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Old 16 August 2016, 19:53   #9
pandy71
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Join Date: Jun 2010
Location: PL
Posts: 1,546
Quote:
Originally Posted by Mrs Beanbag View Post
ok so someone plugged his Amiga's composite out signal into an amp and played samples over it by drawing on the screen

http://jmp.no/blog/a-5th-audio-channel-on-the-amiga

I have better hack for you - use 4 bit TTL output from video port in same way as DCTV or HAM-E or similar.
Code PCM on video then collect data - you can realtively easy output 16 bit stereo PCM 48kHz even on naked A500 in such way - this can be done with simple state machine on few TTL circuits, on hires line (640 pixels) 320 bytes can be coded so single line can cary 16000 bytes per second to feed 48000 16 bit stereo you need 12 hires lines - this area can be masked in TTL logic to avoid visible garbage...
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