Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!van-bc!ubc-cs!alberta!mts.ucs.UAlberta.CA!Dale_A._Ulan From: userNQNF@mts.ucs.UAlberta.CA (Dale A. Ulan) Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: 15->9 pin monitor hookup... Message-ID: <1916@mts.ucs.UAlberta.CA> Date: 13 Nov 90 02:32:05 GMT References: <118@malta.sbi.com> <90310.124801KDM101@psuvm.psu.edu> Organization: MTS Univ of Alberta Lines: 55 >In article , root@scona (Corey Wirun) writes: >> >> .... I'm going to try out an ATI VGA Wonder card. I am assuming >> it's got a 15-pin output. So, if there is a digital/analog switch on >> the monitor, what am I losing by getting a 15->9 pin adapter? Is this Here's what I get from my adapter going the other way: 15-pin VGA PGC EGA 9-pin 1 Red Red Gnd 1 2 Green Grn SecRed 2 3 Blue Blu PriRed 3 13 HSync Sync PriGrn 4 14 VSync N/C PriBlu 5 5 Gnd RGnd SecGrn 6 15 N/C GGnd SecBlu 7 12 N/C BGnd HSync 8 10 Gnd Gnd VSync 9 This adapts an EGA/CGA or some 9-pin VGA to an NEC 3D. I would check the pinouts in the monitor manual and match them up with those in the ATI manual. It seems as though my monitor is doing some internal switching, given the different pinouts for PGC,EGA, and CGA. If your monitor used to work with EGA, match up the EGA pins (Hsync, VSync, colours, grounds) to what the VGA card is spitting out. In that case, it looks like these pins should be wired together... 15 pin 9 pin 15 pin 9 pin 1 to 3 10 to 1 2 to 4 13 to 8 3 to 5 14 to 9 I would check the signals out with an oscilloscope before hooking up the beast, just to avoid smoke, if available. The ATI VGA Wonder determines what monitor is hooked up by software (the later ones, anyway), so it is rather critical that there be a monitor hooked up and turned on prior to powerup. This also doesn't allow you to switch monitors mid-session... lest the card begin to emit nasty odors. (or the monitor). This makes a bought adapter sound nicer. I'd hook my monitor up using my wiring suggestions, but I'm not necessarily recommending that you do likewise. If your monitor smokes, remember, I warned you. Chances are it won't- you probably won't get a picture if it isn't hooked up right. You may want to use 50 or 330 ohm resistors in line, so if it doesn't work, it won't smoke. When it works, remove the resistors and make the connections straight. Enjoy the high-res modes of that ATI card- it's a good little unit. The extra 256K of RAM (to bring it up to 512K) is well worth it, it enables 1024x768/16 , 640x480/256, and 800x600/256. ------------------------------------------------------- Disclaimer--- the above is only what I got out of my manuals. If I blow my monitor, that's my problem, if you blow yours, that's NOT my problem.