2 x Refresh Speed

Discuss NSF files, FamiTracker, MML tools, or anything else related to NES music.
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neilbaldwin
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2 x Refresh Speed

Post by neilbaldwin »

I really want to change the refresh speed of Nijuu to 120hz. Has anyone done it with their sound engine and what's best practice (i.e. I know calling the refresh routine twice in the NMI is NOT the way to go :) )
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thefox
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Post by thefox »

Probably the best way to go would be sprite#0 hit. Can't think of anything else that would work on stock configuration without mapper supporting IRQs.

In NSF files you can simply edit the playback speed in the header.
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Bregalad
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Post by Bregalad »

Yeah I've been thinking about it a few times but I cam with no practical solution. NSF's can change refresh speed in the $80 byte header, but I don't know how many NSF players actually takes care of this byte, I suspect that many ignore it and are hardwired to 60Hz.

And without a mapper with IRQs availalbe, only choise left is Frame IRQ (which also happens at 60Hz so it's not of much use) or DMC IRQ, which is without a doubt the best option, if you don't use DMC for music of course.
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neilbaldwin
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Post by neilbaldwin »

thefox wrote:In NSF files you can simply edit the playback speed in the header.
Bregalad wrote:NSF's can change refresh speed in the $80 byte header,
/facepalm

Of course!
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B00daW
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Post by B00daW »

Neil,

Only PowerPak NSF player and NSFplug or NSFplay pay attention to refresh rate, as far as I know.

I've created a few 120Hz NSFs and I'm working on one at the moment.

(P.S. -- Otherwise swamped and still looking at Nijuu slowly.)
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neilbaldwin
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Post by neilbaldwin »

B00daW wrote:Neil,

Only PowerPak NSF player and NSFplug or NSFplay pay attention to refresh rate, as far as I know.

I've created a few 120Hz NSFs and I'm working on one at the moment.

(P.S. -- Otherwise swamped and still looking at Nijuu slowly.)
Add "Game Music Box" to that list - it seems to cope with arbitrary refresh rates too.
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