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gregf
Ramtek's Trivia promoter
Reged: 09/21/03
Posts: 8583
Loc: southern CA, US
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Re: 76477 Sound Chip
05/25/18 08:22 PM


>> 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.

The shoutbox comments [elsewhere] from a few days earlier towards MAME's src/drivers/8080bw.cpp source file would make tv show All in the Family character Archie Bunker proud.

https://www.youtube.com/watch?v=ALE6ENavvJQ









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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