H+V Blanking

[Rashid Mustapha]

Hello,

I'm not very advanced with code, so browsing the source probably isn't
going to help my question,
which is more of a technical on for a hardware (thats my bag!) project
I am working on.

Does anyone know if and possibly what needs patching to allow the
vertical and horizontal blanking
periods to be reduced to zero? I am aware of reduced blanking, but I
seem to have to leave at least
one pixel.....old Radeon cards seem to be the kindest - not sure about
newer ones.

I am trying to use the VGA output as a general 8bit DAC, and it works
except the corruption from the
blanking is quite destructive.

Anyone have any thoughts on if this is limited by card firmware, which
might clamp the registers to zeros,
or any other way, or particular cards that this may be possible?

Thank you!

Rash.