12 lines
		
	
	
		
			430 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
		
		
			
		
	
	
			12 lines
		
	
	
		
			430 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
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								# Commodore PET
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								a computer from 1977 which was leader on US schools back then. subsequently the Apple II took its throne.
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								maybe no better than a computer terminal, but somebody discovered a way to update the screen at turbo rate - and eventually its sound "chip" (it was nothing more than an 8-bit shift register) was abused as well.
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								some of these didn't even have sound...
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								# effects
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								- 10xx: set waveform. `xx` is a bitmask.
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