True, but can we pass it on to the DAC from the video controller, or do we seperate the sync settings, preferrably including polarity, from the video controller and make it a config register for the DAC that is set at mode switch time? The function call that compiles and uploads the video controller program is also responsible for setting the sync mode register.
Patirck M ----- Original Message ---- From: Timothy Miller <[EMAIL PROTECTED]> To: ogml <[email protected]> Sent: Wednesday, August 2, 2006 10:11:39 AM Subject: Fwd: [Open-graphics] Re: Setting video mode ---------- 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). _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com) _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
