Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!pasteur!ucbvax!decwrl!sun!imagen!atari!portal!cup.portal.com!Sullivan
From: Sullivan@cup.portal.com (sullivan - segall)
Newsgroups: comp.sys.amiga
Subject: Re: AmigaDos VS dhn:
Message-ID: <14632@cup.portal.com>
Date: 14 Feb 89 02:48:13 GMT
References: <88459@sun.uucp> <471@madnix.UUCP>
Distribution: usa
Organization: The Portal System (TM)
Lines: 63

>> I talked to PACIFIC PERIPHS. INC and found out why I was
>> having problems.  The deal is that my 8 MB ASDG board isn't
>> compatible with the P.P. controller and the Fuji disk.  
>
>That is probably correct.
>
What Ryan didn't point out is that the same problem was happenning with
his A2090 and the memory board.  My theory is that there is a little too
much noise on the bus with 8Mb of very fast ram installed.  I doubt that
the ASDG is more at fault than most other boards would be.  Another signature
of the problem is that it gets worse as the two boards are moved closer 
together.  But that's the nice thing about opinions, they're cheap.


>> I'm pretty sure it's something that the ASDG board is doing,
>> but I'm no expert on hardware.  My moniter flickers a lot
>> too (this is the third moniter, and the best of the three)
>> I think this is also some low level interrupts being sent
>> out onto the buss by the memory board.  My understanding
>
>Does that monitor only flicker in INTERLACE? I'm sorry, but that's just one
>of those things which goes along with the amiga's being NTSC compatible.

Nothing so simple unfortunately.  The flicker that he is referring to causes
the entire screen to collapse for about one frame and then reappear.  It may
have been caused by internal arcing, but testing the monitor on my machine, the
problem went away.  So the machine or its configuration is definitely involved.
On the other hand, the problem seems to get worse as the monitor gets older.
That would tend to point to the monitor.  

It is also possible that there are spikes that his power filter (not a UPS, 
just a filter) isn't catching.  But since I lived with him for over a year and
didn't experience the same problems at all, it would have to be a rather 
localized problem.


>There are more expensive monitors which will flicker less in interlace, but
>will smear some with animation. They're called 'long persistance phosphor'

On that subject, you wouldn't happen to know where I could find one?

>This has nothing to do with your hardware problem.

au` contraire.  (maybe)
>
>-- 
>Aaron Avery, ASDG Inc.         "A mime is a terrible thing to waste."
>                                                             -- Robin Williams
>ARPA: madnix!aaron@cs.wisc.edu   {uunet|ncoast}!marque!
>UUCP:   {harvard|rutgers|ucbvax}!uwvax!astroatc!nicmad!madnix!aaron


                           -Sullivan Segall
_____________________________________________________________

/V\  Sully set the example: to fly without moving.  We shall
 '   learn to soar on wings of thought. And the student will
     surpass the teacher.
To Quote the immortal Socrates: "I drank what?" -Sullivan
_____________________________________________________________

Mail to: ...sun!portal!cup.portal.com!Sullivan or
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