Re: Re: Radeon 9200 and interlace

----- Original Message ----- 
From: "Martin Adrian" <adrianm-CWaTaxNTjqzV5dz/[email protected]>
To: <advancemame-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Sent: Monday, December 06, 2004 9:19 AM
Subject: [advancemame-users] Re: Radeon 9200 and interlace


>I did a quick look at the svgalib source and found that there is a flag
>that in the drivers that control if the vertical values should be halved
>for interlace modes (INTERLACE_DIVIDE_VERT).
>The INTERLACE_DIVIDE_VERT flag is set for all r128 & radeon boards.
>
>Based on the output (only first half of the lines is displayed) my guess
>is that the radeon9200 shouldn't have this flag set.
>
>I will compile a new advmame and test it tonight.
>
>Still doens't explain why advv says that interlace is not supported.
>

Did you ever get a chance to try this out? I looked at the source and 
noticed that the INTERLACE_DIVIDE_VERT flag only appears in the svgalib 
source directory - will changing it therefore affect my setup, which uses 
framebuffer graphics? If not, where would I implement a similar fix for the 
framebuffer?

Also, on my radeon setup, advv says (and has always said) that intrerlace 
*is* supported - it's just that in practice it is broken and only shows the 
top half of the screen twice!

Best Regards,

Jamie 



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