Please write VHDL code for this:

Subject: three-tone siren generation Description: You are assigned to generate a three-tone siren, which alternates among three frequencies: 220-Hz, 440-Hz, and 880-Hz with each tone lasting for half of a second. The on-board 50- MHz clock should be used to derive the three tones. The pin 1 (or any other pin) on JP1 (or JP2) should be chosen as the waveform output. Use a cable to connect this waveform output to a speaker to make the sound. Subject: three-tone siren generation Description: You are assigned to generate a three-tone siren, which alternates among three frequencies: 220-Hz, 440-Hz, and 880-Hz with each tone lasting for half of a second. The on-board 50- MHz clock should be used to derive the three tones. The pin 1 (or any other pin) on JP1 (or JP2) should be chosen as the waveform output. Use a cable to connect this waveform output to a speaker to make the sound