---------- Forwarded message ----------
From: Timothy Miller <[EMAIL PROTECTED]>
Date: Aug 2, 2006 11:10 AM
Subject: Re: [Open-graphics] Re: Setting video mode
To: Patrick McNamara <[EMAIL PROTECTED]>


On 8/2/06, Patrick McNamara <[EMAIL PROTECTED]> wrote:
This is something that will have to be built into the video controller.  
Perhaps opcode 4 should be a set sync mode operation with the bottom eight bits 
being the sync mode bits:

7: reserved
6: reserved
5: reserved
4: reserved
3:  hsync polarity (1 - positive, 0 - negative)
2:  vsync polarity (1 - positive, 0 - negative)
1:  composite sync
0:  sync on green



This might not be a vid controller setting at all.  Rather, it's
probably a configuration of the DAC that tells it how to interpret
composite sync (which we just put out on h and v together or
something).
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