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Vas Crabb
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Reged: 12/13/05
Posts: 4466
Loc: Melbourne, Australia
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Re: 76477 Sound Chip
05/25/18 05:16 PM
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> Here is an interesting article on the 76477 sound chip (used in Space Invaders). The
> author mentions (footnote 7) that there may be a slight error in MAME's 76477 code.
> Can anyone verify?

MAME's 76477 code is grossly inadequate for how it's used in a number of systems. For example Laser Battle uses it with the output amplifier open loop, using that to gate/distort the output from organ synth chips. I'm not too worried about slight errors when the whole thing needs a rework to be honest.






Entire thread
Subject Posted by Posted on
* 76477 Sound Chip Comboman 05/25/18 04:57 PM
. * Re: 76477 Sound Chip Vas Crabb  05/25/18 05:16 PM
. * Re: 76477 Sound Chip gregf  05/25/18 08:22 PM

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