In this demonstration we show how to implement an SD Card Music Player on the DE2 board, in which the music files are stored in an SD card and the board can play the music files via its CD-quality audio DAC circuits. We use the Nios II processor to read the music data stored in the SD Card and use the Wolfson WM8731 audio CODEC to play the music.

DE2_SD_Card_Audio\.qsys_edit\filters.xml
.................\..........\preferences.xml
.................\.sopc_builder\filters.xml
.................\.............\install.ptf
.................\.............\install2.ptf
.................\.............\preferences.xml
.................\altpllpll_0.ppf
.................\Audio.v
.................\Audio_0.v
.................\......DAC_FIFO\AUDIO_DAC_FIFO_hw.tcl
.................\..............\cb_generator.pl
.................\..............\class.ptf
.................\..............\hdl\AUDIO_DAC_FIFO.v
.................\..............\...\FIFO_16_256.v
.................\AUDIO_DAC_FIFO.v
.................\Audio_PLL.ppf
.................\Audio_PLL.v
.................\bht_ram.mif
.................\Binary_VGA_Controller\cb_generator.pl
.................\.....................\class.ptf
.................\.....................\hdl\Img_DATA.hex
.................\.....................\...\Img_RAM.v
.................\.....................\...\VGA_Controller.v
.................\.....................\...\VGA_NIOS_CTRL.v
.................\.....................\...\VGA_OSD_RAM.v
.................\.....................\...\VGA_Param.h
.................\.....................\inc\VGA.c
.................\.....................\...\VGA.h
.................\.....................\VGA_NIOS_CTRL_hw.tcl
.................\button_pio.v
.................\clock_0.v
.................\clock_1.v
.................\cmp_state.ini
.................\cpu_0.ocp
.................\cpu_0.sdc
.................\cpu_0.v
.................\cpu_0.vo
.................\cpu_0_bht_ram.mif
.................\cpu_0_dc_tag_ram.mif
.................\cpu_0_ic_tag_ram.mif
.................\cpu_0_jtag_debug_module.v
.................\cpu_0_jtag_debug_module_sysclk.v
.................\cpu_0_jtag_debug_module_tck.v
.................\cpu_0_jtag_debug_module_wrapper.v
.................\cpu_0_mult_cell.v
.................\cpu_0_ociram_default_contents.mif
.................\cpu_0_oci_test_bench.v
.................\cpu_0_rf_ram_a.mif
.................\cpu_0_rf_ram_b.mif
.................\cpu_0_test_bench.v
.................\db\add_sub_8ri.tdf
.................\..\altsyncram_1g22.tdf
.................\..\altsyncram_3p61.tdf
.................\..\altsyncram_87f1.tdf
.................\..\altsyncram_8pf1.tdf
.................\..\altsyncram_97f1.tdf
.................\..\altsyncram_9tl1.tdf
.................\..\altsyncram_a422.tdf
.................\..\altsyncram_ad41.tdf
.................\..\altsyncram_c572.tdf
.................\..\altsyncram_d5g1.tdf
.................\..\altsyncram_e502.tdf
.................\..\altsyncram_fve1.tdf
.................\..\altsyncram_p132.tdf
.................\..\altsyncram_q7o1.tdf
.................\..\altsyncram_qed1.tdf
.................\..\alt_synch_pipe_jcb.tdf
.................\..\alt_synch_pipe_nc8.tdf
.................\..\a_dpfifo_8t21.tdf
.................\..\a_fefifo_7cf.tdf
.................\..\a_graycounter_6fc.tdf
.................\..\a_graycounter_7fc.tdf
.................\..\a_graycounter_g86.tdf
.................\..\cmpr_t16.tdf
.................\..\cntr_fjb.tdf
.................\..\cntr_rj7.tdf
.................\..\dcfifo_c0i1.tdf
.................\..\DE2_SD_Card_Audio.autoh_e4eb1.map.reg_db.cdb
.................\..\DE2_SD_Card_Audio.cbx.xml
.................\..\DE2_SD_Card_Audio.cmp.rdb
.................\..\DE2_SD_Card_Audio.cmp_merge.kpt
.................\..\DE2_SD_Card_Audio.db_info
.................\..\DE2_SD_Card_Audio.hier_info
.................\..\DE2_SD_Card_Audio.hif
.................\..\DE2_SD_Card_Audio.lpc.html
.................\..\DE2_SD_Card_Audio.lpc.rdb
.................\..\DE2_SD_Card_Audio.lpc.txt
.................\..\DE2_SD_Card_Audio.map.kpt
.................\..\DE2_SD_Card_Audio.map.qmsg
.................\..\DE2_SD_Card_Audio.map.rdb
.................\..\DE2_SD_Card_Audio.map_bb.hdb
.................\..\DE2_SD_Card_Audio.pre_map.cdb
.................\..\DE2_SD_Card_Audio.pre_map.hdb
.................\..\DE2_SD_Card_Audio.rom0_I2C_AV_Config_fe53227f.hdl.mif
.................\..

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