Re: ***working*** modelines for xfree86 with official nvidia driver

If you've got a Geforce FX or newer nvidia card, then interlace modes will 
work perfectly.  So for quake (or your desktop) you could try something like 

lrmc 640 480 60 -i -cga 

as far as fracational stretching is concerned, the explanation is a little 
complicated.  Advancemame supports mixed and integer stretching (among 
others).  When you use fracational, lrmc calculates the best mode for a 
mixed setup, that is integer stretching of the horizontal resolution, and 
fractional stretching of the vertical resolution.  lrmc's default, however, 
is integer stretching, so if you want advancemame's mixed stretching just 
use the fractional stretch option. 

But here is where things gets tricky -- unlike arcadevga and advancemame, 
lrmc always maintains the correct aspect ratio on underscanned images when 
using integer stretching (or no stretching).  Images are never distorted.  
Take 224 line games on an arcadevga, there's a small border on the top and 
bottom of games, but no border on the right and left.  This is wrong.  The 
image is incorrectly displayed.  lrmc adjusts the modeline so that the 
aspect ratio is correct.  So the 7% border on 224 line games at the top and 
bottom is mirrored on both the right and left sides, that is, all the 
borders are equal, top = bottom = left = right. 

This makes the configuration in Advancemame complicated to say the least, 
because Advancemame won't select the correct mode if you're using lrmc's 
default.  You'll have to force the correct mode by using the -s option and 
copying the correct configuration to your advmame.rc file.  If you use 
fractional streching, then you don't have to do anything.  Advancemame will 
automatically select the correct mode. 

Hopefully this weekend I'll find the time to post a set of configuration 
files for Advancemame and X11.  Once I do, it'll all make sense.  Btw, I 
just uploaded a very minor bug fix release. 


As far as tweaking your modelines, there's xvidtune.  lrmc and xvidtune work 
together flawlessly, however, it's a far more cumbersome setup than 
advv.exe.  Copy, paste, reboot X, it's all very annoying, but for right now, 
it's all that works. 

[iso-8859-1] Jos� Renato writes: 

> Desmond, you are a genius. Now my arcade cabinet is working under Xfree 
> with nvidia official driver!
> this is great! I tried to put quake3 arena to work, but I didn´t get 
> fullscreen. Maybe I need some
> parameters. 
> 
> So, I have some questions to you. First, I generated some modelines for 
> neogeo games and cps2 games: 
> 
> 304x224x59hz and 320x224x59hz for neogeo
> 384x224x60hz for cps2 
> 
> So, for neogeo, I got a better screen. But for cps2, the screen was 
> compressed. So, I change the resize option
> to fraction and !eureka! it works. Even for mortal kombat.
> I put the hq effect too and the image become a little bit more beautifull. 
> It´s normal to set the resize option to
> fractional or there is a better solution? 
> 
> For Xfree config, I setup the xorg.conf  at the monitor specs and I added 
> the option Virtual 640x480.
> For my prefered resolution, I put this modeline: 
> 
> # 320x240x60.00 @ 15.750kHz
> Modeline "640x240x60.11"  12.096000  640 656 720 768  240 244 247 262 
> -HSync -VSync 
> 
> And I got a great image, but with virtual screen. It´s possible to have a 
> major resolution and screen without a virtual
> screen? 
> 
> I´s possible to center the screen via software or I need to center on my 
> arcade monitor? Some modelines have some screen cut. 
> 
> Thanks again for your great work. 
> 
> Keep mailing 
> 
> Gore Daimon  
> 
>  
> 
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