Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!cbmvax!cbmehq!cbmger!peterk From: peterk@cbmger.UUCP (Peter Kittel GERMANY) Newsgroups: comp.sys.amiga.hardware Subject: Re: Question about Jumper J36 on Amiga 2000 A motherboard Keywords: Amiga 2000 A, Only Commodore..., Flicker Fixer Message-ID: <1312@cbmger.UUCP> Date: 6 Jun 91 08:40:05 GMT References: Reply-To: peterk@cbmger.UUCP (Peter Kittel GERMANY) Organization: Commodore Bueromaschinen GmbH, West Germany Lines: 21 In article mdullric@faui09.informatik.uni-erlangen.de (Meinhard Ullrich) writes: >I purchased a flicker fixer card (DeInterlace Card from MacroSystem, Germany) >last week and run into some troubles. The handbook reads that in case of such >troubles the user should plug in the jumper 300 in a different way. Well, I >looked not only at the motherboard but in my pockets, my cupboard and on many >more places, too, but I cannot find that damned jumper. The only jumper I found >is called J36 and has only two pins (J300 is said to have 3 pins, so you can >stick it in in two ways). The computer is an Amiga 2000 A (grr), board revision >4. On the A2000A board you change jumper J34 for the flicker fixer card. It switches the Tick signal going into pin 19 of CIA on U10 between the Tick from the power supply and the vertical sync signal VSY. It might be that this is a solder jumper on your board. The jumper J36 serves to tell the system you installed a second internal floppy (then you must shorten it). -- Best regards, Dr. Peter Kittel // E-Mail to \\ Only my personal opinions... Commodore Frankfurt, Germany \X/ {uunet|pyramid|rutgers}!cbmvax!cbmger!peterk