therodridie
Posts: 6
Joined: Sat Jun 23, 2018 3:41 am

NEOGEO driver frequency

Sun Jun 24, 2018 2:48 am

Why drivers like neogeo cps1 cps2 have frequency below 60HZ?
This is a bad thing, because the games do not have a smooth scroll ... example: the neogeo in the current mame has its frequency at 59.18HZ, but the correct would be 60HZ!

kirishima
Posts: 9
Joined: Thu Nov 30, 2017 11:04 pm

Re: NEOGEO driver frequency

Tue Jun 26, 2018 1:23 am

Those games used monitors back in the day that were capable of those frequencies. Anyways, several games that say 60hz aren't actually 60hz iirc, and I think I heard monitors these days aren't really 60hz as well using a refresh rate that just gets rounded up to 60.

therodridie
Posts: 6
Joined: Sat Jun 23, 2018 3:41 am

Re: NEOGEO driver frequency

Tue Jun 26, 2018 2:11 am

The problem of mame current is that because the frequencies of most games are below 60hz, they do not flow smoothly ... example of this is the neogeo driver that has a frequency of 59.18hz, the games choke slightly, because there is no synchrony with monitors 60hz.

The old mame up to version 0.100 for neogeo and 0.112 for cps1 and cps2 were all in 60hz, and flowed perfectly smooth without gagging!

My suggestion is that the developers of the mame add a choice of 60hz!
It does not cost anything to add this option.

kirishima
Posts: 9
Joined: Thu Nov 30, 2017 11:04 pm

Re: NEOGEO driver frequency

Tue Jun 26, 2018 7:08 am

They are not going to do that because that is not what those games were programmed for or how they're meant to be displayed in. If you want a smoother display, you have your choice of triple buffer, sync refresh, or wait vert sync. There's also something called g-sync with nvidia cards that should allow for display of different refresh rates without tearing. If you really to want have the games play at 60hz, enable cheats and set the refresh rate yourself in the sliders tab or compile your own version of mame.

therodridie
Posts: 6
Joined: Sat Jun 23, 2018 3:41 am

Re: NEOGEO driver frequency

Tue Jun 26, 2018 3:41 pm

Mame time has all the power in the hands, so do not do it because you do not want.

Sliders do not allow you to change the frequency accurately ... because it changes only the first 2 digits ... and also does not allow saving configuration.

So that mame time added this option in sliders, if it is not possible to change the frequency accurately, nor is it possible to save the configuration made?

Since it has an option in sliders, why not improve it adding precision in the choice of frequency and allowing to save the configuration in archive .CFG?

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Tafoid
Posts: 130
Joined: Thu Nov 06, 2014 12:50 pm
Location: Vermont USA
Contact: Website

Re: NEOGEO driver frequency

Tue Jun 26, 2018 5:29 pm

therodridie wrote:
Tue Jun 26, 2018 3:41 pm
Mame time has all the power in the hands, so do not do it because you do not want.

Sliders do not allow you to change the frequency accurately ... because it changes only the first 2 digits ... and also does not allow saving configuration.

So that mame time added this option in sliders, if it is not possible to change the frequency accurately, nor is it possible to save the configuration made?

Since it has an option in sliders, why not improve it adding precision in the choice of frequency and allowing to save the configuration in archive .CFG?
It would appear the only way to change to exactly 60Hz it is to adjust the source file(s) to assign the Hz to exactly what you want, then.
MAME is only concerned about proper refresh rates reflected in the pcb's raw parameters including pixel clock speed, vblank/Interrupt timers and other settings to accurately reflect the emulated Hz. Sadly, you'll get no help with it from the official forums.. perhaps a derivative build may be interested in helping.

therodridie
Posts: 6
Joined: Sat Jun 23, 2018 3:41 am

Re: NEOGEO driver frequency

Tue Jun 26, 2018 9:58 pm

The option already exists in sliders, so what the mame should do was allow the exact adjustment.

Example: in the current mame neogeo frequency is at 59.18hz, but it is only possible to adjust 59, and with that the frequency will be at 60.18hz

The correct would be an exact and complete adjustment, from 59.18 to 60hz, and could also be saved in .cfg or .ini

The option already exists, so it does not cost anything the mame time improves it.

Anyway, thanks for the answers.

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B2K24
Posts: 44
Joined: Wed Mar 30, 2016 5:43 am

Re: NEOGEO driver frequency

Thu Jun 28, 2018 7:34 pm

A G-Sync/FreeSync capable display will solve all of your issues.

therodridie
Posts: 6
Joined: Sat Jun 23, 2018 3:41 am

Re: NEOGEO driver frequency

Fri Jun 29, 2018 12:19 am

So tell me why in sliders it is only possible to change the first two digits of a frequency?

Why do not the mame developers allow us to change all frequencies in all number houses?

Example: in neogeo is 59.18hz, I can change the digits 59, but I can not change the 18 digits ... why not?

There is the option, so why not allow us to change the numbers completely?

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Robert
Posts: 65
Joined: Thu Nov 06, 2014 12:44 pm
Location: Land of Oz
Contact: Website

Re: NEOGEO driver frequency

Sat Jun 30, 2018 4:06 am

Hold down Shift and Ctrl, this allows 0.1 adjustments.

So you can get to 59.986 fps

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