rps@dtseng.UUCP (Robert P. Scott) (11/16/89)
I'd like to drive an RGB monitor which expects sync signals on the green video line with a standard VGA card. Has anyone out there tried to do this? I have no VGA specs, but I've heard that the H and V sync signals from the card are TTL levels. To further complicate things I've heard that one or both of the signals are inverted to help multisync monitors? Is this the case? Assuming the monitor is AC coupled I figured I could just use a few resistors to combine the syncs and green. But can I prevent (in software, hardware would work but I would prefer a passive cable...) the sync sense from being mucked with? Please e-mail responses to ...!decvax!dtseng!rps as I rarely have time to read news. I'll summarize and post my results. Thanks, Robert -- D T S Engineering | Robert P. Scott P. O. Box 277 | ...!decvax!dtseng!rps -- ...!harvard!zinn!dtseng!rps Hudson, NH 03051-0277 | (603)886-1382 |