Re: Reactor sound board dip settings

My Reactor main board seems to be quite finicky about it's applied
power. In fact, I'm getting partially garbled background sprites right
now because of it. I'm guessing all your voltages are ok though ;)

tom

Joe wrote:

> Here's where I'm at now..
>
> I plugged in a GV-105 (Krull) sound board I had lying around. Worked great (with Kruill sounds of course.) Hmm, odd. So, I went back to the Reactor sound board, nothing. After messing around for some time, burnt new roms. I made 2 sets, Q*Bert and Reactor. Tried the Rerwactor roms, nothing. Tried the Q*Bert roms, it works! Tried the Reactor roms, nothing. Tried Q*Bert again, works. Hmm.. Burnt a new set of Reactor roms, it works. Turns out the ROMS I was using were too slow. Who'd have guessed.
>
> So, now I have a working board and working sound board that work together! Then the video craps out. Now all the graphics are fine and the gameplay is fine except that the text is garbled as well as the corner chambers. So, off to trouble shoot that. Any ideas are welcome.
>
> JB
>
> ________________________________
>
> From: owner-rasterlist@vectorlist.org on behalf of Franklin Bowen
> Sent: Wed 7/14/2004 4:40 PM
> To: rasterlist@vectorlist.org; rasterlist@vectorlist.org
> Subject: RE: RASTER: 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
>>>
>>>
>>>---------------------------------------------------------------------------
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>>>** Please direct other questions, comments, or problems to chris@westnet.com
>>
>>--
>>Franklin Bowen (Franklin@Bowen.net)
>>http://fmbbowen.com:39353
>>
>>---------------------------------------------------------------------------
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>>** Please direct other questions, comments, or problems to chris@westnet.com
>
>
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Received on Wed Jul 21 18:24:44 2004