Wiki editing discussion

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By gdx

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20-05-2021, 11:17

The category V9990 for example.

By mars2000you

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20-05-2021, 11:20

I think it's the only one for the VDPs at least at the moment. No need to create categories for the other VDP's.

By mars2000you

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20-05-2021, 12:08

Another problem: you give almost the same list of compatible PSG chips on the PSG page and on the General Instrument AY-3-8910 page.

As the PSG page is now a category, I think the list should be only on the General Instrument AY-3-8910 page, but as you have created all these PSG pages, I prefer that you make the change yourself.

By gdx

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20-05-2021, 12:17

It's not a problem.

By mars2000you

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20-05-2021, 12:22

Why? Your answer does not help me to understand.

By gdx

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20-05-2021, 12:28

PSG is not necessarily an AY-3-8910 compatible chip (physically).

By mars2000you

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20-05-2021, 12:37

I see ... it's the problem we have with the PSG chip used in the Spectravideo SVI-838 (only 28 pins)

By Grauw

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20-05-2021, 13:22

A V9938 category could include the Neos MA-20 and a V9958 category could include the MA-20 clone produced designed by l_oliveira and by fzanoto perhaps?

About a “PSG” (SSG?) category, I think in addition to pin compatibility, the Yamaha YM2149 and Microchip AY8930 versions are also relevant, as well as the ones built into the MSX-ENGINE and MSX-SYSTEM ASICs.

By mars2000you

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20-05-2021, 13:49

Grauw wrote:

A V9938 category could include the Neos MA-20 and a V9958 category could include the MA-20 clone produced designed by l_oliveira and by fzanoto perhaps?

Seems me good. I think there is not yet a page about the MA-20 clone....

By gdx

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20-05-2021, 14:25

It is a bad idea to make a MA-20 clone with a V9958 since the majority of MSX2+ games (all?) do direct access to VDP.

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