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Re: [Discuss-gnuradio] VGA-based DVB-T modulator
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] VGA-based DVB-T modulator |
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Date: |
Tue, 14 Jun 2005 19:01:11 -0700 |
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User-agent: |
Mutt/1.5.6i |
On Tue, Jun 14, 2005 at 02:36:48AM -0700, John Gilmore wrote:
> > Does anyone here know if the VGA cards prevent you from controlling
> > the DAC durinng the blanking intervals? Are the blanking intervals
> > implemented in hardware or in software?
>
IIRC correctly, on some of the high end video cards (e.g., nVidia)
it's all controlled by microcode running on the custom chips on the
boards. On those cards I think that with suitable inside information
you can control everything.
Eric