.py Normal file
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for i in range(1,256):
print(hex(i))
for i in range(0,10):
for i in range(0,256):
print(hex(i))

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/*****
* pwm_tb.sv - testbench for the pwm.sv module.
*
* @author: Dilanthi Prentice, Waylon Cude
* @date: 6/12/2025
* */
module pwm_tb;
bit clk, reset;
logic load;
wire pwm_pin;
logic [15:0] sample;
pwm dut (.*);
initial forever #10 clk = ~clk;
initial begin
reset = 1;
@(posedge clk);
@(posedge clk);
reset = 0;
load = 1;
sample = 0;
for (int i=0; i < (1<<16)-1; i++) begin
@(posedge clk) assert (pwm_pin === 0)
else $error("Should be low at %d",i);
end
reset = 0;
load = 1;
sample = '1;
@(posedge clk)
for (int i=0; i < (1<<16)-1; i++) begin
@(posedge clk) assert (pwm_pin === 'z)
else $error("Should be high at %d",i);
end
reset = 0;
load = 1;
// Should be about half on
sample = 1<<15;
@(posedge clk)
for (int i=0; i < (1<<15); i++) begin
@(posedge clk) assert (pwm_pin === 'z)
else $error("Should be high at %d",i);
end
sample = 1<<15;
for (int i = (1 << 15); i < (1<<16)-1; i++) begin
@(posedge clk) assert (pwm_pin === 0)
else $error("Should be low at %d",i);
end
$finish;
end
endmodule

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verification/audio/pwn_tb.sv
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/*****
* pwn_tb.sv - testbench for the pwn.sv module.
*
* @author: Dilanthi Prentice, Waylon Cude
* @date: 6/12/2025
* */

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`ifdef VERILATOR
`include "sdvd_defs.sv"
`endif
module rom_sd_tb;
bit clk,reset;
wire ready;
int errors;
logic [10:0] i;
audio_buffer_interface buffer();
rom_sd #("consecutive.mem") dut (clk,reset,ready,buffer.driver);
initial forever #10 clk = ~clk;
initial begin
reset = 1;
buffer.address_half = 0;
@(posedge clk);
reset = 0;
// Audio data should not be flowing yet
#1 assert (buffer.dina == 0)
else begin
errors++;
$error("Data not zero after reset, found 0x%x",buffer.dina);
end
repeat (3) @(posedge clk);
for (i = 0; i < 1024;) begin
@(posedge clk);
#1
assert (buffer.addra === i)
else begin
errors++;
$error("Incorrect address, expected %x found %x",i,buffer.addra);
end
assert (buffer.dina === ((i + 1) % 256))
else begin
errors++;
$error("Incorrect data, expected 0x%x but found 0x%x",i[7:0],buffer.dina);
end
assert (i == 0 || buffer.ena === 1)
else begin
$error("Enable not high");
errors++;
end
assert (buffer.address_half == 0)
else begin
errors++;
$error("Incorrect address half, expected 0 but found %d",buffer.address_half);
end
i = i + 1;
end
// Wait a cycle for the buffer to catch up
@(posedge clk);
// Make sure that we start waiting and that we signal that the buffer
// is ready
#1 assert(buffer.ena === 0)
else begin
errors++;
$error("Buffer did not wait after first full cycle");
end
assert(ready === 1)
else begin
errors++;
$error("Buffer did not signal ready");
end
assert(dut.buffer_half === 1)
else begin
errors++;
$error("Buffer half did not correctly change to 1");
end
// Set the address half high so we can test waiting/catching up to the
// buffer
buffer.address_half = 1;
repeat (100) @(posedge clk);
#1 assert(buffer.ena === 0)
else begin
errors++;
$error("Buffer did not wait after first full cycle");
end
buffer.address_half = 0;
repeat (3) @(posedge clk);
// Check that sending into the upper half of the buffer works as
// expected
while (i != 0) begin
@(posedge clk);
#1
assert (buffer.addra === i)
else begin
errors++;
$error("Incorrect address, expected %x found %x",i,buffer.addra);
end
assert (buffer.dina === ((i + 1) % 256))
else begin
errors++;
$error("Incorrect data, expected 0x%x but found 0x%x",i[7:0],buffer.dina);
end
assert (i == 0 || buffer.ena === 1)
else begin
$error("Enable not high");
errors++;
end
assert (buffer.address_half == 0)
else begin
errors++;
$error("Incorrect address half, expected 0 but found %d",buffer.address_half);
end
i = i + 1;
end
// Wait a cycle for the buffer to catch up
@(posedge clk);
// Make sure that we start waiting
#1 assert(buffer.ena === 0)
else begin
errors++;
$error("Buffer did not wait after second full cycle");
end
assert(ready === 1)
else begin
errors++;
$error("Buffer did not signal ready");
end
assert(dut.buffer_half === 0)
else begin
errors++;
$error("Buffer half did not correctly change to 0");
end
$display("Found %0d errors while testing rom_sd",errors);
$finish;
end
endmodule

