8 & 16 MHz versions

These versions has more simple noise generator and may loose interrupts but sounds very good.
Use it in some circuits where it needed

It's just for fun, not for ZX-Spectrum

Uploading 8MHz version using internal oscillator:

	avrdude -b 19200 -p atmega8 -c USBasp -U flash:w:emul8mhz.hex -U lfuse:w:0x24:m -U hfuse:w:0xc5:m