MIDI MONSTER EDA385 Arvid Lindell Johan Wennersten Features MIDI - PowerPoint PPT Presentation

Nov 16, 2022 •231 likes •306 views

MIDI MONSTER EDA385 Arvid Lindell Johan Wennersten Features MIDI player with some sort of game attached (Guitar Hero/Bit Trip Runner-ish?) Square/triangle/etc waveform generator (DDS), attached to 8/16 MIDI channels Some sort of

MIDI MONSTER EDA385 Arvid Lindell Johan Wennersten
Features ● MIDI player with some sort of game attached (Guitar Hero/Bit Trip Runner-ish?) ● Square/triangle/etc waveform generator (DDS), attached to 8/16 MIDI channels ● Some sort of input (On-board pushbuttons/PS2/USB keyboard) ● VGA output (320x240, 4/8bpp, doublescan)
Initial hw/sw partitioning
DDS ● 44 kHz with waveforms of length 256 results in 10 samples for 4.1kHz (highest piano key frequency). ● If resources turn out to be unused at the end of the project, it will be trivial to increase the DDS frequency and sample length, for increased audio quality
Feasibility ● Problem: Lack of video memory bandwidth ● Solution: Reduce visible resolution/bpp
Feasibility (2) ● Problem (seems unlikely, but should be mentioned): Not enough slices/BRAM ● Solution: Use an area-optimized MicroBlaze, reduce the number of samples used for each waveform (currently 256), reduce number of MIDI channels, etc etc.

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