This is MP3 decoder for OpenRISC configured for the xess board.
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This is MP3 decoder for OpenRISC configured for the xess board.
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Make the mp3 player with:
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Make the mp3 player with:
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./makes2 songs/Beethoven-fuer_elise-16.mp3 songs/Moonlight-16.mp3
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./makes2 songs/Beethoven-fuer_elise-16.mp3 songs/Moonlight-16.mp3
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This should build mp3 decoder for or32 and also put these two
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This should build mp3 decoder for or32 and also put these two
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songs in the memory image.
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songs in the memory image.
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You get three outputs:
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You get three outputs:
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- minimad : this is executable in COFF binary format that you can use
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- minimad : this is executable in COFF binary format that you can use
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on the simulator (type "sim minimad", uncomment the OR1K_SIM define
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on the simulator (type "sim minimad", uncomment the OR1K_SIM define
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in config.h to get PCM output in a file audiosim.pcm, which you can hear
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in config.h to get PCM output in a file audiosim.pcm, which you can hear
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using command "play -t raw -r 22050 -s w -f s -c 2 audiosim.pcm")
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using command "play -t raw -r 22050 -s w -f s -c 2 audiosim.pcm")
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- minimad.s2 : this is srecord siutable to be merged with bitstream (*.exo)
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- minimad.s2 : this is srecord siutable to be merged with bitstream (*.exo)
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that is burned into flash memory in xess board
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that is burned into flash memory in xess board
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(type "../utils/merge2srec xfpga_top.exo minimad.s2" to get out.exo and then
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(type "../utils/merge2srec xfpga_top.exo minimad.s2" to get out.exo and then
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load this to xess board)
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load this to xess board)
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- minimad.mem : this file is used to initialize flash model for the RTL
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- minimad.mem : this file is used to initialize flash model for the RTL
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simulation (sim/ncsim/run/run_sim is expecting this file so you have to
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simulation (sim/ncsim/run/run_sim is expecting this file so you have to
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build this decoder before you run the simulation).
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build this decoder before you run the simulation).
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