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From: jesup@cbmvax.commodore.com (Randell Jesup)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: AmigaVision and amiga voice problem
Message-ID: <20393@cbmvax.commodore.com>
Date: 5 Apr 91 07:59:01 GMT
References: <91094.103331ACPS1072@Ryerson.CA>
Reply-To: jesup@cbmvax.commodore.com (Randell Jesup)
Organization: Commodore, West Chester, PA
Lines: 27

In article <91094.103331ACPS1072@Ryerson.CA> ACPS1072@Ryerson.CA (ACPS1072@RYERSON) writes:
>I am using version 1.53g under 1.3 kickstart on an amiga 2000 with 8 meg
>(one meg out of the nine is being used as a RAD disk).  The problem I'm
>having is when using the Amiga voice when displaying a hi-res (640x400x4bit
>plane) screen.  When previewing the Amiga text typed in the voice sounds fine,
>when runnning it however (the AmigaVision script using 'A.') the Amiga voice
>sounds like it's under water or worse, it crashes my system.

	The problem is that the narrator requires a lot of access to chip
registers and fast interrupt response time to function properly.  With a
high-bandwidth screen, it just can't keep up.  For real fun, try it after
running nofastmem (so the narrator code is in chip mem too) on a 68000.

>  This problem seems to NOT occur under 2.0...  at least in my findings...
>recent version of AV that corrects this problem if it truly is a bug in the
>program?

	If I remember right, the 2.0 narrator is improved in overhead and
quality from the 1.3 version.

-- 
Randell Jesup, Keeper of AmigaDos, Commodore Engineering.
{uunet|rutgers}!cbmvax!jesup, jesup@cbmvax.commodore.com  BIX: rjesup  
Disclaimer: Nothing I say is anything other than my personal opinion.
Thus spake the Master Ninjei: "To program a million-line operating system
is easy, to change a man's temperament is more difficult."
(From "The Zen of Programming")  ;-)