Can't edit 640x480 anymore?

[Endprodukt]

Little trouble after changing to a new monitor. Trisync, running desktop in 640x480p at 60hz added from mode list. Usually I would change to a different resolution and edit 640x480, but non of the values I change in arcade osd has any effect. I went into absurd numbers but nothing. I didn't edit the 30hz one and I know I can't edit the mode I use as current desktop.

Any help is appreciated


Olli

[buttersoft]

The mode or modes in the EDID can never be edited once it's in place. If you enable EDID emulation this means 640x480i (by default, anyway)

You can simply add a 640x480i mode manually (either when first setting up EDID, or later on by using vmm)

open vmm
type modelist import
type modelist list
(take a look at the formatting, and enter something like...)
type modelist add 640x480@60.000
type modelist list
(does everything look like before, only with 640x480@60 now?)
type modelist install

[Endprodukt]

Thank you for your reply but this is an additional 640x480@60hz from the super modelist. As mentioned I was able to edit this resolution in the past but now it refuses to accept any changes.

[Calamity]

Sometimes, Arcade OSD fails to determine the "correct" instance of 640x480 that's currently used by the desktop. So make sure you set your desktop to something that's different from ANY 640x480 mode before trying to edit.

That said, due to the special situation involving 640x480 as the most standard resolution of the universe, my common advice these days is to never use it on the desktop and always choose something different, preferably non-standard.

[Endprodukt]

But it was working so nicely in the past.

I switched to 1024x768 to edit the 640x480 and had no luck. I still need to edit 640x480 anyways to display the VGA games correctly. I have massive horizontal Overscan.

[Endprodukt]

Well instead of adjusting in arcade osd I went the route of making the modelines for my CRT actually fit. I still find it hard to understand how it all works, even after 10 years of using GM. Best way it works for me is to setup the resolutions in VMM first and then Mame seperately. Even if the modes are adjusted nice in VMM they are off for me in MAME with the same values, no idea what I'm doing wrong. However, I'm close to what I wanted to achive!

[Calamity]

Well instead of adjusting in arcade osd I went the route of making the modelines for my CRT actually fit.

That's the correct route. Just use arcade osd to get the good values for a single mode in each range, then generalize for all modes in the range through crt_ranges.

I still find it hard to understand how it all works, even after 10 years of using GM. Best way it works for me is to setup the resolutions in VMM first and then Mame seperately. Even if the modes are adjusted nice in VMM they are off for me in MAME with the same values, no idea what I'm doing wrong. However, I'm close to what I wanted to achive!

Make sure there's nothing obvious set wrong. Option monitor custom must be set both in VMM and mame.ini otherwise the crt_range lines are ignored. GM uses its own set of crt_range lines inside mame.ini which need to match the ones in VMM so they produce the same results.