GOTO Dreamy
GOTO80‘s chip theory blog is always entertaining, and he has written a rad overview on making 1-bit music on z-80 based systems. An excerpt:
Ok, the new thing is 1-bit music made with Z80! Just like with the AppleII-post before, this is me being an astonished newbie. It sounds so nice and data, I can’t believe it’s not a sound chip!
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So yesterday I found this and this, filled with mp3s of Z80-music made with the ZX Spectrum (or clones). This is how it works, according to Yerzmey: “Z80 chip produces all sounds and sends them into BEEPER and AUDIO-OUT connector of ZX SPECTRUM (jack) through ULA chip”. Normally you can play 1 channel square waves, but with the 3.5 MHz of this Z80 you can play samples and get up to 8 channels of sounds! So this is another example of chip music that does not only play sounds immanent inside sound chips, but uses the CPU to create a sort of softsynth.”