VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, 5, 6, 7, 8, 9, [10] ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 20:21:53 01/06/02 Sun
Author: Phil Q.
Subject: Re: Need code Zenith SSAVI
In reply to: SSAVI 's message, "Need code Zenith SSAVI" on 17:25:31 01/06/02 Sun

Rev7T1b should work for Zenith. I'm not sure if the Rev7T1d versions still have that functionality, it might be disabled. So to be sure, use Rev7T1b. If you're going to use a PIC16F84A, the registers will need to be moved higher in memory (beyond $0C) to accomodate it. You MIGHT be able to compile the b version with the parallax.inc file from Rev7T1D2 which has been changed for the '84A, but I'm not sure and too tired to study it at the moment! If you get compile errors when you try it and you know a little about programming PICS, you should be able to tweak the code around it. If you get it working, let us know!

I remember the old Zenith SSAVI system. Many years ago we had a subscription television service on channels 50 and 54 called SuperTV and they used SSAVI. Back then I built a design called FreeView, there was no microcontroller, so it had 38 chips! It worked really well though, provided proper AGC feedback to the tuner and everything. Looks like Zenith's system is still going strong after all these years.

Good Luck,

- Phil

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

  • Re: Need code Zenith SSAVI -- SSAVI, 12:12:26 01/07/02 Mon
    [ Contact Forum Admin ]

    Forum timezone: GMT-8
    VF Version: 3.00b, ConfDB:
    Before posting please read our privacy policy.
    VoyForums(tm) is a Free Service from Voyager Info-Systems.
    Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.