Yep 54 hz, not khz, very poor writing on the print that denotes that.
On 9/22/2015 10:51 AM, Gene Heskett wrote: > On Tuesday 22 September 2015 10:27:51 Rick Lair wrote: > >> Looking at the one print I found for my machine, it looks like Hsync >> 15.87 Khz, and Vsync 54.39 Khz, > I suspect you meant 54.38 Hz. That would be within the reach of an NTSC > monitor. Unfortunately those are limited to those tv's with inputs for > old DVD's and VCR's, neither of which is near sharp enough to do what > you want. That would imply a dot frequency in the 15 megahertz region, > and a GBS8200 video adapter, about 35-40 bucks that the game console > folks use so they can replace the failing CRT's in the coin-op game > consoles with modern but vga only LCD monitors. The inputs on that are > such that the worst adaptation you might have to do is invert the sync. > Almost any TTL inverter can handle that. I don't know how that board > might react to the 5 Hertz diff in vsync frequency though as the only > place I have used one is on my Color Computer 3, whose sync was not 100% > NTSC compatible. Non-interlaced IOW. >> Rick >> >> On 9/22/2015 10:23 AM, Leonardo Marsaglia wrote: >>> 2015-09-22 11:19 GMT-03:00 Rick Lair <r...@superiorroll.com>: >>>> Would something along these lines work? >>>> >>>> >>>> http://www.ebay.com/itm/Brand-NEW-MDA-RGB-CGA-EGA-to-VGA-industrial >>>> -Converter-/250851103017?hash=item3a67e41129 >>> I guess that board woul work ok since it looks a lot better than >>> mine. If you have the CGA frequencies you should have no problems. >>> >>> Mine was the same as this: >>> >>> http://www.ebay.com/itm/NEW-Arcade-game-RGB-CGA-EGA-YUV-to-VGA-HD-vi >>> deo-converter-board-HD9800-GBS8200-/170860805754?hash=item27c818fe7a > > Cheers, Gene Heskett -- Thanks Rick Lair Superior Roll & Turning LLC 399 East Center Street Petersburg MI, 49270 PH: 734-279-1831 FAX: 734-279-1166 www.superiorroll.com ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
