home *** CD-ROM | disk | FTP | other *** search
- Path: newsfeed.tip.net!usenet
- From: mats@plea.se (Mats Magnusson)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Genlock Audio help
- Date: 8 Feb 1996 05:39:41 GMT
- Organization: Uniplus Internet Access
- Message-ID: <894.6611T521T243@plea.se>
- References: <4f7ea9$60i@lugb.latrobe.edu.au>
- NNTP-Posting-Host: beatles.plea.se
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
-
- >Can someone give me some info of the timing of the genlock audio bit??
-
- >From what ive found, it is vaid during vblank, but when _precisely_
- >is it valid??, ie, should i sample the line at the rising or falling
- >edge of /VSYNC ??
-
- It is valid under the HSYNC. Just have a look at it with something, a
- osciloscope is best, but a monitor driven by some other near-frequency
- sync-source is also good. Try viewing csync as one rgb-color, and zd as
- oneother, and sync the monitor/tv on a good broadcast, if you don't have a
- osciloscope. Then you'l see what's happening.
-
- >Also, is there a system friendly way of turning this bit on and off??
-
- I think so. But i don't know if the bit is controlled separately of everys
- view/screen, or there is one bit for all screens. It would be nice to have
- it switch on/off genlock, so you could f.ex. be sure that the wb-screen
- never comes 'to broadcast' f.ex.
-
-