Neo Geo CPU Overclocking?

Akuma
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Re: Neo Geo CPU Overclocking?

Unread post by Akuma »

Ahh... there we go :D

Koston
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Re: Neo Geo CPU Overclocking?

Unread post by Koston »

aberu wrote: Thu Oct 19, 2023 1:56 am

What needs to be fixed about it? The core meets timing requirements when I compile trbocode's latest version.

I don't think doubling the clock is anywhere near the equivalent of what Koston's mods to his own boards are though. The current build is like clocking the board to 24MHz which is a bit excessive given 12MHz is the default.

In my tests, 18MHz is the highest CPU frequency a NeoGeo PCB can run Metal Slug games at. IIRC, the CPU is spec'd to run at up to 24MHz, so there's no heating or other potential problems usually associated with overclocking.

Overclocking reduces slowdown without adverse effects in all Metal Slug series games, MS2 is just the one getting most benefit since original is simply unplayable.

MrsBison
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Re: Neo Geo CPU Overclocking?

Unread post by MrsBison »

Hey

I placed the patched oc 24 MHz rbf in the folder console.
How do i select this core please ?

Edit: Working. Wow MS 2 runs so good now.
Just some slowdowns but really great to play.

Can we have a similar fix for Last Resort and Blazing Star?
:D

Thanx

im afraid your path ends here ... Jago

Theenemy
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Re: Neo Geo CPU Overclocking?

Unread post by Theenemy »

now we have cd support in the main core and probably some other changes, is it possible to get an updated 18mhz and 24mhz patched version?

Atohmdiy
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Re: Neo Geo CPU Overclocking?

Unread post by Atohmdiy »

Theenemy wrote: Wed Nov 29, 2023 11:21 am

now we have cd support in the main core and probably some other changes, is it possible to get an updated 18mhz and 24mhz patched version?

I wanted to come here to ask the same, as i stated the old version now crash.

MrsBison
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Re: Neo Geo CPU Overclocking?

Unread post by MrsBison »

There are lots of games which would have a big benefit for a separate single core update.
If i compare most of shmups running in the Neo Burn Alpha... i think there is room for improvement ... BUT

I dont think they wanna built 156 single cores ...

So maybe someday will be a modified core for most games but compared to Neo Burn Alpha the games which runs perfect on
Mister runs almost like on real hardware. Thats the biggest benefit for gaming an a flawless hardware :)

kind regards

im afraid your path ends here ... Jago

MrsBison
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Re: Neo Geo CPU Overclocking?

Unread post by MrsBison »

Just some thoughs....

Well most of us tried these special OC Core for Metal Slug and it really worked great. Even on Part 2....
Is it possible to create a similar version for Viewpoint, Last Resort and Twinkle Start Spites ?

I think especially these shmups would be so awesome without slowdowns...
( I know that most slowdowns are exaclty like on the real hardware )

Cheers

im afraid your path ends here ... Jago

Lloyd2084
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Re: Neo Geo CPU Overclocking?

Unread post by Lloyd2084 »

Shocktroopers 2 would benefit hugely from overclocking. Great game but it becomes a slideshow in 2p modes

MrsBison
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Re: Neo Geo CPU Overclocking?

Unread post by MrsBison »

Today i tried Shock Troopers... For me its no playable with stock CPU.
I tried the OC 24mHz but this causes big grafik glitches.
Is there a way to play both games smooth ?

Kind regards

im afraid your path ends here ... Jago

MrsBison
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Re: Neo Geo CPU Overclocking?

Unread post by MrsBison »

Hi there

today ive played MS 1 with the overcloked core. Runs superb but after hitting the buttons for entering the
softdip menu ( enable red blood and so on ) i got this issue.

1000017598.jpg
1000017598.jpg (2.88 MiB) Viewed 2730 times

im afraid your path ends here ... Jago

FPGA64
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Re: Neo Geo CPU Overclocking?

Unread post by FPGA64 »

Overclocked Neo Geo can suffer graphical corruption. The machine is not built to run that fast and so is unstable

MrsBison
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Re: Neo Geo CPU Overclocking?

Unread post by MrsBison »

If you dont hit that menu it runs perfect till the end... was just an accidentally trigger issue :)

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Phaedrus
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Re: Neo Geo CPU Overclocking?

Unread post by Phaedrus »

Cyril1980 wrote: Fri Sep 02, 2022 12:44 pm

Hi.

Here is the 24MHz patched neo-geo core up to date.

Any chance of getting an updated version that works with the recent neo geo cd core?

This version loads the core, but doesn't actually let you load roms.

Theenemy
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Re: Neo Geo CPU Overclocking?

Unread post by Theenemy »

Correct .. just an overclocked version of latest core would be great

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