RE: Reactor sound board dip settings

I just looked at the schems. Have you checked the /IRQ line on the 6502
for activity? I *ASSUME* that the line will only go low when the main
board sends a sound request. If that is the case, you may be able to
isolate whether the problem is on the sound board or getting it to the
sound board.

At 12:53 PM 7/14/2004, Franklin Bowen wrote:
>The power on sound is part of the sound board's self test so that is
>independent of the main board. Although the low voltage is a concern, it
>sounds like your problem is with the main board generating the sound
>signal or getting that signal to your sound board (since you verified the
>board actually works by connecting it to a Q*bert main board).
>
>Have you verified the data path from the final output gates on the main
>board to the input gates on the sound board with a continuity
>check? Could be a harness problem, unless you are using the Q*bert
>harness for Reactor testing.
>
>I would use a logic probe to trace the working signal on your Q*bert from
>end to end and then go through the same thing on Reactor to see if you can
>find a difference.
>
>
>At 03:50 PM 7/13/2004, Joe wrote:
>>Here's what I have going on.. The sound board does not generate sound
>>other than at power on.
>>
>>The main board(s) work fine, as does the sound board in Q*Bert (with
>>reactor roms tested.)
>>
>>The PS is putting out ~5v. On board this makes ~4.3v.
>>
>>Is it possible that there is not enough voltage to send out the proper
>>signals to the sound board? The 74ls377 is fine.
>>
>>Thanks,
>>JB
>>
>>________________________________
>>
>>From: owner-rasterlist@vectorlist.org on behalf of Joe
>>Sent: Tue 7/6/2004 1:21 AM
>>To: rasterlist@vectorlist.org
>>Subject: RASTER: Reactor sound board dip settings
>>
>>
>>
>>Anyone know what the dip switches on reactor are supposed to be set to?
>>
>>I have a working main board here and a working sound board. But, I can't
>>seem to get the working main board to cooperate with the working sound
>>board.. So, just a hunch that it may be dip switches. All the sound
>>tests pass when connected to a working Q*Bert main board.
>>
>>Thanks,
>>JB
>>
>>
>>---------------------------------------------------------------------------
>>** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
>>** Please direct other questions, comments, or problems to chris@westnet.com
>
>--
>Franklin Bowen (Franklin@Bowen.net)
>http://fmbbowen.com:39353
>
>---------------------------------------------------------------------------
>** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
>** Please direct other questions, comments, or problems to chris@westnet.com

--
Franklin Bowen (Franklin@Bowen.net)
http://fmbbowen.com:39353 
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com