On Thu, May 27, 2004 at 02:29:41PM -0400, Greg Stark wrote:
> "Jay R. Ashworth" <[EMAIL PROTECTED]> writes:
> > It's worse than that (, he's dead, Jim).
> > ...
> > But the card has to be designed for SoG, or you need to build an
> > external 5-to-3 adapter, which isn't guaranteed to work well.
> 
> Really? Browsing the source I see tons of mentions of SyncOnGreen including
> registers specifically for that. The MGA driver in particular seems to do
> *something* when you say SyncOnGreen.
> 
> You're saying no standard PC card has SyncOnGreen as an option?

It was my understanding when I last researched this that very few VGA
adapters had the hardware support to combine the H and V sync signals
on the Green channel's output, yes.  That was why SI87 and the other
guys (whose name eludes me for the moment) made so much money.

MGA were, IIRC, one of the few who did it right, but their cards were
all as expensive as the specialty ones, at the time (1995ish).

Cheers,
-- jra
-- 
Jay R. Ashworth                                                [EMAIL PROTECTED]
Member of the Technical Staff     Baylink                             RFC 2100
The Suncoast Freenet         The Things I Think
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        "They had engineers in my day, too."  -- Perry Vance Nelson
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