Use quartus6.0 write music playing hardware circuit (option not that software, so here annotated) through the keys to achieve simple music playback through the buzzer. Detailed pin definitions are not a lot to say here, the choice of different chips, pin lock is different, here with a chip EP2C6Q240C8

9.1__乐曲硬件演奏电路设计
.........................\cmp_state.ini
.........................\data1.mif
.........................\db
.........................\..\altsyncram_pi51.tdf
.........................\..\altsyncram_vaj2.tdf
.........................\..\decode_ogi.tdf
.........................\..\SONGER.asm.qmsg
.........................\..\SONGER.cbx.xml
.........................\..\SONGER.cmp.cdb
.........................\..\SONGER.cmp.hdb
.........................\..\SONGER.cmp.kpt
.........................\..\SONGER.cmp.logdb
.........................\..\SONGER.cmp.rdb
.........................\..\SONGER.cmp.tdb
.........................\..\SONGER.cmp0.ddb
.........................\..\SONGER.dbp
.........................\..\SONGER.db_info
.........................\..\SONGER.eco.cdb
.........................\..\SONGER.fit.qmsg
.........................\..\SONGER.hier_info
.........................\..\SONGER.hif
.........................\..\SONGER.map.cdb
.........................\..\SONGER.map.hdb
.........................\..\SONGER.map.logdb
.........................\..\SONGER.map.qmsg
.........................\..\SONGER.pre_map.cdb
.........................\..\SONGER.pre_map.hdb
.........................\..\SONGER.psp
.........................\..\SONGER.pss
.........................\..\SONGER.rtlv.hdb
.........................\..\SONGER.rtlv_sg.cdb
.........................\..\SONGER.rtlv_sg_swap.cdb
.........................\..\SONGER.sgdiff.cdb
.........................\..\SONGER.sgdiff.hdb
.........................\..\SONGER.signalprobe.cdb
.........................\..\SONGER.sld_design_entry.sci
.........................\..\SONGER.sld_design_entry_dsc.sci
.........................\..\SONGER.syn_hier_info
.........................\..\SONGER.tan.qmsg
.........................\music.vhd
.........................\notetabs.vhd
.........................\SONGER.asm.rpt
.........................\SONGER.cdf
.........................\SONGER.done
.........................\SONGER.fit.eqn
.........................\SONGER.fit.rpt
.........................\SONGER.fit.smsg
.........................\SONGER.fit.summary
.........................\SONGER.flow.rpt
.........................\SONGER.map.eqn
.........................\SONGER.map.rpt
.........................\SONGER.map.summary
.........................\SONGER.pin
.........................\SONGER.pof
.........................\SONGER.qpf
.........................\SONGER.qsf
.........................\SONGER.qws
.........................\SONGER.sof
.........................\SONGER.tan.rpt
.........................\SONGER.tan.summary
.........................\SONGER.vhd
.........................\SONGER_assignment_defaults.qdf
.........................\speakera.vhd
.........................\tonetaba.vhd

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