Build Your Own Arcade Controls Forum

Software Support => GroovyMAME => Topic started by: outrunner on August 25, 2013, 10:44:41 am

Title: How to change horizontal geometry
Post by: outrunner on August 25, 2013, 10:44:41 am: Hi,

I've been successfully using groovymame with a SCART TV for a few months :applaud: but would love to work out how to alter the H geometry so that the image isn't so over scanned on my TV.

I've read through some very complex post on this forum but can't work out exactly what I need to change in mame.ini

So far I've opened arcade osd for 384 x 240 at 60hz and by changing H front porch from 2 (2.033) to 3 (3.002) the image is placed perfectly. I assume the next step is to reflect this in a monitor spec_line?

At the moment my mame.ini has CRT_range0 to 9 all set to Auto, should I replace one of the Autos with a spec line and how do I know what spec to use?

Thanks in advance.
Title: Re: How to change horizontal geometry
Post by: Calamity on August 25, 2013, 11:15:02 am: What monitor preset are you currently using in mame.ini?
Title: Re: How to change horizontal geometry
Post by: outrunner on August 25, 2013, 03:35:11 pm: Hi Calamity, I was hoping you'd reply :)

The mame.ini has what I assume is the default preset of generic_15
Title: Re: How to change horizontal geometry
Post by: Calamity on August 25, 2013, 04:09:15 pm: Hi outrunner,

Try the following, in mame.ini

monitor custom
crt_range0 15625-15750, 49.50-65.00, 3.002, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576
Title: Re: How to change horizontal geometry
Post by: outrunner on August 25, 2013, 05:49:17 pm: Yep that did the trick :applaud:

Thanks for the support Calamity - think it's about time I made a donation. If it's not too much bother please can you post the link to donate, can't remember where to find it?
Title: Re: How to change horizontal geometry
Post by: Calamity on August 27, 2013, 02:47:51 pm: Hi outrunner,

I'm glad that it worked. There are donation links in https://code.google.com/p/groovyarcade/