Path: utzoo!utgpu!attcan!uunet!wuarchive!brutus.cs.uiuc.edu!samsung!shadooby!mailrus!bbn!oliveb!tymix!tardis!jms
From: jms@tardis.Tymnet.COM (Joe Smith)
Newsgroups: comp.sys.amiga
Subject: Re: Character generators
Summary: The problem is in the software
Message-ID: <746@tardis.Tymnet.COM>
Date: 4 Nov 89 00:48:04 GMT
References: <1989Oct29.044758.14676@agate.berkeley.edu>
Reply-To: jms@tardis.Tymnet.COM (Joe Smith)
Organization: McDonnell Douglas Field Service Co, San Jose CA
Lines: 30

In article <1989Oct29.044758.14676@agate.berkeley.edu> laba-2ac@web-1a (Robert Gutierrez) writes:
>generators (titling programs), PV-Gold and Broadcast Titler. The problem
>is not the programs, they're excellent, the problem is writing time to Denise.
>Some titles I need to do will last on the screen for 1/2 second (15 video
>frames), and Denise cannot take the next picture (title) in quick enough,

I'm afraid you're blaming the wrong component.  Denise is written to for things
such as changing the color palette (which can be done at over 150,000 changes
per second).  Displaying a new screen involves updating the Copper list, and
well written software can switch screens up to 30 times per second.  That's
assuming that the required frames fit into RAM so that you aren't:
   A) waiting for the next title screen to load from disk, or
   B) waiting for the CPU to create the next screen.

>I still have to use a broadcast character generator until they have a
>faster Denise or the Toaster.

If you are talking about the width of the pixels (35 nanoseconds vs 70 ns)
then the new Denise or Toaster will do it.  But if you are talking about
screens per second, all you need is different software.

>     Robert Gutierrez
>     (from a borrowed acct.)


-- 
Joe Smith (408)922-6220 | SMTP: JMS@F74.TYMNET.COM or jms@gemini.tymnet.com
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