Path: utzoo!yunexus!ists!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!apple!noah From: noah@Apple.COM (Noah Price) Newsgroups: comp.sys.mac.hardware Subject: Re: question about IIci color video connector Summary: Mac IIci connector pinout Keywords: IIci video Message-ID: <36576@apple.Apple.COM> Date: 17 Nov 89 04:46:14 GMT Article-I.D.: apple.36576 References: <1576@esquire.UUCP> <17030@netnews.upenn.edu> Organization: Apple Computer Inc, Cupertino, CA Lines: 42 In article <17030@netnews.upenn.edu> hodas@eniac.seas.upenn.edu.UUCP (Josh Hodas) writes: >As to electrical problems, while the video signals come out the same pins, >the ci also senses the configuration of certain other pins (I think its looking >for a ground configuration, but I forget) in order to detect which type of >monitor is connected. By popular demand, here's the pinout for the Mac IIci DB-15 video connector, and how it connects to the 12" B&W and 13" RGB monitors. Anything that isn't an n.c. (no connection) should be connected. I imagine pin 4 was not connected on your first cable, if the monitor wasn't sensed properly. ------------------------------------------------ Pin Signal Description 12" B&W, 13" RGB ------------------------------------------------ 1 RED.GND Red Video Ground RED.GND 2 RED.VID Red Video RED.VID 3 CSYNC~ Composite Sync CSYNC~ 4 MON.ID1 Monitor ID, Bit 1 ID1.GND 5 GRN.VID Green Video GRN.VID 6 GRN.GND Green Video Ground GRN.GND 7 MON.ID2 Monitor ID, Bit 2 n. c. 8 n. c. (no connection) n. c. 9 BLU.VID Blue Video BLU.VID 10 MON.ID3 Monitor ID, Bit 3 n. c. 11 C&VSYNC.GND CSYNC & VSYNC Gnd. CSYNC.GND 12 VSYNC~ Vertical Sync n. c. 13 BLU.GND Blue Video Ground BLU.GND 14 HSYNC.GND HSYNC Ground n. c. 15 HSYNC~ Horizontal Sync n. c. Shell CHASSIS.GND Chassis Ground CHASSIS.GND Hope this helps. noah ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ noah@apple.com Mac IIci Hardware Design Team ..!{sun,decwrl}!apple!noah Apple Computer, Inc.