Re: Unclaimed Sound Interrupt?

[Grent <grent3@gmail.com>]

On Nov 14, 1:07 am, "ict@ccess" <gids...@sasktel.net> wrote:
> On Nov 13, 10:41 pm, oz390gta <oz390...@gmail.com> wrote:
>
>
>
> > On Nov 14, 1:40 pm, Sheppy <the.she...@gmail.com> wrote:
>
> > > On Nov 13, 9:01 pm, oz390gta <oz390...@gmail.com> wrote:
>
> > > > My vanilla ROM01 IIgs has just started giving me a blue screen with
> > > > the words "Unclaimed sound Interrupt" in flashing letters whenever it
> > > > tries to boot from a mass storage device.
>
> > > There are a few things I recommend trying here:
>
> > > 1. Pull your memory card and use a pencil eraser to gently clean the
> > > contacts on the card's connector. Then wipe it off with a clean cloth
> > > and reinstall it.
>
> > > 2. Give all the socketed chips on the motherboard a gental push to be
> > > sure they're all well seated.
>
> > > 3. Pull the keyboard off, see if starting without it connected works,
> > > then reconnect it.
>
> > > This problem can often happen because of bad RAM or bad contact with
> > > the RAM card, or a poorly seated chip (especially the sound chip up
> > > near the sound connector, but it's happened to me with others).
>
> > > It can also happen when the ADB connection to the keyboard and/or
> > > mouse is bad.
>
> > > Sheppy
>
> > OK, now it gets weird. I have used multiple keyboards, mice and ADB
> > cables so they are not it. I have taken the memory card out so it is
> > not that, checked for any loose chips.
>
> >  It is still happening with the reproducible results below-
>
> > Results with CFFA Card in any slot:
> > -turn on power, boots fine, apple-ctrl-reset at any time after initial
> > power up, crash with "Unclaimed Sound Interrupt" error.
>
> > Results with Focus Card in any slot:
> > -turn on power, freezes on initial "Apple IIgs" boot screen, apple-
> > ctrl-esc (to get to control panel) results in crash with "Unclaimed
> > Sound Interrupt" error.
>
> > Both these a conditions are reproducible every time.
>
> > Any other ideas?
>
> > oz390gta
>
> Unplug all cards and drives.  Start up the computer.  Hit Ctrl-Reset
> to get to the applesoft prompt.  Now press apple-ctrl-esc to get to
> the control panel.  If you can get this far without the error, then
> the motherboard should??? be ok.
>
> Does the error only happen when trying to boot from a CF card or
> microdrive?  What about Prodos8 from a floppy and the card still
> plugged in or unplugged?
>
> What does the self test say?
>
> Do you have a Hyper Studio microphone card that plugs into the row of
> connectors just in front of the RAM slot?  Unplug and try again.
>
> Also checking for loose chips is not the same as removing and re-
> seating chips as they can still be corroded or oxidized and not have a
> good connection.
>
> Rob

I am wondering if a weak power supply might be causing this?