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Dream Theater - In The Presence of Enemies intro on FPGA

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Uploaded by on Dec 29, 2007

The intro of Dream Theater's song 'In The Presence of Enemies' played by a homebrew monotonic synthesizer and sequencer on a Xilinx Spartan-3E FPGA.

More information at http://www.pretopia.net

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  • The design doesn't use any software interrupts (no software at all for that matter). A custom sequencer (a simple clock divider) generates pulses for the synthesizer. A square wave signal with the corresponding frequency is presented at a regular IO pin indeed.

  • Do you use any GPIO+timer interrupt for that? Or is that a special output port?

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