Path: utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!usc!venera.isi.edu!schur From: schur@venera.isi.edu (Sean Schur) Newsgroups: comp.sys.amiga Subject: COMMODORE PLEASE READ Re: A3000 and a genlock Keywords: A3000 genlock A2300 Message-ID: <14298@venera.isi.edu> Date: 15 Jul 90 20:32:28 GMT References: <19027@well.sf.ca.us> Reply-To: schur@venera.isi.edu (Sean Schur) Distribution: comp Organization: Information Sciences Institute, Univ. of So. California Lines: 63 I would appreciate it if someone at Commodore (or equally knowledgable) will address this issue. I have sent messages about this problem and have seen at least 4 others with the same problem. The problem is using a genlock with a 3000/1950 combination. I am having the problem with a Progen genlock, I have read inquiries here about the same problem with Supergen, Scanlock and Commodore's own 2300 (see below). With the genlock plugged into the 23 pin video out the 1950 is unviewable. This is true with the monitor plugged into either the throughput of the genlock (essentially plugging it into the 23 pin slot) or with the genlock still in the 23 pin slot and the monitor in the VGA out. The machine boots with the genlock plugged in put the monitor picture turns a dark grey and vertically flips VERY fast and is not fixable by monitor adjustments. However, in this situation the genlocked video output is fine and usable. Unfortunately for me my video system and it's monitor are across the room so it is not possible to operate the computer by watching that monitor. Now on the other hand, if I plug the genlock in AFTER booting (I know, very dangerous) the 1950 display looks mostly normal, it is readable although not completely stable it smears horizontally a bit. However at this point the genlock output is out of sync. It's picture is stable but the horizontal black bar which you shouldn't see from the top of the screen is somewhere other than where it is supposed to be, leaving the genlocked output off-center vertically. I can use the system this way because if I pause my video input (assuming I am using a VCR) I can get the bar to roll vertically and if I release the pause at just the right time I can get the bar off the top. But this is obviously a kludge at best. I did read the manual and am aware that you need to disable the VDE, so that isn't the problem. I can't vouch for people with other genlocks. But the messages I have read do describe very similar problems (see the message below about a 2300). I would appreciate it if someone could address this problem as it seems to be pretty common from what I can tell. ============================================================================== \ / \ \ / / Sean Schur \ \ / / \ \/ / USENET: schur@isi.edu \ /a\mpyr/ Compuserve: 70731,1102 \/ \ / ideo Plink: OSS259 \/ ============================================================================== In article <19027@well.sf.ca.us> sjm@well.sf.ca.us (Stephen Moehle) writes: >I have an A3000 with a 1950 monitor. I am using 2.0 (Kickstart version 36.141 >Workbench version 36.68). I also have a Commodore A2300 internal genlock >which I cannot get to work with the VDE. When I put the genlock in, the 1950 >cannot sync up to the signal coming out of the 3000. With the VDE on, the 1950 >looks like the vertical hold is off, but adjusting the vertical hold on the >monitor does not help. Turning the VDE off makes things worse. The monitor >does not display anything recognizable, but it looks just like what is coming >out of the 23 pin port. However, when I plug the monitor into the 23 pin >port on the genlock, the display is fine. Help! How can I get this to work? >Thanks. > >Stephe >sjm@well.sf.ca.us or {ucbvax,pacbell,hplabs}!well!sjm >"You heard the weirdo man. What is truth?"