Xref: utzoo comp.sys.amiga.tech:137 comp.sys.amiga:16941
Path: utzoo!mnetor!uunet!cbmvax!grr
From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.sys.amiga.tech,comp.sys.amiga
Subject: Re: PAL and Audio
Message-ID: <3552@cbmvax.UUCP>
Date: 30 Mar 88 06:39:05 GMT
References: <5679@swan.ulowell.edu> <4925@videovax.Tek.COM>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 19

In article <4925@videovax.Tek.COM> stever@videovax.Tek.COM (Steven E. Rice, P.E.) writes:
> In article <5679@swan.ulowell.edu>, Bob Page (page@swan.ulowell.edu) writes:
> 
> >  PAL    3.546895
> >  ---- = -------- = 0.990878
> >  NTSC   3.579545
>   PAL    4.43361875
>   ---- = ---------- = 1.238598
>   NTSC   3.579545

Well, you're both sort of right.  The PAL burst frequency is 4.433 MHz,
however a "PAL" amiga uses a multiple of the 3.546 MHz frequency for
its internal time base, and the 4.433 MHz is generated by frequency
multiplication/division in the composite video or genlock circuitry...

-- 
George Robbins - now working for,	uucp: {uunet|ihnp4|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)