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<?xml version="1.0" encoding="UTF-8"?>
<wave_config>
<wave_state>
</wave_state>
<db_ref_list>
<db_ref path="rom_sd_tb_behav.wdb" id="1">
<top_modules>
<top_module name="glbl" />
<top_module name="rom_sd_tb" />
</top_modules>
</db_ref>
</db_ref_list>
<zoom_setting>
<ZoomStartTime time="0.000 ns"></ZoomStartTime>
<ZoomEndTime time="143.201 ns"></ZoomEndTime>
<Cursor1Time time="0.000 ns"></Cursor1Time>
</zoom_setting>
<column_width_setting>
<NameColumnWidth column_width="453"></NameColumnWidth>
<ValueColumnWidth column_width="200"></ValueColumnWidth>
</column_width_setting>
<WVObjectSize size="10" />
<wvobject type="logic" fp_name="/rom_sd_tb/clk">
<obj_property name="ElementShortName">clk</obj_property>
<obj_property name="ObjectShortName">clk</obj_property>
</wvobject>
<wvobject type="logic" fp_name="/rom_sd_tb/reset">
<obj_property name="ElementShortName">reset</obj_property>
<obj_property name="ObjectShortName">reset</obj_property>
</wvobject>
<wvobject type="logic" fp_name="/rom_sd_tb/ready">
<obj_property name="ElementShortName">ready</obj_property>
<obj_property name="ObjectShortName">ready</obj_property>
</wvobject>
<wvobject type="array" fp_name="/rom_sd_tb/dut/rom_data">
<obj_property name="ElementShortName">rom_data[7:0]</obj_property>
<obj_property name="ObjectShortName">rom_data[7:0]</obj_property>
</wvobject>
<wvobject type="array" fp_name="/rom_sd_tb/dut/current">
<obj_property name="ElementShortName">current[2:0]</obj_property>
<obj_property name="ObjectShortName">current[2:0]</obj_property>
</wvobject>
<wvobject type="array" fp_name="/rom_sd_tb/dut/rom_addr">
<obj_property name="ElementShortName">rom_addr[16:0]</obj_property>
<obj_property name="ObjectShortName">rom_addr[16:0]</obj_property>
</wvobject>
<wvobject type="logic" fp_name="/rom_sd_tb/dut/rom_enable">
<obj_property name="ElementShortName">rom_enable</obj_property>
<obj_property name="ObjectShortName">rom_enable</obj_property>
</wvobject>
<wvobject type="array" fp_name="/rom_sd_tb/buffer/addra">
<obj_property name="ElementShortName">addra[10:0]</obj_property>
<obj_property name="ObjectShortName">addra[10:0]</obj_property>
</wvobject>
<wvobject type="array" fp_name="/rom_sd_tb/buffer/dina">
<obj_property name="ElementShortName">dina[7:0]</obj_property>
<obj_property name="ObjectShortName">dina[7:0]</obj_property>
</wvobject>
<wvobject type="logic" fp_name="/rom_sd_tb/buffer/ena">
<obj_property name="ElementShortName">ena</obj_property>
<obj_property name="ObjectShortName">ena</obj_property>
</wvobject>
</wave_config>