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Roman
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Reged: 09/21/03
Posts: 1583
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Reverse engineering the 76477 "Space Invaders" sound effect chip from die photos
#365589 - 05/01/17 10:46 AM
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dont know if it is already known here...but definetly worth reading...
http://www.righto.com/2017/04/reverse-engineering-76477-space.html



agard
MAME Fan
Reged: 08/04/13
Posts: 328
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Re: Reverse engineering the 76477 "Space Invaders" sound effect chip from die photos new [Re: Roman]
#365593 - 05/01/17 12:20 PM
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Another great read into how some sound chips work. I'd love to see some video's on how some important stuff was actually figured out. Thanks



Vas Crabb
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Reged: 12/13/05
Posts: 4453
Loc: Melbourne, Australia
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Re: Reverse engineering the 76477 "Space Invaders" sound effect chip from die photos new [Re: Roman]
#365594 - 05/01/17 12:24 PM
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*sigh* that's a chip that badly needs a netlist-friendly implementation in MAME for things that use it with the output open-loop and stuff.


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